342413 – Plasma Shell crashed while unplugging external monitor

Bug 342413 - Plasma Shell crashed while unplugging external monitor

Summary: Plasma Shell crashed while unplugging external monitor

Status:	RESOLVED FIXED

Alias:	None

Product:	plasmashell
Classification:	Plasma
Component:	general (show other bugs)
Version:	5.1.1
Platform:	unspecified Linux

Importance:	NOR crash
Target Milestone:	1.0
Assignee:	David Edmundson

URL:
Keywords:	drkonqi

Duplicates (1):	343339 (view as bug list)
Depends on:
Blocks:

Reported:	2015-01-02 13:12 UTC by Niklas
Modified:	2015-02-03 08:53 UTC (History)
CC List:	6 users (show)

See Also:
Latest Commit:
Version Fixed In:

Attachments
backtrace with debug symbols for plasmashell (32.55 KB, text/plain) 2015-01-31 15:44 UTC, R.Harish Navnit	Details
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Description Niklas 2015-01-02 13:12:23 UTC

Application: plasmashell ()

Qt Version: 5.4.0
Operating System: Linux 3.17.7-300.fc21.x86_64 x86_64
Distribution: "Fedora release 21 (Twenty One)"

-- Information about the crash:
- What I was doing when the application crashed:
Removing my vga monitor from my lenovo x220. The same does happen when I plug the monitor in. 

- Unusual behavior I noticed:
In this specific case first both screen went black. After  a short time the smaller internal display (1366x768) was mirrored on the bigger external one (1680x1050). The remaining pixels on the external screen show diverse graphical artefacts.
Sometimes plasma is able to start again automatically. Not this time.

The crash can be reproduced every time.

-- Backtrace:
Application: plasmashell (plasmashell), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
[Current thread is 1 (Thread 0x7fbabb94e900 (LWP 4324))]

Thread 38 (Thread 0x7fbab3802700 (LWP 4327)):
#0  0x00007fbac9b3f1dd in poll () at /lib64/libc.so.6
#1  0x00007fbacd020182 in _xcb_conn_wait () at /lib64/libxcb.so.1
#2  0x00007fbacd021cff in xcb_wait_for_event () at /lib64/libxcb.so.1
#3  0x00007fbab5349959 in QXcbEventReader::run() () at /usr/lib64/qt5/plugins/platforms/libqxcb.so
#4  0x00007fbaca6d84ce in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#5  0x00007fbac983552a in start_thread () at /lib64/libpthread.so.0
#6  0x00007fbac9b4a77d in clone () at /lib64/libc.so.6

Thread 37 (Thread 0x7fbab25e2700 (LWP 4333)):
#0  0x00007fff47184a89 in clock_gettime ()
#1  0x00007fbac9b589fd in clock_gettime () at /lib64/libc.so.6
#2  0x00007fbaca78d026 in qt_gettime() () at /lib64/libQt5Core.so.5
#3  0x00007fbaca918219 in QTimerInfoList::updateCurrentTime() () at /lib64/libQt5Core.so.5
#4  0x00007fbaca918785 in QTimerInfoList::timerWait(timespec&) () at /lib64/libQt5Core.so.5
#5  0x00007fbaca919b5e in timerSourcePrepare(_GSource*, int*) () at /lib64/libQt5Core.so.5
#6  0x00007fbac576f3ed in g_main_context_prepare () at /lib64/libglib-2.0.so.0
#7  0x00007fbac576fd4b in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#8  0x00007fbac576ff3c in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#9  0x00007fbaca91a73c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#10 0x00007fbaca8c0d42 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#11 0x00007fbaca6d36f4 in QThread::exec() () at /lib64/libQt5Core.so.5
#12 0x00007fbacceb6275 in QQmlThreadPrivate::run() () at /lib64/libQt5Qml.so.5
#13 0x00007fbaca6d84ce in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#14 0x00007fbac983552a in start_thread () at /lib64/libpthread.so.0
#15 0x00007fbac9b4a77d in clone () at /lib64/libc.so.6

Thread 36 (Thread 0x7fbaaa009700 (LWP 4340)):
#0  0x00007fbac9b3f1dd in poll () at /lib64/libc.so.6
#1  0x00007fbac576fe24 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#2  0x00007fbac576ff3c in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#3  0x00007fbaca91a73c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#4  0x00007fbaca8c0d42 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#5  0x00007fbaca6d36f4 in QThread::exec() () at /lib64/libQt5Core.so.5
#6  0x00007fbacceb6275 in QQmlThreadPrivate::run() () at /lib64/libQt5Qml.so.5
#7  0x00007fbaca6d84ce in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#8  0x00007fbac983552a in start_thread () at /lib64/libpthread.so.0
#9  0x00007fbac9b4a77d in clone () at /lib64/libc.so.6

Thread 35 (Thread 0x7fba9f7fe700 (LWP 4344)):
#0  0x00007fbac9b3f1dd in poll () at /lib64/libc.so.6
#1  0x00007fbac576fe24 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#2  0x00007fbac576ff3c in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#3  0x00007fbaca91a73c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#4  0x00007fbaca8c0d42 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#5  0x00007fbaca6d36f4 in QThread::exec() () at /lib64/libQt5Core.so.5
#6  0x00007fbacceb6275 in QQmlThreadPrivate::run() () at /lib64/libQt5Qml.so.5
#7  0x00007fbaca6d84ce in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#8  0x00007fbac983552a in start_thread () at /lib64/libpthread.so.0
#9  0x00007fbac9b4a77d in clone () at /lib64/libc.so.6

Thread 34 (Thread 0x7fba9e7fd700 (LWP 4345)):
#0  0x00007fff47184ba6 in clock_gettime ()
#1  0x00007fbac9b589fd in clock_gettime () at /lib64/libc.so.6
#2  0x00007fbaca78d026 in qt_gettime() () at /lib64/libQt5Core.so.5
#3  0x00007fbaca918219 in QTimerInfoList::updateCurrentTime() () at /lib64/libQt5Core.so.5
#4  0x00007fbaca918785 in QTimerInfoList::timerWait(timespec&) () at /lib64/libQt5Core.so.5
#5  0x00007fbaca919b5e in timerSourcePrepare(_GSource*, int*) () at /lib64/libQt5Core.so.5
#6  0x00007fbac576f3ed in g_main_context_prepare () at /lib64/libglib-2.0.so.0
#7  0x00007fbac576fd4b in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#8  0x00007fbac576ff3c in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#9  0x00007fbaca91a73c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#10 0x00007fbaca8c0d42 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#11 0x00007fbaca6d36f4 in QThread::exec() () at /lib64/libQt5Core.so.5
#12 0x00007fbacceb6275 in QQmlThreadPrivate::run() () at /lib64/libQt5Qml.so.5
#13 0x00007fbaca6d84ce in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#14 0x00007fbac983552a in start_thread () at /lib64/libpthread.so.0
#15 0x00007fbac9b4a77d in clone () at /lib64/libc.so.6

Thread 33 (Thread 0x7fba9d7fc700 (LWP 4346)):
#0  0x00007fbac576ce70 in g_source_iter_next () at /lib64/libglib-2.0.so.0
#1  0x00007fbac576f78b in g_main_context_check () at /lib64/libglib-2.0.so.0
#2  0x00007fbac576fdc3 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#3  0x00007fbac576ff3c in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#4  0x00007fbaca91a73c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#5  0x00007fbaca8c0d42 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#6  0x00007fbaca6d36f4 in QThread::exec() () at /lib64/libQt5Core.so.5
#7  0x00007fbacceb6275 in QQmlThreadPrivate::run() () at /lib64/libQt5Qml.so.5
#8  0x00007fbaca6d84ce in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#9  0x00007fbac983552a in start_thread () at /lib64/libpthread.so.0
#10 0x00007fbac9b4a77d in clone () at /lib64/libc.so.6

Thread 32 (Thread 0x7fba8ffff700 (LWP 4347)):
#0  0x00007fbac57b41e4 in g_mutex_unlock () at /lib64/libglib-2.0.so.0
#1  0x00007fbac576fe19 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#2  0x00007fbac576ff3c in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#3  0x00007fbaca91a73c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#4  0x00007fbaca8c0d42 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#5  0x00007fbaca6d36f4 in QThread::exec() () at /lib64/libQt5Core.so.5
#6  0x00007fbacceb6275 in QQmlThreadPrivate::run() () at /lib64/libQt5Qml.so.5
#7  0x00007fbaca6d84ce in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#8  0x00007fbac983552a in start_thread () at /lib64/libpthread.so.0
#9  0x00007fbac9b4a77d in clone () at /lib64/libc.so.6

