Bug 346512

Summary: plasmashell crashes while leaving lock screen
Product: [Plasma] plasmashell Reporter: Marcelo Ricardo Leitner <marcelo.leitner>
Component: generalAssignee: David Edmundson <kde>
Status: RESOLVED DUPLICATE    
Severity: crash CC: bshah, plasma-bugs-null
Priority: NOR Keywords: drkonqi
Version First Reported In: 5.2.2   
Target Milestone: 1.0   
Platform: Fedora RPMs   
OS: Linux   
Latest Commit: Version Fixed/Implemented In:
Sentry Crash Report:

Description Marcelo Ricardo Leitner 2015-04-23 16:54:26 UTC 
Application: plasmashell (5.2.2)

Qt Version: 5.4.1
Operating System: Linux 4.0.0-0.rc5.git4.1.fc22.x86_64 x86_64
Distribution: "Fedora release 22 (Twenty Two)"

-- Information about the crash:
- What I was doing when the application crashed:
$subject says it all. I have dual-monitor setup, laptop screen and external on DP. This crash happened while exiting the lock screen. Using F22 updated yesterday. plasma-workspace-5.2.2-6.fc22.x86_64

-- Backtrace:
Application: Plasma (plasmashell), signal: Aborted
Using host libthread_db library "/lib64/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f247e6a5900 (LWP 18436))]

Thread 29 (Thread 0x7f245f448700 (LWP 18437)):
#0  0x00007f24765b666d in poll () at /lib64/libc.so.6
#1  0x00007f247c968182 in _xcb_conn_wait () at /lib64/libxcb.so.1
#2  0x00007f247c969cff in xcb_wait_for_event () at /lib64/libxcb.so.1
#3  0x00007f2460f905e9 in QXcbEventReader::run() () at /usr/lib64/qt5/plugins/platforms/libqxcb.so
#4  0x00007f24771c045e in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#5  0x00007f2475070555 in start_thread () at /lib64/libpthread.so.0
#6  0x00007f24765c1f3d in clone () at /lib64/libc.so.6

Thread 28 (Thread 0x7f245cf3a700 (LWP 18438)):
#0  0x00007f24773eeac1 in postEventSourcePrepare(_GSource*, int*) () at /lib64/libQt5Core.so.5
#1  0x00007f2471b8198d in g_main_context_prepare () at /lib64/libglib-2.0.so.0
#2  0x00007f2471b8231b in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#3  0x00007f2471b824fc in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#4  0x00007f24773ef4eb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#5  0x00007f247739627a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#6  0x00007f24771bb494 in QThread::exec() () at /lib64/libQt5Core.so.5
#7  0x00007f247b4143e5 in QQmlThreadPrivate::run() () at /lib64/libQt5Qml.so.5
#8  0x00007f24771c045e in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#9  0x00007f2475070555 in start_thread () at /lib64/libpthread.so.0
#10 0x00007f24765c1f3d in clone () at /lib64/libc.so.6

Thread 27 (Thread 0x7f244ffff700 (LWP 18439)):
#0  0x00007f2471bc7214 in g_mutex_unlock () at /lib64/libglib-2.0.so.0
#1  0x00007f2471b81e29 in g_main_context_check () at /lib64/libglib-2.0.so.0
#2  0x00007f2471b82390 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#3  0x00007f2471b824fc in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#4  0x00007f24773ef4eb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#5  0x00007f247739627a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#6  0x00007f24771bb494 in QThread::exec() () at /lib64/libQt5Core.so.5
#7  0x00007f247b4143e5 in QQmlThreadPrivate::run() () at /lib64/libQt5Qml.so.5
#8  0x00007f24771c045e in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#9  0x00007f2475070555 in start_thread () at /lib64/libpthread.so.0
#10 0x00007f24765c1f3d in clone () at /lib64/libc.so.6

Thread 26 (Thread 0x7f244e1b6700 (LWP 18443)):
#0  0x00007f2471b7f494 in g_source_iter_next () at /lib64/libglib-2.0.so.0
#1  0x00007f2471b8192b in g_main_context_prepare () at /lib64/libglib-2.0.so.0
#2  0x00007f2471b8231b in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#3  0x00007f2471b824fc in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#4  0x00007f24773ef4eb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#5  0x00007f247739627a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#6  0x00007f24771bb494 in QThread::exec() () at /lib64/libQt5Core.so.5
#7  0x00007f247b4143e5 in QQmlThreadPrivate::run() () at /lib64/libQt5Qml.so.5
#8  0x00007f24771c045e in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#9  0x00007f2475070555 in start_thread () at /lib64/libpthread.so.0
#10 0x00007f24765c1f3d in clone () at /lib64/libc.so.6

Thread 25 (Thread 0x7f244d185700 (LWP 18444)):
#0  0x00007f2471bc7214 in g_mutex_unlock () at /lib64/libglib-2.0.so.0
#1  0x00007f2471b81c69 in g_main_context_query () at /lib64/libglib-2.0.so.0
#2  0x00007f2471b82367 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#3  0x00007f2471b824fc in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#4  0x00007f24773ef4eb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#5  0x00007f247739627a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#6  0x00007f24771bb494 in QThread::exec() () at /lib64/libQt5Core.so.5
#7  0x00007f247b4143e5 in QQmlThreadPrivate::run() () at /lib64/libQt5Qml.so.5
#8  0x00007f24771c045e in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#9  0x00007f2475070555 in start_thread () at /lib64/libpthread.so.0
#10 0x00007f24765c1f3d in clone () at /lib64/libc.so.6

Thread 24 (Thread 0x7f243ffff700 (LWP 18445)):
#0  0x00007f2471bc71f9 in g_mutex_lock () at /lib64/libglib-2.0.so.0
#1  0x00007f2471b81999 in g_main_context_prepare () at /lib64/libglib-2.0.so.0
#2  0x00007f2471b8231b in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#3  0x00007f2471b824fc in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#4  0x00007f24773ef4eb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#5  0x00007f247739627a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#6  0x00007f24771bb494 in QThread::exec() () at /lib64/libQt5Core.so.5
#7  0x00007f247b4143e5 in QQmlThreadPrivate::run() () at /lib64/libQt5Qml.so.5
#8  0x00007f24771c045e in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#9  0x00007f2475070555 in start_thread () at /lib64/libpthread.so.0
#10 0x00007f24765c1f3d in clone () at /lib64/libc.so.6

Thread 23 (Thread 0x7f243ef7e700 (LWP 18446)):
#0  0x00007f24765b22f1 in read () at /lib64/libc.so.6
#1  0x00007f2471bc5d90 in g_wakeup_acknowledge () at /lib64/libglib-2.0.so.0
#2  0x00007f2471b81ee4 in g_main_context_check () at /lib64/libglib-2.0.so.0
#3  0x00007f2471b82390 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#4  0x00007f2471b824fc in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#5  0x00007f24773ef4eb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#6  0x00007f247739627a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#7  0x00007f24771bb494 in QThread::exec() () at /lib64/libQt5Core.so.5
#8  0x00007f247b4143e5 in QQmlThreadPrivate::run() () at /lib64/libQt5Qml.so.5
#9  0x00007f24771c045e in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#10 0x00007f2475070555 in start_thread () at /lib64/libpthread.so.0
#11 0x00007f24765c1f3d in clone () at /lib64/libc.so.6

Thread 22 (Thread 0x7f243de7c700 (LWP 18447)):
#0  0x00007f24773eea22 in postEventSourcePrepare(_GSource*, int*) () at /lib64/libQt5Core.so.5
#1  0x00007f2471b8198d in g_main_context_prepare () at /lib64/libglib-2.0.so.0
#2  0x00007f2471b8231b in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#3  0x00007f2471b824fc in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#4  0x00007f24773ef4eb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#5  0x00007f247739627a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#6  0x00007f24771bb494 in QThread::exec() () at /lib64/libQt5Core.so.5
#7  0x00007f247b4143e5 in QQmlThreadPrivate::run() () at /lib64/libQt5Qml.so.5
#8  0x00007f24771c045e in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#9  0x00007f2475070555 in start_thread () at /lib64/libpthread.so.0
#10 0x00007f24765c1f3d in clone () at /lib64/libc.so.6

Thread 21 (Thread 0x7f243cd79700 (LWP 18448)):
#0  0x00007f247e5375b5 in __tls_get_addr () at /lib64/ld-linux-x86-64.so.2
#1  0x00007f24771bf3a2 in QThreadData::current(bool) () at /lib64/libQt5Core.so.5
#2  0x00007f24773eec11 in postEventSourceCheck(_GSource*) () at /lib64/libQt5Core.so.5
#3  0x00007f2471b81e31 in g_main_context_check () at /lib64/libglib-2.0.so.0
#4  0x00007f2471b82390 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#5  0x00007f2471b824fc in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#6  0x00007f24773ef4eb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#7  0x00007f247739627a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#8  0x00007f24771bb494 in QThread::exec() () at /lib64/libQt5Core.so.5
#9  0x00007f247b4143e5 in QQmlThreadPrivate::run() () at /lib64/libQt5Qml.so.5
#10 0x00007f24771c045e in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#11 0x00007f2475070555 in start_thread () at /lib64/libpthread.so.0
#12 0x00007f24765c1f3d in clone () at /lib64/libc.so.6