Thread 31 (Thread 0x7fba8effe700 (LWP 4348)):
#0  0x00007fbac57b41c9 in g_mutex_lock () at /lib64/libglib-2.0.so.0
#1  0x00007fbac576f9b6 in g_main_context_dispatch () at /lib64/libglib-2.0.so.0
#2  0x00007fbac576fe88 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#3  0x00007fbac576ff3c in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#4  0x00007fbaca91a73c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#5  0x00007fbaca8c0d42 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#6  0x00007fbaca6d36f4 in QThread::exec() () at /lib64/libQt5Core.so.5
#7  0x00007fbacceb6275 in QQmlThreadPrivate::run() () at /lib64/libQt5Qml.so.5
#8  0x00007fbaca6d84ce in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#9  0x00007fbac983552a in start_thread () at /lib64/libpthread.so.0
#10 0x00007fbac9b4a77d in clone () at /lib64/libc.so.6

Thread 30 (Thread 0x7fba8dffd700 (LWP 4349)):
#0  0x00007fbac9b3f1dd in poll () at /lib64/libc.so.6
#1  0x00007fbac576fe24 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#2  0x00007fbac576ff3c in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#3  0x00007fbaca91a73c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#4  0x00007fbaca8c0d42 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#5  0x00007fbaca6d36f4 in QThread::exec() () at /lib64/libQt5Core.so.5
#6  0x00007fbacceb6275 in QQmlThreadPrivate::run() () at /lib64/libQt5Qml.so.5
#7  0x00007fbaca6d84ce in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#8  0x00007fbac983552a in start_thread () at /lib64/libpthread.so.0
#9  0x00007fbac9b4a77d in clone () at /lib64/libc.so.6

Thread 29 (Thread 0x7fba8cdf4700 (LWP 4350)):
#0  0x00007fbac576f480 in g_main_context_prepare () at /lib64/libglib-2.0.so.0
#1  0x00007fbac576fd4b in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#2  0x00007fbac576ff3c in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#3  0x00007fbaca91a73c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#4  0x00007fbaca8c0d42 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#5  0x00007fbaca6d36f4 in QThread::exec() () at /lib64/libQt5Core.so.5
#6  0x00007fbacceb6275 in QQmlThreadPrivate::run() () at /lib64/libQt5Qml.so.5
#7  0x00007fbaca6d84ce in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#8  0x00007fbac983552a in start_thread () at /lib64/libpthread.so.0
#9  0x00007fbac9b4a77d in clone () at /lib64/libc.so.6

Thread 28 (Thread 0x7fba7b7ff700 (LWP 4351)):
#0  0x00007fbac57b41e4 in g_mutex_unlock () at /lib64/libglib-2.0.so.0
#1  0x00007fbac576fccd in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#2  0x00007fbac576ff3c in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#3  0x00007fbaca91a73c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#4  0x00007fbaca8c0d42 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#5  0x00007fbaca6d36f4 in QThread::exec() () at /lib64/libQt5Core.so.5
#6  0x00007fbacceb6275 in QQmlThreadPrivate::run() () at /lib64/libQt5Qml.so.5
#7  0x00007fbaca6d84ce in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#8  0x00007fbac983552a in start_thread () at /lib64/libpthread.so.0
#9  0x00007fbac9b4a77d in clone () at /lib64/libc.so.6

Thread 27 (Thread 0x7fba7a7fe700 (LWP 4353)):
#0  0x00007fbac9b3f1dd in poll () at /lib64/libc.so.6
#1  0x00007fbac576fe24 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#2  0x00007fbac576ff3c in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#3  0x00007fbaca91a73c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#4  0x00007fbaca8c0d42 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#5  0x00007fbaca6d36f4 in QThread::exec() () at /lib64/libQt5Core.so.5
#6  0x00007fbacceb6275 in QQmlThreadPrivate::run() () at /lib64/libQt5Qml.so.5
#7  0x00007fbaca6d84ce in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#8  0x00007fbac983552a in start_thread () at /lib64/libpthread.so.0
#9  0x00007fbac9b4a77d in clone () at /lib64/libc.so.6

Thread 26 (Thread 0x7fba797fd700 (LWP 4354)):
#0  0x00007fbac9b582df in __libc_enable_asynccancel () at /lib64/libc.so.6
#1  0x00007fbac9b3f1d2 in poll () at /lib64/libc.so.6
#2  0x00007fbac576fe24 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#3  0x00007fbac576ff3c in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#4  0x00007fbaca91a73c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#5  0x00007fbaca8c0d42 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#6  0x00007fbaca6d36f4 in QThread::exec() () at /lib64/libQt5Core.so.5
#7  0x00007fbacceb6275 in QQmlThreadPrivate::run() () at /lib64/libQt5Qml.so.5
#8  0x00007fbaca6d84ce in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#9  0x00007fbac983552a in start_thread () at /lib64/libpthread.so.0
#10 0x00007fbac9b4a77d in clone () at /lib64/libc.so.6

Thread 25 (Thread 0x7fba67fff700 (LWP 4355)):
#0  0x00007fbac576f434 in g_main_context_prepare () at /lib64/libglib-2.0.so.0
#1  0x00007fbac576fd4b in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#2  0x00007fbac576ff3c in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#3  0x00007fbaca91a73c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#4  0x00007fbaca8c0d42 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#5  0x00007fbaca6d36f4 in QThread::exec() () at /lib64/libQt5Core.so.5
#6  0x00007fbacceb6275 in QQmlThreadPrivate::run() () at /lib64/libQt5Qml.so.5
#7  0x00007fbaca6d84ce in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#8  0x00007fbac983552a in start_thread () at /lib64/libpthread.so.0
#9  0x00007fbac9b4a77d in clone () at /lib64/libc.so.6

Thread 24 (Thread 0x7fba66ffe700 (LWP 4356)):
#0  0x00007fbac576f8a0 in g_main_context_check () at /lib64/libglib-2.0.so.0
#1  0x00007fbac576fdc3 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#2  0x00007fbac576ff3c in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#3  0x00007fbaca91a73c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#4  0x00007fbaca8c0d42 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#5  0x00007fbaca6d36f4 in QThread::exec() () at /lib64/libQt5Core.so.5
#6  0x00007fbacceb6275 in QQmlThreadPrivate::run() () at /lib64/libQt5Qml.so.5
#7  0x00007fbaca6d84ce in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#8  0x00007fbac983552a in start_thread () at /lib64/libpthread.so.0
#9  0x00007fbac9b4a77d in clone () at /lib64/libc.so.6

Thread 23 (Thread 0x7fba65ffd700 (LWP 4357)):
#0  0x00007fbac57b41c9 in g_mutex_lock () at /lib64/libglib-2.0.so.0
#1  0x00007fbac576fe0a in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#2  0x00007fbac576ff3c in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#3  0x00007fbaca91a73c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#4  0x00007fbaca8c0d42 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#5  0x00007fbaca6d36f4 in QThread::exec() () at /lib64/libQt5Core.so.5
#6  0x00007fbacceb6275 in QQmlThreadPrivate::run() () at /lib64/libQt5Qml.so.5
#7  0x00007fbaca6d84ce in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#8  0x00007fbac983552a in start_thread () at /lib64/libpthread.so.0
#9  0x00007fbac9b4a77d in clone () at /lib64/libc.so.6

Thread 22 (Thread 0x7fba64ffc700 (LWP 4358)):
#0  0x00007fbac983a590 in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007fbacf247794 in QTWTF::TCMalloc_PageHeap::scavengerThread() () at /lib64/libQt5Script.so.5
#2  0x00007fbacf2477d9 in  () at /lib64/libQt5Script.so.5
#3  0x00007fbac983552a in start_thread () at /lib64/libpthread.so.0
#4  0x00007fbac9b4a77d in clone () at /lib64/libc.so.6

Thread 21 (Thread 0x7fb9d7fff700 (LWP 4360)):
#0  0x00007fbac57b41c9 in g_mutex_lock () at /lib64/libglib-2.0.so.0
#1  0x00007fbac576fe0a in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#2  0x00007fbac576ff3c in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#3  0x00007fbaca91a73c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#4  0x00007fbaca8c0d42 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#5  0x00007fbaca6d36f4 in QThread::exec() () at /lib64/libQt5Core.so.5
#6  0x00007fbacceb6275 in QQmlThreadPrivate::run() () at /lib64/libQt5Qml.so.5
#7  0x00007fbaca6d84ce in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#8  0x00007fbac983552a in start_thread () at /lib64/libpthread.so.0
#9  0x00007fbac9b4a77d in clone () at /lib64/libc.so.6