Thread 20 (Thread 0x7f242b5e0700 (LWP 18449)):
#0  0x00007f24765b22ed in read () at /lib64/libc.so.6
#1  0x00007f2471bc5d90 in g_wakeup_acknowledge () at /lib64/libglib-2.0.so.0
#2  0x00007f2471b81ee4 in g_main_context_check () at /lib64/libglib-2.0.so.0
#3  0x00007f2471b82390 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#4  0x00007f2471b824fc in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#5  0x00007f24773ef4eb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#6  0x00007f247739627a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#7  0x00007f24771bb494 in QThread::exec() () at /lib64/libQt5Core.so.5
#8  0x00007f247b4143e5 in QQmlThreadPrivate::run() () at /lib64/libQt5Qml.so.5
#9  0x00007f24771c045e in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#10 0x00007f2475070555 in start_thread () at /lib64/libpthread.so.0
#11 0x00007f24765c1f3d in clone () at /lib64/libc.so.6

Thread 19 (Thread 0x7f242a327700 (LWP 18450)):
#0  0x00007f2471b81c70 in g_main_context_query () at /lib64/libglib-2.0.so.0
#1  0x00007f2471b82367 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#2  0x00007f2471b824fc in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#3  0x00007f24773ef4eb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#4  0x00007f247739627a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#5  0x00007f24771bb494 in QThread::exec() () at /lib64/libQt5Core.so.5
#6  0x00007f247b4143e5 in QQmlThreadPrivate::run() () at /lib64/libQt5Qml.so.5
#7  0x00007f24771c045e in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#8  0x00007f2475070555 in start_thread () at /lib64/libpthread.so.0
#9  0x00007f24765c1f3d in clone () at /lib64/libc.so.6

Thread 18 (Thread 0x7f2429216700 (LWP 18451)):
#0  0x00007f2475075530 in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f247ddc36d4 in QTWTF::TCMalloc_PageHeap::scavengerThread() () at /lib64/libQt5Script.so.5
#2  0x00007f247ddc3719 in  () at /lib64/libQt5Script.so.5
#3  0x00007f2475070555 in start_thread () at /lib64/libpthread.so.0
#4  0x00007f24765c1f3d in clone () at /lib64/libc.so.6

Thread 17 (Thread 0x7f24288fd700 (LWP 18452)):
#0  0x00007f2471b8230e in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#1  0x00007f2471b824fc in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#2  0x00007f24773ef4eb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#3  0x00007f247739627a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#4  0x00007f24771bb494 in QThread::exec() () at /lib64/libQt5Core.so.5
#5  0x00007f247b4143e5 in QQmlThreadPrivate::run() () at /lib64/libQt5Qml.so.5
#6  0x00007f24771c045e in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#7  0x00007f2475070555 in start_thread () at /lib64/libpthread.so.0
#8  0x00007f24765c1f3d in clone () at /lib64/libc.so.6

Thread 16 (Thread 0x7f2396d28700 (LWP 18453)):
#0  0x00007f247727064e in qt_gettime() () at /lib64/libQt5Core.so.5
#1  0x00007f24773ecf79 in QTimerInfoList::updateCurrentTime() () at /lib64/libQt5Core.so.5
#2  0x00007f24773ed4e5 in QTimerInfoList::timerWait(timespec&) () at /lib64/libQt5Core.so.5
#3  0x00007f24773ee8ce in timerSourcePrepare(_GSource*, int*) () at /lib64/libQt5Core.so.5
#4  0x00007f2471b8198d in g_main_context_prepare () at /lib64/libglib-2.0.so.0
#5  0x00007f2471b8231b in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#6  0x00007f2471b824fc in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#7  0x00007f24773ef4eb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#8  0x00007f247739627a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#9  0x00007f24771bb494 in QThread::exec() () at /lib64/libQt5Core.so.5
#10 0x00007f247b4143e5 in QQmlThreadPrivate::run() () at /lib64/libQt5Qml.so.5
#11 0x00007f24771c045e in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#12 0x00007f2475070555 in start_thread () at /lib64/libpthread.so.0
#13 0x00007f24765c1f3d in clone () at /lib64/libc.so.6

Thread 15 (Thread 0x7f238ffff700 (LWP 18455)):
#0  0x00007f24765b666d in poll () at /lib64/libc.so.6
#1  0x00007f2471b823ec in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#2  0x00007f2471b824fc in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#3  0x00007f24773ef4eb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#4  0x00007f247739627a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#5  0x00007f24771bb494 in QThread::exec() () at /lib64/libQt5Core.so.5
#6  0x00007f247b4143e5 in QQmlThreadPrivate::run() () at /lib64/libQt5Qml.so.5
#7  0x00007f24771c045e in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#8  0x00007f2475070555 in start_thread () at /lib64/libpthread.so.0
#9  0x00007f24765c1f3d in clone () at /lib64/libc.so.6