Thread 20 (Thread 0x7fb9d6ffe700 (LWP 4361)):
#0  0x00007fbac57b41c9 in g_mutex_lock () at /lib64/libglib-2.0.so.0
#1  0x00007fbac576f84c in g_main_context_check () at /lib64/libglib-2.0.so.0
#2  0x00007fbac576fdc3 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#3  0x00007fbac576ff3c in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#4  0x00007fbaca91a73c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#5  0x00007fbaca8c0d42 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#6  0x00007fbaca6d36f4 in QThread::exec() () at /lib64/libQt5Core.so.5
#7  0x00007fbacceb6275 in QQmlThreadPrivate::run() () at /lib64/libQt5Qml.so.5
#8  0x00007fbaca6d84ce in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#9  0x00007fbac983552a in start_thread () at /lib64/libpthread.so.0
#10 0x00007fbac9b4a77d in clone () at /lib64/libc.so.6

Thread 19 (Thread 0x7fb9d5df7700 (LWP 4362)):
#0  0x00007fbac57b41e4 in g_mutex_unlock () at /lib64/libglib-2.0.so.0
#1  0x00007fbac576fe19 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#2  0x00007fbac576ff3c in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#3  0x00007fbaca91a73c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#4  0x00007fbaca8c0d42 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#5  0x00007fbaca6d36f4 in QThread::exec() () at /lib64/libQt5Core.so.5
#6  0x00007fbad0160286 in QQuickPixmapReader::run() () at /lib64/libQt5Quick.so.5
#7  0x00007fbaca6d84ce in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#8  0x00007fbac983552a in start_thread () at /lib64/libpthread.so.0
#9  0x00007fbac9b4a77d in clone () at /lib64/libc.so.6

Thread 18 (Thread 0x7fb9d4df6700 (LWP 4363)):
#0  0x00007fbac57b41e4 in g_mutex_unlock () at /lib64/libglib-2.0.so.0
#1  0x00007fbac576f7f2 in g_main_context_check () at /lib64/libglib-2.0.so.0
#2  0x00007fbac576fdc3 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#3  0x00007fbac576ff3c in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#4  0x00007fbaca91a73c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#5  0x00007fbaca8c0d42 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#6  0x00007fbaca6d36f4 in QThread::exec() () at /lib64/libQt5Core.so.5
#7  0x00007fbacceb6275 in QQmlThreadPrivate::run() () at /lib64/libQt5Qml.so.5
#8  0x00007fbaca6d84ce in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#9  0x00007fbac983552a in start_thread () at /lib64/libpthread.so.0
#10 0x00007fbac9b4a77d in clone () at /lib64/libc.so.6

Thread 17 (Thread 0x7fb9c5364700 (LWP 4364)):
#0  0x00007fbac9b3f1dd in poll () at /lib64/libc.so.6
#1  0x00007fbac576fe24 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#2  0x00007fbac576ff3c in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#3  0x00007fbaca91a73c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#4  0x00007fbaca8c0d42 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#5  0x00007fbaca6d36f4 in QThread::exec() () at /lib64/libQt5Core.so.5
#6  0x00007fbacceb6275 in QQmlThreadPrivate::run() () at /lib64/libQt5Qml.so.5
#7  0x00007fbaca6d84ce in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#8  0x00007fbac983552a in start_thread () at /lib64/libpthread.so.0
#9  0x00007fbac9b4a77d in clone () at /lib64/libc.so.6

Thread 16 (Thread 0x7fb9bbb01700 (LWP 4365)):
#0  0x00007fbac9b3f1dd in poll () at /lib64/libc.so.6
#1  0x00007fbac576fe24 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#2  0x00007fbac576ff3c in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#3  0x00007fbaca91a73c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#4  0x00007fbaca8c0d42 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#5  0x00007fbaca6d36f4 in QThread::exec() () at /lib64/libQt5Core.so.5
#6  0x00007fbacceb6275 in QQmlThreadPrivate::run() () at /lib64/libQt5Qml.so.5
#7  0x00007fbaca6d84ce in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#8  0x00007fbac983552a in start_thread () at /lib64/libpthread.so.0
#9  0x00007fbac9b4a77d in clone () at /lib64/libc.so.6

Thread 15 (Thread 0x7fb9baa0e700 (LWP 4366)):
#0  0x00007fbac9b3f1dd in poll () at /lib64/libc.so.6
#1  0x00007fbac576fe24 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#2  0x00007fbac576ff3c in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#3  0x00007fbaca91a73c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#4  0x00007fbaca8c0d42 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#5  0x00007fbaca6d36f4 in QThread::exec() () at /lib64/libQt5Core.so.5
#6  0x00007fbacceb6275 in QQmlThreadPrivate::run() () at /lib64/libQt5Qml.so.5
#7  0x00007fbaca6d84ce in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#8  0x00007fbac983552a in start_thread () at /lib64/libpthread.so.0
#9  0x00007fbac9b4a77d in clone () at /lib64/libc.so.6

Thread 14 (Thread 0x7fb9b991b700 (LWP 4367)):
#0  0x00007fbac9b582df in __libc_enable_asynccancel () at /lib64/libc.so.6
#1  0x00007fbac9b3ae42 in read () at /lib64/libc.so.6
#2  0x00007fbac57b2d30 in g_wakeup_acknowledge () at /lib64/libglib-2.0.so.0
#3  0x00007fbac576f8ec in g_main_context_check () at /lib64/libglib-2.0.so.0
#4  0x00007fbac576fdc3 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#5  0x00007fbac576ff3c in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#6  0x00007fbaca91a73c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#7  0x00007fbaca8c0d42 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#8  0x00007fbaca6d36f4 in QThread::exec() () at /lib64/libQt5Core.so.5
#9  0x00007fbacceb6275 in QQmlThreadPrivate::run() () at /lib64/libQt5Qml.so.5
#10 0x00007fbaca6d84ce in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#11 0x00007fbac983552a in start_thread () at /lib64/libpthread.so.0
#12 0x00007fbac9b4a77d in clone () at /lib64/libc.so.6

Thread 13 (Thread 0x7fb9b8828700 (LWP 4368)):
#0  0x00007fbac57b41c9 in g_mutex_lock () at /lib64/libglib-2.0.so.0
#1  0x00007fbac576fe0a in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#2  0x00007fbac576ff3c in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#3  0x00007fbaca91a73c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#4  0x00007fbaca8c0d42 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#5  0x00007fbaca6d36f4 in QThread::exec() () at /lib64/libQt5Core.so.5
#6  0x00007fbacceb6275 in QQmlThreadPrivate::run() () at /lib64/libQt5Qml.so.5
#7  0x00007fbaca6d84ce in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#8  0x00007fbac983552a in start_thread () at /lib64/libpthread.so.0
#9  0x00007fbac9b4a77d in clone () at /lib64/libc.so.6

Thread 12 (Thread 0x7fb9ab6ef700 (LWP 4369)):
#0  0x00007fbac57b41c9 in g_mutex_lock () at /lib64/libglib-2.0.so.0
#1  0x00007fbac576edd0 in g_main_context_acquire () at /lib64/libglib-2.0.so.0
#2  0x00007fbac576fcd5 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#3  0x00007fbac576ff3c in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#4  0x00007fbaca91a73c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#5  0x00007fbaca8c0d42 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#6  0x00007fbaca6d36f4 in QThread::exec() () at /lib64/libQt5Core.so.5
#7  0x00007fbacceb6275 in QQmlThreadPrivate::run() () at /lib64/libQt5Qml.so.5
#8  0x00007fbaca6d84ce in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#9  0x00007fbac983552a in start_thread () at /lib64/libpthread.so.0
#10 0x00007fbac9b4a77d in clone () at /lib64/libc.so.6

Thread 11 (Thread 0x7fb9aa5fe700 (LWP 4370)):
#0  0x00007fbac9b3f1dd in poll () at /lib64/libc.so.6
#1  0x00007fbac576fe24 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#2  0x00007fbac576ff3c in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#3  0x00007fbaca91a73c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#4  0x00007fbaca8c0d42 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#5  0x00007fbaca6d36f4 in QThread::exec() () at /lib64/libQt5Core.so.5
#6  0x00007fbacceb6275 in QQmlThreadPrivate::run() () at /lib64/libQt5Qml.so.5
#7  0x00007fbaca6d84ce in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#8  0x00007fbac983552a in start_thread () at /lib64/libpthread.so.0
#9  0x00007fbac9b4a77d in clone () at /lib64/libc.so.6

Thread 10 (Thread 0x7fb9a950d700 (LWP 4371)):
#0  0x00007fbac576cea5 in g_source_iter_next () at /lib64/libglib-2.0.so.0
#1  0x00007fbac576f38b in g_main_context_prepare () at /lib64/libglib-2.0.so.0
#2  0x00007fbac576fd4b in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#3  0x00007fbac576ff3c in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#4  0x00007fbaca91a73c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#5  0x00007fbaca8c0d42 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#6  0x00007fbaca6d36f4 in QThread::exec() () at /lib64/libQt5Core.so.5
#7  0x00007fbacceb6275 in QQmlThreadPrivate::run() () at /lib64/libQt5Qml.so.5
#8  0x00007fbaca6d84ce in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#9  0x00007fbac983552a in start_thread () at /lib64/libpthread.so.0
#10 0x00007fbac9b4a77d in clone () at /lib64/libc.so.6

Thread 9 (Thread 0x7fb997fff700 (LWP 4372)):
#0  0x00007fff47184ba6 in clock_gettime ()
#1  0x00007fbac9b589fd in clock_gettime () at /lib64/libc.so.6
#2  0x00007fbaca78d026 in qt_gettime() () at /lib64/libQt5Core.so.5
#3  0x00007fbaca918219 in QTimerInfoList::updateCurrentTime() () at /lib64/libQt5Core.so.5
#4  0x00007fbaca918785 in QTimerInfoList::timerWait(timespec&) () at /lib64/libQt5Core.so.5
#5  0x00007fbaca919b5e in timerSourcePrepare(_GSource*, int*) () at /lib64/libQt5Core.so.5
#6  0x00007fbac576f3ed in g_main_context_prepare () at /lib64/libglib-2.0.so.0
#7  0x00007fbac576fd4b in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#8  0x00007fbac576ff3c in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#9  0x00007fbaca91a73c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#10 0x00007fbaca8c0d42 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#11 0x00007fbaca6d36f4 in QThread::exec() () at /lib64/libQt5Core.so.5
#12 0x00007fbacceb6275 in QQmlThreadPrivate::run() () at /lib64/libQt5Qml.so.5
#13 0x00007fbaca6d84ce in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#14 0x00007fbac983552a in start_thread () at /lib64/libpthread.so.0
#15 0x00007fbac9b4a77d in clone () at /lib64/libc.so.6

Thread 8 (Thread 0x7fb994daf700 (LWP 4373)):
#0  0x00007fbac57b41c9 in g_mutex_lock () at /lib64/libglib-2.0.so.0
#1  0x00007fbac576f3f9 in g_main_context_prepare () at /lib64/libglib-2.0.so.0
#2  0x00007fbac576fd4b in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#3  0x00007fbac576ff3c in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#4  0x00007fbaca91a73c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#5  0x00007fbaca8c0d42 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#6  0x00007fbaca6d36f4 in QThread::exec() () at /lib64/libQt5Core.so.5
#7  0x00007fbacceb6275 in QQmlThreadPrivate::run() () at /lib64/libQt5Qml.so.5
#8  0x00007fbaca6d84ce in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#9  0x00007fbac983552a in start_thread () at /lib64/libpthread.so.0
#10 0x00007fbac9b4a77d in clone () at /lib64/libc.so.6

Thread 7 (Thread 0x7fb98f7ff700 (LWP 4374)):
#0  0x00007fbac57b41e4 in g_mutex_unlock () at /lib64/libglib-2.0.so.0
#1  0x00007fbac576fdd9 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#2  0x00007fbac576ff3c in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#3  0x00007fbaca91a73c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#4  0x00007fbaca8c0d42 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#5  0x00007fbaca6d36f4 in QThread::exec() () at /lib64/libQt5Core.so.5
#6  0x00007fbacceb6275 in QQmlThreadPrivate::run() () at /lib64/libQt5Qml.so.5
#7  0x00007fbaca6d84ce in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#8  0x00007fbac983552a in start_thread () at /lib64/libpthread.so.0
#9  0x00007fbac9b4a77d in clone () at /lib64/libc.so.6

Thread 6 (Thread 0x7fb98e7fe700 (LWP 4375)):
#0  0x00007fbac57b41c9 in g_mutex_lock () at /lib64/libglib-2.0.so.0
#1  0x00007fbac576ef18 in g_main_context_release () at /lib64/libglib-2.0.so.0
#2  0x00007fbac576fdd9 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#3  0x00007fbac576ff3c in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#4  0x00007fbaca91a73c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#5  0x00007fbaca8c0d42 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#6  0x00007fbaca6d36f4 in QThread::exec() () at /lib64/libQt5Core.so.5
#7  0x00007fbacceb6275 in QQmlThreadPrivate::run() () at /lib64/libQt5Qml.so.5
#8  0x00007fbaca6d84ce in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#9  0x00007fbac983552a in start_thread () at /lib64/libpthread.so.0
#10 0x00007fbac9b4a77d in clone () at /lib64/libc.so.6

Thread 5 (Thread 0x7fb98d7fd700 (LWP 4376)):
#0  0x00007fff47184b3f in clock_gettime ()
#1  0x00007fbac9b589fd in clock_gettime () at /lib64/libc.so.6
#2  0x00007fbaca78d026 in qt_gettime() () at /lib64/libQt5Core.so.5
#3  0x00007fbaca918219 in QTimerInfoList::updateCurrentTime() () at /lib64/libQt5Core.so.5
#4  0x00007fbaca918785 in QTimerInfoList::timerWait(timespec&) () at /lib64/libQt5Core.so.5
#5  0x00007fbaca919b5e in timerSourcePrepare(_GSource*, int*) () at /lib64/libQt5Core.so.5
#6  0x00007fbac576f3ed in g_main_context_prepare () at /lib64/libglib-2.0.so.0
#7  0x00007fbac576fd4b in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#8  0x00007fbac576ff3c in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#9  0x00007fbaca91a73c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#10 0x00007fbaca8c0d42 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#11 0x00007fbaca6d36f4 in QThread::exec() () at /lib64/libQt5Core.so.5
#12 0x00007fbacceb6275 in QQmlThreadPrivate::run() () at /lib64/libQt5Qml.so.5
#13 0x00007fbaca6d84ce in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#14 0x00007fbac983552a in start_thread () at /lib64/libpthread.so.0
#15 0x00007fbac9b4a77d in clone () at /lib64/libc.so.6

Thread 4 (Thread 0x7fb9836da700 (LWP 4381)):
#0  0x00007fbac9b3f1dd in poll () at /lib64/libc.so.6
#1  0x00007fbac576fe24 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#2  0x00007fbac576ff3c in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#3  0x00007fbaca91a73c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#4  0x00007fbaca8c0d42 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#5  0x00007fbaca6d36f4 in QThread::exec() () at /lib64/libQt5Core.so.5
#6  0x00007fbacceb6275 in QQmlThreadPrivate::run() () at /lib64/libQt5Qml.so.5
#7  0x00007fbaca6d84ce in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#8  0x00007fbac983552a in start_thread () at /lib64/libpthread.so.0
#9  0x00007fbac9b4a77d in clone () at /lib64/libc.so.6

Thread 3 (Thread 0x7fb981ddb700 (LWP 5596)):
#0  0x00007fbac9b3ae4d in read () at /lib64/libc.so.6
#1  0x00007fbac57b2d30 in g_wakeup_acknowledge () at /lib64/libglib-2.0.so.0
#2  0x00007fbac576f8ec in g_main_context_check () at /lib64/libglib-2.0.so.0
#3  0x00007fbac576fdc3 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#4  0x00007fbac576ff3c in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#5  0x00007fbaca91a73c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#6  0x00007fbaca8c0d42 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#7  0x00007fbaca6d36f4 in QThread::exec() () at /lib64/libQt5Core.so.5
#8  0x00007fbacceb6275 in QQmlThreadPrivate::run() () at /lib64/libQt5Qml.so.5
#9  0x00007fbaca6d84ce in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#10 0x00007fbac983552a in start_thread () at /lib64/libpthread.so.0
#11 0x00007fbac9b4a77d in clone () at /lib64/libc.so.6

Thread 2 (Thread 0x7fb980ce8700 (LWP 5597)):
#0  0x00007fbac57b41e4 in g_mutex_unlock () at /lib64/libglib-2.0.so.0
#1  0x00007fbac576fd3e in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#2  0x00007fbac576ff3c in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#3  0x00007fbaca91a73c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#4  0x00007fbaca8c0d42 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#5  0x00007fbaca6d36f4 in QThread::exec() () at /lib64/libQt5Core.so.5
#6  0x00007fbacceb6275 in QQmlThreadPrivate::run() () at /lib64/libQt5Qml.so.5
#7  0x00007fbaca6d84ce in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#8  0x00007fbac983552a in start_thread () at /lib64/libpthread.so.0
#9  0x00007fbac9b4a77d in clone () at /lib64/libc.so.6

Thread 1 (Thread 0x7fbabb94e900 (LWP 4324)):
[KCrash Handler]
#5  0x00007fbacdecaad1 in KScreen::Config::output(int) const () at /lib64/libKF5Screen.so.6
#6  0x00007fbacded6437 in KScreen::ConfigMonitor::Private::edidReady(QDBusPendingCallWatcher*) () at /lib64/libKF5Screen.so.6
#7  0x00007fbaca8f245a in QMetaObject::activate(QObject*, int, int, void**) () at /lib64/libQt5Core.so.5
#8  0x00007fbad06260ef in QDBusPendingCallWatcher::finished(QDBusPendingCallWatcher*) () at /lib64/libQt5DBus.so.5
#9  0x00007fbad06277f5 in QDBusPendingCallWatcher::qt_static_metacall(QObject*, QMetaObject::Call, int, void**) () at /lib64/libQt5DBus.so.5
#10 0x00007fbaca8f3c2a in QObject::event(QEvent*) () at /lib64/libQt5Core.so.5
#11 0x00007fbacb1abd3c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /lib64/libQt5Widgets.so.5
#12 0x00007fbacb1b1330 in QApplication::notify(QObject*, QEvent*) () at /lib64/libQt5Widgets.so.5
#13 0x00007fbaca8c34ab in QCoreApplication::notifyInternal(QObject*, QEvent*) () at /lib64/libQt5Core.so.5
#14 0x00007fbaca8c54eb in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /lib64/libQt5Core.so.5
#15 0x00007fbaca91a333 in postEventSourceDispatch(_GSource*, int (*)(void*), void*) () at /lib64/libQt5Core.so.5
#16 0x00007fbac576faeb in g_main_context_dispatch () at /lib64/libglib-2.0.so.0
#17 0x00007fbac576fe88 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#18 0x00007fbac576ff3c in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#19 0x00007fbaca91a727 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#20 0x00007fbaca8c0d42 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#21 0x00007fbaca8c87ec in QCoreApplication::exec() () at /lib64/libQt5Core.so.5
#22 0x000000000042d64f in main ()

Reported using DrKonqi

Comment 1 David Edmundson 2015-01-02 15:42:06 UTC

This has been fixed in 5.1.2 onwards.

Comment 2 Elias Probst 2015-01-13 00:53:28 UTC

Still seeing this running up-to-date components:
- plasma-workspace master ca571355
- libkscreen master 4c5da6e7
- kscreen master 7a8460ac

Backtrace:
Thread 1 (Thread 0x7f97098c1800 (LWP 25465)):
[KCrash Handler]
#6  KScreen::Config::output (this=0x0, outputId=outputId@entry=67) at /var/tmp/portage/kde-plasma/libkscreen-9999/work/libkscreen-9999/src/config.cpp:181
#7  0x00007f9718d4f530 in KScreen::ConfigMonitor::Private::edidReady (this=0x3211aa0, watcher=<optimized out>) at /var/tmp/portage/kde-plasma/libkscreen-9999/work/libkscreen-9999/src/configmonitor.cpp:157
#8  0x00007f97166bc6af in call (a=0x7fffc09e2840, r=0x3211aa0, this=0x63bb120) at ../../include/QtCore/../../src/corelib/kernel/qobject_impl.h:124
#9  QMetaObject::activate (sender=0x6a227f0, signalOffset=<optimized out>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x7fffc09e2840) at kernel/qobject.cpp:3702
#10 0x00007f97166bd257 in QMetaObject::activate (sender=<optimized out>, m=m@entry=0x7f971b098640 <QDBusPendingCallWatcher::staticMetaObject>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x7fffc09e2840) at kernel/qobject.cpp:3582
#11 0x00007f971b07ca7f in QDBusPendingCallWatcher::finished (this=<optimized out>, _t1=0x6a227f0) at .moc/moc_qdbuspendingcall.cpp:147
#12 0x00007f971b07e107 in _q_finished (this=<optimized out>) at qdbuspendingcall.cpp:487
#13 QDBusPendingCallWatcher::qt_static_metacall (_o=<optimized out>, _c=<optimized out>, _id=<optimized out>, _a=<optimized out>) at .moc/moc_qdbuspendingcall.cpp:79
#14 0x00007f97166bda36 in QObject::event (this=0x6a227f0, e=<optimized out>) at kernel/qobject.cpp:1245
#15 0x00007f9716f43f0c in QApplicationPrivate::notify_helper (this=this@entry=0x16a4630, receiver=receiver@entry=0x6a227f0, e=e@entry=0x73330d0) at kernel/qapplication.cpp:3722
#16 0x00007f9716f48f20 in QApplication::notify (this=0x7fffc09e2fe0, receiver=0x6a227f0, e=0x73330d0) at kernel/qapplication.cpp:3505
#17 0x00007f971668d3e5 in QCoreApplication::notifyInternal (this=0x7fffc09e2fe0, receiver=0x6a227f0, event=event@entry=0x73330d0) at kernel/qcoreapplication.cpp:932
#18 0x00007f971668f27f in sendEvent (event=0x73330d0, receiver=<optimized out>) at kernel/qcoreapplication.h:228
#19 QCoreApplicationPrivate::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0, data=0x169a180) at kernel/qcoreapplication.cpp:1536
#20 0x00007f971668f8b8 in QCoreApplication::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0) at kernel/qcoreapplication.cpp:1394
#21 0x00007f97166e5223 in postEventSourceDispatch (s=0x16d9380) at kernel/qeventdispatcher_glib.cpp:271
#22 0x00007f9711b5d934 in g_main_dispatch (context=0x7f9700001e00) at /var/tmp/portage/dev-libs/glib-2.40.2/work/glib-2.40.2/glib/gmain.c:3064
#23 g_main_context_dispatch (context=context@entry=0x7f9700001e00) at /var/tmp/portage/dev-libs/glib-2.40.2/work/glib-2.40.2/glib/gmain.c:3663
#24 0x00007f9711b5db78 in g_main_context_iterate (context=context@entry=0x7f9700001e00, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /var/tmp/portage/dev-libs/glib-2.40.2/work/glib-2.40.2/glib/gmain.c:3734
#25 0x00007f9711b5dc1c in g_main_context_iteration (context=0x7f9700001e00, may_block=1) at /var/tmp/portage/dev-libs/glib-2.40.2/work/glib-2.40.2/glib/gmain.c:3795
#26 0x00007f97166e469c in QEventDispatcherGlib::processEvents (this=0x16dd320, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#27 0x00007f971668b34b in QEventLoop::exec (this=this@entry=0x7fffc09e2e70, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#28 0x00007f97166929b6 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1185
#29 0x00007f97169b586c in QGuiApplication::exec () at kernel/qguiapplication.cpp:1532
#30 0x00007f9716f40715 in QApplication::exec () at kernel/qapplication.cpp:2956
#31 0x000000000042f1b4 in main (argc=2, argv=<optimized out>) at /var/tmp/portage/kde-plasma/plasma-workspace-9999/work/plasma-workspace-9999/shell/main.cpp:150

Comment 3 Matt Spaulding 2015-01-19 18:03:03 UTC

I am seeing this with a Lenovo x220 as well.

Running openSUSE with these packages:
plasma5-workspace-5.1.95-37.1.x86_64
kscreen5-5.1.95-6.1.x86_64
libkscreen2-plugin-5.1.95-29.1.x86_64

Backtrace of the crash I experienced:

Application: plasmashell (plasmashell), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f6a6bb9f7c0 (LWP 2529))]

Thread 28 (Thread 0x7f6a56073700 (LWP 2534)):
#0  0x00007f6a659004ad in poll () at /lib64/libc.so.6
#1  0x00007f6a689d7322 in  () at /usr/lib64/libxcb.so.1
#2  0x00007f6a689d8def in xcb_wait_for_event () at /usr/lib64/libxcb.so.1
#3  0x00007f6a583c2c19 in  () at /usr/lib64/qt5/plugins/platforms/libqxcb.so
#4  0x00007f6a65f7091f in  () at /usr/lib64/libQt5Core.so.5
#5  0x00007f6a64fbe3a4 in start_thread () at /lib64/libpthread.so.0
#6  0x00007f6a65908a4d in clone () at /lib64/libc.so.6

Thread 27 (Thread 0x7f6a4f2cb700 (LWP 2547)):
#0  0x00007f6a659004ad in poll () at /lib64/libc.so.6
#1  0x00007f6a61baabe4 in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007f6a61baacec in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#3  0x00007f6a661a211b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#4  0x00007f6a66148d1b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007f6a65f6bcea in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#6  0x00007f6a68476cc8 in  () at /usr/lib64/libQt5Qml.so.5
#7  0x00007f6a65f7091f in  () at /usr/lib64/libQt5Core.so.5
#8  0x00007f6a64fbe3a4 in start_thread () at /lib64/libpthread.so.0
#9  0x00007f6a65908a4d in clone () at /lib64/libc.so.6

Thread 26 (Thread 0x7f6a3e2f1700 (LWP 2579)):
#0  0x00007f6a659004ad in poll () at /lib64/libc.so.6
#1  0x00007f6a61baabe4 in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007f6a61baacec in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#3  0x00007f6a661a211b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#4  0x00007f6a66148d1b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007f6a65f6bcea in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#6  0x00007f6a68476cc8 in  () at /usr/lib64/libQt5Qml.so.5
#7  0x00007f6a65f7091f in  () at /usr/lib64/libQt5Core.so.5
#8  0x00007f6a64fbe3a4 in start_thread () at /lib64/libpthread.so.0
#9  0x00007f6a65908a4d in clone () at /lib64/libc.so.6

Thread 25 (Thread 0x7f6a3ca4f700 (LWP 2595)):
#0  0x00007f6a659004ad in poll () at /lib64/libc.so.6
#1  0x00007f6a61baabe4 in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007f6a61baacec in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#3  0x00007f6a661a211b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#4  0x00007f6a66148d1b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007f6a65f6bcea in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#6  0x00007f6a68476cc8 in  () at /usr/lib64/libQt5Qml.so.5
#7  0x00007f6a65f7091f in  () at /usr/lib64/libQt5Core.so.5
#8  0x00007f6a64fbe3a4 in start_thread () at /lib64/libpthread.so.0
#9  0x00007f6a65908a4d in clone () at /lib64/libc.so.6

Thread 24 (Thread 0x7f6a377ff700 (LWP 2596)):
#0  0x00007f6a658fc57d in read () at /lib64/libc.so.6
#1  0x00007f6a61beb750 in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007f6a61baa714 in g_main_context_check () at /usr/lib64/libglib-2.0.so.0
#3  0x00007f6a61baab7b in  () at /usr/lib64/libglib-2.0.so.0
#4  0x00007f6a61baacec in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#5  0x00007f6a661a211b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#6  0x00007f6a66148d1b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#7  0x00007f6a65f6bcea in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#8  0x00007f6a68476cc8 in  () at /usr/lib64/libQt5Qml.so.5
#9  0x00007f6a65f7091f in  () at /usr/lib64/libQt5Core.so.5
#10 0x00007f6a64fbe3a4 in start_thread () at /lib64/libpthread.so.0
#11 0x00007f6a65908a4d in clone () at /lib64/libc.so.6

Thread 23 (Thread 0x7f6a367fe700 (LWP 2598)):
#0  0x00007f6a659004ad in poll () at /lib64/libc.so.6
#1  0x00007f6a61baabe4 in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007f6a61baacec in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#3  0x00007f6a661a211b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#4  0x00007f6a66148d1b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007f6a65f6bcea in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#6  0x00007f6a68476cc8 in  () at /usr/lib64/libQt5Qml.so.5
#7  0x00007f6a65f7091f in  () at /usr/lib64/libQt5Core.so.5
#8  0x00007f6a64fbe3a4 in start_thread () at /lib64/libpthread.so.0
#9  0x00007f6a65908a4d in clone () at /lib64/libc.so.6

Thread 22 (Thread 0x7f6a3576d700 (LWP 2599)):
#0  0x00007f6a61ba7f90 in  () at /usr/lib64/libglib-2.0.so.0
#1  0x00007f6a61baa22b in g_main_context_prepare () at /usr/lib64/libglib-2.0.so.0
#2  0x00007f6a61baab03 in  () at /usr/lib64/libglib-2.0.so.0
#3  0x00007f6a61baacec in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#4  0x00007f6a661a211b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007f6a66148d1b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#6  0x00007f6a65f6bcea in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#7  0x00007f6a68476cc8 in  () at /usr/lib64/libQt5Qml.so.5
#8  0x00007f6a65f7091f in  () at /usr/lib64/libQt5Core.so.5
#9  0x00007f6a64fbe3a4 in start_thread () at /lib64/libpthread.so.0
#10 0x00007f6a65908a4d in clone () at /lib64/libc.so.6

Thread 21 (Thread 0x7f6a23fff700 (LWP 2600)):
#0  0x00007f6a61ba7fe3 in  () at /usr/lib64/libglib-2.0.so.0
#1  0x00007f6a61baa22b in g_main_context_prepare () at /usr/lib64/libglib-2.0.so.0
#2  0x00007f6a61baab03 in  () at /usr/lib64/libglib-2.0.so.0
#3  0x00007f6a61baacec in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#4  0x00007f6a661a211b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007f6a66148d1b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#6  0x00007f6a65f6bcea in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#7  0x00007f6a68476cc8 in  () at /usr/lib64/libQt5Qml.so.5
#8  0x00007f6a65f7091f in  () at /usr/lib64/libQt5Core.so.5
#9  0x00007f6a64fbe3a4 in start_thread () at /lib64/libpthread.so.0
#10 0x00007f6a65908a4d in clone () at /lib64/libc.so.6

Thread 20 (Thread 0x7f6a22ffe700 (LWP 2601)):
#0  0x00007f6a659004ad in poll () at /lib64/libc.so.6
#1  0x00007f6a61baabe4 in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007f6a61baacec in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#3  0x00007f6a661a211b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#4  0x00007f6a66148d1b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007f6a65f6bcea in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#6  0x00007f6a68476cc8 in  () at /usr/lib64/libQt5Qml.so.5
#7  0x00007f6a65f7091f in  () at /usr/lib64/libQt5Core.so.5
#8  0x00007f6a64fbe3a4 in start_thread () at /lib64/libpthread.so.0
#9  0x00007f6a65908a4d in clone () at /lib64/libc.so.6

Thread 19 (Thread 0x7f6a21dde700 (LWP 2602)):
#0  0x00007f6a61baa7b2 in g_main_context_dispatch () at /usr/lib64/libglib-2.0.so.0
#1  0x00007f6a61baac48 in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007f6a61baacec in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#3  0x00007f6a661a211b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#4  0x00007f6a66148d1b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007f6a65f6bcea in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#6  0x00007f6a68476cc8 in  () at /usr/lib64/libQt5Qml.so.5
#7  0x00007f6a65f7091f in  () at /usr/lib64/libQt5Core.so.5
#8  0x00007f6a64fbe3a4 in start_thread () at /lib64/libpthread.so.0
#9  0x00007f6a65908a4d in clone () at /lib64/libc.so.6

Thread 18 (Thread 0x7f6a20b65700 (LWP 2603)):
#0  0x00007f6a658fc57d in read () at /lib64/libc.so.6
#1  0x00007f6a61beb750 in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007f6a61baa714 in g_main_context_check () at /usr/lib64/libglib-2.0.so.0
#3  0x00007f6a61baab7b in  () at /usr/lib64/libglib-2.0.so.0
#4  0x00007f6a61baacec in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#5  0x00007f6a661a211b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#6  0x00007f6a66148d1b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#7  0x00007f6a65f6bcea in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#8  0x00007f6a68476cc8 in  () at /usr/lib64/libQt5Qml.so.5
#9  0x00007f6a65f7091f in  () at /usr/lib64/libQt5Core.so.5
#10 0x00007f6a64fbe3a4 in start_thread () at /lib64/libpthread.so.0
#11 0x00007f6a65908a4d in clone () at /lib64/libc.so.6

Thread 17 (Thread 0x7f6a137ff700 (LWP 2604)):
#0  0x00007f6a658fc57d in read () at /lib64/libc.so.6
#1  0x00007f6a61beb750 in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007f6a61baa714 in g_main_context_check () at /usr/lib64/libglib-2.0.so.0
#3  0x00007f6a61baab7b in  () at /usr/lib64/libglib-2.0.so.0
#4  0x00007f6a61baacec in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#5  0x00007f6a661a211b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#6  0x00007f6a66148d1b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#7  0x00007f6a65f6bcea in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#8  0x00007f6a68476cc8 in  () at /usr/lib64/libQt5Qml.so.5
#9  0x00007f6a65f7091f in  () at /usr/lib64/libQt5Core.so.5
#10 0x00007f6a64fbe3a4 in start_thread () at /lib64/libpthread.so.0
#11 0x00007f6a65908a4d in clone () at /lib64/libc.so.6

Thread 16 (Thread 0x7f6a127fe700 (LWP 2605)):
#0  0x00007f6a61bec904 in g_mutex_unlock () at /usr/lib64/libglib-2.0.so.0
#1  0x00007f6a61baa659 in g_main_context_check () at /usr/lib64/libglib-2.0.so.0
#2  0x00007f6a61baab7b in  () at /usr/lib64/libglib-2.0.so.0
#3  0x00007f6a61baacec in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#4  0x00007f6a661a211b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007f6a66148d1b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#6  0x00007f6a65f6bcea in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#7  0x00007f6a68476cc8 in  () at /usr/lib64/libQt5Qml.so.5
#8  0x00007f6a65f7091f in  () at /usr/lib64/libQt5Core.so.5
#9  0x00007f6a64fbe3a4 in start_thread () at /lib64/libpthread.so.0
#10 0x00007f6a65908a4d in clone () at /lib64/libc.so.6

Thread 15 (Thread 0x7f6a117fd700 (LWP 2606)):
#0  0x00007f6a64fc285f in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f6a6a56f47b in  () at /usr/lib64/libQt5Script.so.5
#2  0x00007f6a6a56f4a9 in  () at /usr/lib64/libQt5Script.so.5
#3  0x00007f6a64fbe3a4 in start_thread () at /lib64/libpthread.so.0
#4  0x00007f6a65908a4d in clone () at /lib64/libc.so.6

Thread 14 (Thread 0x7f6a10efc700 (LWP 2607)):
#0  0x00007f6a658fc57d in read () at /lib64/libc.so.6
#1  0x00007f6a61beb750 in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007f6a61baa714 in g_main_context_check () at /usr/lib64/libglib-2.0.so.0
#3  0x00007f6a61baab7b in  () at /usr/lib64/libglib-2.0.so.0
#4  0x00007f6a61baacec in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#5  0x00007f6a661a211b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#6  0x00007f6a66148d1b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#7  0x00007f6a65f6bcea in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#8  0x00007f6a68476cc8 in  () at /usr/lib64/libQt5Qml.so.5
#9  0x00007f6a65f7091f in  () at /usr/lib64/libQt5Core.so.5
#10 0x00007f6a64fbe3a4 in start_thread () at /lib64/libpthread.so.0
#11 0x00007f6a65908a4d in clone () at /lib64/libc.so.6

Thread 13 (Thread 0x7f697f5ac700 (LWP 2608)):
#0  0x00007f6a61bec904 in g_mutex_unlock () at /usr/lib64/libglib-2.0.so.0
#1  0x00007f6a61baa280 in g_main_context_prepare () at /usr/lib64/libglib-2.0.so.0
#2  0x00007f6a61baab03 in  () at /usr/lib64/libglib-2.0.so.0
#3  0x00007f6a61baacec in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#4  0x00007f6a661a211b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007f6a66148d1b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#6  0x00007f6a65f6bcea in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#7  0x00007f6a68476cc8 in  () at /usr/lib64/libQt5Qml.so.5
#8  0x00007f6a65f7091f in  () at /usr/lib64/libQt5Core.so.5
#9  0x00007f6a64fbe3a4 in start_thread () at /lib64/libpthread.so.0
#10 0x00007f6a65908a4d in clone () at /lib64/libc.so.6

Thread 12 (Thread 0x7f697dbb7700 (LWP 2609)):
#0  0x00007f6a658fc57d in read () at /lib64/libc.so.6
#1  0x00007f6a61beb750 in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007f6a61baa714 in g_main_context_check () at /usr/lib64/libglib-2.0.so.0
#3  0x00007f6a61baab7b in  () at /usr/lib64/libglib-2.0.so.0
#4  0x00007f6a61baacec in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#5  0x00007f6a661a211b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#6  0x00007f6a66148d1b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#7  0x00007f6a65f6bcea in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#8  0x00007f6a6b548e12 in  () at /usr/lib64/libQt5Quick.so.5
#9  0x00007f6a65f7091f in  () at /usr/lib64/libQt5Core.so.5
#10 0x00007f6a64fbe3a4 in start_thread () at /lib64/libpthread.so.0
#11 0x00007f6a65908a4d in clone () at /lib64/libc.so.6

Thread 11 (Thread 0x7f697cb9c700 (LWP 2610)):
#0  0x00007f6a61bec8e9 in g_mutex_lock () at /usr/lib64/libglib-2.0.so.0
#1  0x00007f6a61baabca in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007f6a61baacec in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#3  0x00007f6a661a211b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#4  0x00007f6a66148d1b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007f6a65f6bcea in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#6  0x00007f6a68476cc8 in  () at /usr/lib64/libQt5Qml.so.5
#7  0x00007f6a65f7091f in  () at /usr/lib64/libQt5Core.so.5
#8  0x00007f6a64fbe3a4 in start_thread () at /lib64/libpthread.so.0
#9  0x00007f6a65908a4d in clone () at /lib64/libc.so.6

Thread 10 (Thread 0x7f696d738700 (LWP 2623)):
#0  0x00007f6a61bec8e9 in g_mutex_lock () at /usr/lib64/libglib-2.0.so.0
#1  0x00007f6a61baa299 in g_main_context_prepare () at /usr/lib64/libglib-2.0.so.0
#2  0x00007f6a61baab03 in  () at /usr/lib64/libglib-2.0.so.0
#3  0x00007f6a61baacec in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#4  0x00007f6a661a211b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007f6a66148d1b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#6  0x00007f6a65f6bcea in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#7  0x00007f6a68476cc8 in  () at /usr/lib64/libQt5Qml.so.5
#8  0x00007f6a65f7091f in  () at /usr/lib64/libQt5Core.so.5
#9  0x00007f6a64fbe3a4 in start_thread () at /lib64/libpthread.so.0
#10 0x00007f6a65908a4d in clone () at /lib64/libc.so.6

Thread 9 (Thread 0x7f6967fff700 (LWP 2624)):
#0  0x00007f6a61bec8e9 in g_mutex_lock () at /usr/lib64/libglib-2.0.so.0
#1  0x00007f6a61baacd8 in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#2  0x00007f6a661a211b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#3  0x00007f6a66148d1b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#4  0x00007f6a65f6bcea in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#5  0x00007f6a68476cc8 in  () at /usr/lib64/libQt5Qml.so.5
#6  0x00007f6a65f7091f in  () at /usr/lib64/libQt5Core.so.5
#7  0x00007f6a64fbe3a4 in start_thread () at /lib64/libpthread.so.0
#8  0x00007f6a65908a4d in clone () at /lib64/libc.so.6

Thread 8 (Thread 0x7f6966ffe700 (LWP 2625)):
#0  0x00007f6a658fc57d in read () at /lib64/libc.so.6
#1  0x00007f6a61beb750 in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007f6a61baa714 in g_main_context_check () at /usr/lib64/libglib-2.0.so.0
#3  0x00007f6a61baab7b in  () at /usr/lib64/libglib-2.0.so.0
#4  0x00007f6a61baacec in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#5  0x00007f6a661a211b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#6  0x00007f6a66148d1b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#7  0x00007f6a65f6bcea in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#8  0x00007f6a68476cc8 in  () at /usr/lib64/libQt5Qml.so.5
#9  0x00007f6a65f7091f in  () at /usr/lib64/libQt5Core.so.5
#10 0x00007f6a64fbe3a4 in start_thread () at /lib64/libpthread.so.0
#11 0x00007f6a65908a4d in clone () at /lib64/libc.so.6

Thread 7 (Thread 0x7f6965ffd700 (LWP 2626)):
#0  0x00007f6a658fc57d in read () at /lib64/libc.so.6
#1  0x00007f6a61beb750 in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007f6a61baa714 in g_main_context_check () at /usr/lib64/libglib-2.0.so.0
#3  0x00007f6a61baab7b in  () at /usr/lib64/libglib-2.0.so.0
#4  0x00007f6a61baacec in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#5  0x00007f6a661a211b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#6  0x00007f6a66148d1b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#7  0x00007f6a65f6bcea in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#8  0x00007f6a68476cc8 in  () at /usr/lib64/libQt5Qml.so.5
#9  0x00007f6a65f7091f in  () at /usr/lib64/libQt5Core.so.5
#10 0x00007f6a64fbe3a4 in start_thread () at /lib64/libpthread.so.0
#11 0x00007f6a65908a4d in clone () at /lib64/libc.so.6

Thread 6 (Thread 0x7f6957456700 (LWP 2630)):
#0  0x00007f6a61baa659 in g_main_context_check () at /usr/lib64/libglib-2.0.so.0
#1  0x00007f6a61baab7b in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007f6a61baacec in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#3  0x00007f6a661a211b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#4  0x00007f6a66148d1b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007f6a65f6bcea in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#6  0x00007f6a68476cc8 in  () at /usr/lib64/libQt5Qml.so.5
#7  0x00007f6a65f7091f in  () at /usr/lib64/libQt5Core.so.5
#8  0x00007f6a64fbe3a4 in start_thread () at /lib64/libpthread.so.0
#9  0x00007f6a65908a4d in clone () at /lib64/libc.so.6

Thread 5 (Thread 0x7f69550ad700 (LWP 2642)):
#0  0x00007f6a61bec904 in g_mutex_unlock () at /usr/lib64/libglib-2.0.so.0
#1  0x00007f6a61baaaf6 in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007f6a61baacec in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#3  0x00007f6a661a211b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#4  0x00007f6a66148d1b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007f6a65f6bcea in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#6  0x00007f6a68476cc8 in  () at /usr/lib64/libQt5Qml.so.5
#7  0x00007f6a65f7091f in  () at /usr/lib64/libQt5Core.so.5
#8  0x00007f6a64fbe3a4 in start_thread () at /lib64/libpthread.so.0
#9  0x00007f6a65908a4d in clone () at /lib64/libc.so.6

Thread 4 (Thread 0x7f6947fff700 (LWP 9269)):
#0  0x00007f6a658fc57d in read () at /lib64/libc.so.6
#1  0x00007f6a61beb750 in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007f6a61baa714 in g_main_context_check () at /usr/lib64/libglib-2.0.so.0
#3  0x00007f6a61baab7b in  () at /usr/lib64/libglib-2.0.so.0
#4  0x00007f6a61baacec in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#5  0x00007f6a661a211b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#6  0x00007f6a66148d1b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#7  0x00007f6a65f6bcea in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#8  0x00007f6a68476cc8 in  () at /usr/lib64/libQt5Qml.so.5
#9  0x00007f6a65f7091f in  () at /usr/lib64/libQt5Core.so.5
#10 0x00007f6a64fbe3a4 in start_thread () at /lib64/libpthread.so.0
#11 0x00007f6a65908a4d in clone () at /lib64/libc.so.6

Thread 3 (Thread 0x7f6946fae700 (LWP 9270)):
#0  0x00007f6a659004ad in poll () at /lib64/libc.so.6
#1  0x00007f6a61baabe4 in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007f6a61baacec in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#3  0x00007f6a661a211b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#4  0x00007f6a66148d1b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007f6a65f6bcea in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#6  0x00007f6a68476cc8 in  () at /usr/lib64/libQt5Qml.so.5
#7  0x00007f6a65f7091f in  () at /usr/lib64/libQt5Core.so.5
#8  0x00007f6a64fbe3a4 in start_thread () at /lib64/libpthread.so.0
#9  0x00007f6a65908a4d in clone () at /lib64/libc.so.6

Thread 2 (Thread 0x7f6945ead700 (LWP 9271)):
#0  0x00007f6a658fc57d in read () at /lib64/libc.so.6
#1  0x00007f6a61beb750 in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007f6a61baa714 in g_main_context_check () at /usr/lib64/libglib-2.0.so.0
#3  0x00007f6a61baab7b in  () at /usr/lib64/libglib-2.0.so.0
#4  0x00007f6a61baacec in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#5  0x00007f6a661a211b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#6  0x00007f6a66148d1b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#7  0x00007f6a65f6bcea in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#8  0x00007f6a6b548e12 in  () at /usr/lib64/libQt5Quick.so.5
#9  0x00007f6a65f7091f in  () at /usr/lib64/libQt5Core.so.5
#10 0x00007f6a64fbe3a4 in start_thread () at /lib64/libpthread.so.0
#11 0x00007f6a65908a4d in clone () at /lib64/libc.so.6

Thread 1 (Thread 0x7f6a6bb9f7c0 (LWP 2529)):
[KCrash Handler]
#5  0x00007f6a69220a4f in KScreen::Config::output(int) const () at /usr/lib64/libKF5Screen.so.6
#6  0x00007f6a6922989b in KScreen::ConfigMonitor::Private::edidReady(QDBusPendingCallWatcher*) () at /usr/lib64/libKF5Screen.so.6
#7  0x00007f6a6617a0bf in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib64/libQt5Core.so.5
#8  0x00007f6a6b229caf in QDBusPendingCallWatcher::finished(QDBusPendingCallWatcher*) () at /usr/lib64/libQt5DBus.so.5
#9  0x00007f6a6b22b337 in  () at /usr/lib64/libQt5DBus.so.5
#10 0x00007f6a6617b446 in QObject::event(QEvent*) () at /usr/lib64/libQt5Core.so.5
#11 0x00007f6a66e081dc in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#12 0x00007f6a66e0d1f0 in QApplication::notify(QObject*, QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#13 0x00007f6a6614adc5 in QCoreApplication::notifyInternal(QObject*, QEvent*) () at /usr/lib64/libQt5Core.so.5
#14 0x00007f6a6614cc5f in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /usr/lib64/libQt5Core.so.5
#15 0x00007f6a661a2c83 in  () at /usr/lib64/libQt5Core.so.5
#16 0x00007f6a61baaa04 in g_main_context_dispatch () at /usr/lib64/libglib-2.0.so.0
#17 0x00007f6a61baac48 in  () at /usr/lib64/libglib-2.0.so.0
#18 0x00007f6a61baacec in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#19 0x00007f6a661a20fc in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#20 0x00007f6a66148d1b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#21 0x00007f6a661503a6 in QCoreApplication::exec() () at /usr/lib64/libQt5Core.so.5
#22 0x0000000000432144 in main ()

Comment 4 Bhushan Shah 2015-01-30 06:06:31 UTC

*** Bug 343339 has been marked as a duplicate of this bug. ***

Comment 5 Bhushan Shah 2015-01-30 06:10:22 UTC

I think this is quite grave, CCing apol

Comment 6 Aleix Pol 2015-01-31 11:55:42 UTC

Can we maybe get a backtrace with debug symbols? It will make it easier to debug...

Comment 7 Rex Dieter 2015-01-31 15:12:27 UTC

FYI,

we've been investigating related issues downstream (in fedora), see bugs:

(this issue I believe):  https://bugzilla.redhat.com/show_bug.cgi?id=1187324
have a candidate patch, hopefully close for reviewboard soon

and (qt5 apps disappear when disconnecting displays):
https://bugzilla.redhat.com/show_bug.cgi?id=1083664
https://bugreports.qt.io/browse/QTBUG-42985

Comment 8 R.Harish Navnit 2015-01-31 15:44:11 UTC

Created attachment 90837 [details]
backtrace with debug symbols for plasmashell

I hope this can be of some help. Here are the steps I took to reproduce the bug
1. Kill(all) plasmashell
2. switch to vt
3. run plasmashell in gdb
4. disconnect the external monitor once plasmashell loads
5. retrieve the backtrace from gdb

Comment 9 Niklas 2015-02-01 11:38:35 UTC

since the 5.2 update the original posted crash haven't occur any more for me.
If the other affected users can confirm this, I propose to close this bug report.

Comment 10 R.Harish Navnit 2015-02-01 11:45:29 UTC

(In reply to kde from comment #9)
> since the 5.2 update the original posted crash haven't occur any more for me.
> If the other affected users can confirm this, I propose to close this bug
> report.

I'm on master(I added the ppa:kubuntu-ci/unstable) and I still face this issue. Any ideas ?

Comment 11 David Edmundson 2015-02-03 08:53:17 UTC

Harish, your backtrace is comment 8 is completely different.

Thread 1 (Thread 0x7ffff7e48880 (LWP 19845)):
#0  QScreen::handle (this=this@entry=0x0) at kernel/qscreen.cpp:85
#1  0x00007fffe64befc2 in QXcbNativeInterface::nativeResourceForScreen (this=<optimized out>, resource=..., screen=0x0) at qxcbnativeinterface.cpp:257
#2  0x00007ffff7f4c9bb in QX11Info::display() () from /usr/lib/x86_64-linux-gnu/libQt5X11Extras.so.5
#3  0x00000000004456dc in PanelShadows::Private::clearShadow (window=0xa9fe40, this=<optimized out>) at ../../shell/panelshadows.cpp:493
#4  0x0000000000448445 in clearShadow (window=<optimized out>, this=<optimized out>) at ../../shell/panelshadows.cpp:147
#5  PanelShadows::removeWindow (this=0x697aa0 <(anonymous namespace)::Q_QGS_privateDialogShadowsSelf::innerFunction()::holder>, window=window@entry=0xa9fe40)
    at ../../shell/panelshadows.cpp:142
#6  0x000000000043facf in PanelView::~PanelView (this=0xa9fe40, __in_chrg=<optimized out>) at ../../shell/panelview.cpp:124
#7  0x000000000043fb49 in PanelView::~PanelView (this=0xa9fe40, __in_chrg=<optimized out>) at ../../shell/panelview.cpp:125
#8  0x000000000044f4c4 in ShellCorona::removeView (this=0x700770, idx=0) at ../../shell/shellcorona.cpp:695
#9  0x000000000044f549 in ShellCorona::screenRemoved (this=0x700770, screen=<optimized out>) at ../../shell/shellcorona.cpp:728
#10 0x00007ffff352efea in call (a=0x7fffffffdf80, r=0x700770, this=0x9be270) at ../../include/QtCore/../../src/corelib/kernel/qobject_impl.h:124
#11 QMetaObject::activate (sender=0x7fffffffea00, signalOffset=<optimized out>, local_signal_index=local_signal_index@entry=2, argv=argv@entry=0x7fffffffdf80)
    at kernel/qobject.cpp:3702

I have to close this one, as otherwise the logs get way too confusing.