Thread 14 (Thread 0x7f238edf8700 (LWP 18456)):
#0  0x00007f2471bc71f9 in g_mutex_lock () at /lib64/libglib-2.0.so.0
#1  0x00007f2471b824e8 in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#2  0x00007f24773ef4eb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#3  0x00007f247739627a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#4  0x00007f24771bb494 in QThread::exec() () at /lib64/libQt5Core.so.5
#5  0x00007f247b85b846 in QQuickPixmapReader::run() () at /lib64/libQt5Quick.so.5
#6  0x00007f24771c045e in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#7  0x00007f2475070555 in start_thread () at /lib64/libpthread.so.0
#8  0x00007f24765c1f3d in clone () at /lib64/libc.so.6

Thread 13 (Thread 0x7f238e5f7700 (LWP 18457)):
#0  0x00007f2471b7f494 in g_source_iter_next () at /lib64/libglib-2.0.so.0
#1  0x00007f2471b8192b in g_main_context_prepare () at /lib64/libglib-2.0.so.0
#2  0x00007f2471b8231b in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#3  0x00007f2471b824fc in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#4  0x00007f24773ef4eb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#5  0x00007f247739627a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#6  0x00007f24771bb494 in QThread::exec() () at /lib64/libQt5Core.so.5
#7  0x00007f247b85b846 in QQuickPixmapReader::run() () at /lib64/libQt5Quick.so.5
#8  0x00007f24771c045e in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#9  0x00007f2475070555 in start_thread () at /lib64/libpthread.so.0
#10 0x00007f24765c1f3d in clone () at /lib64/libc.so.6

Thread 12 (Thread 0x7f238ddf6700 (LWP 18458)):
#0  0x00007f2471bc7214 in g_mutex_unlock () at /lib64/libglib-2.0.so.0
#1  0x00007f2471b81f99 in g_main_context_dispatch () at /lib64/libglib-2.0.so.0
#2  0x00007f2471b82450 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#3  0x00007f2471b824fc in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#4  0x00007f24773ef4eb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#5  0x00007f247739627a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#6  0x00007f24771bb494 in QThread::exec() () at /lib64/libQt5Core.so.5
#7  0x00007f247b4143e5 in QQmlThreadPrivate::run() () at /lib64/libQt5Qml.so.5
#8  0x00007f24771c045e in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#9  0x00007f2475070555 in start_thread () at /lib64/libpthread.so.0
#10 0x00007f24765c1f3d in clone () at /lib64/libc.so.6

Thread 11 (Thread 0x7f2373fff700 (LWP 18459)):
#0  0x00007f24765b666d in poll () at /lib64/libc.so.6
#1  0x00007f2471b823ec in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#2  0x00007f2471b824fc in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#3  0x00007f24773ef4eb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#4  0x00007f247739627a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#5  0x00007f24771bb494 in QThread::exec() () at /lib64/libQt5Core.so.5
#6  0x00007f247b4143e5 in QQmlThreadPrivate::run() () at /lib64/libQt5Qml.so.5
#7  0x00007f24771c045e in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#8  0x00007f2475070555 in start_thread () at /lib64/libpthread.so.0
#9  0x00007f24765c1f3d in clone () at /lib64/libc.so.6

Thread 10 (Thread 0x7f2372fde700 (LWP 18460)):
#0  0x00007f2471bc71f9 in g_mutex_lock () at /lib64/libglib-2.0.so.0
#1  0x00007f2471b823ae in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#2  0x00007f2471b824fc in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#3  0x00007f24773ef4eb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#4  0x00007f247739627a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#5  0x00007f24771bb494 in QThread::exec() () at /lib64/libQt5Core.so.5
#6  0x00007f247b4143e5 in QQmlThreadPrivate::run() () at /lib64/libQt5Qml.so.5
#7  0x00007f24771c045e in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#8  0x00007f2475070555 in start_thread () at /lib64/libpthread.so.0
#9  0x00007f24765c1f3d in clone () at /lib64/libc.so.6

Thread 9 (Thread 0x7f2371edd700 (LWP 18461)):
#0  0x00007f247e5375a9 in __tls_get_addr () at /lib64/ld-linux-x86-64.so.2
#1  0x00007f24771bf3a2 in QThreadData::current(bool) () at /lib64/libQt5Core.so.5
#2  0x00007f24773eea4a in postEventSourcePrepare(_GSource*, int*) () at /lib64/libQt5Core.so.5
#3  0x00007f2471b8198d in g_main_context_prepare () at /lib64/libglib-2.0.so.0
#4  0x00007f2471b8231b in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#5  0x00007f2471b824fc in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#6  0x00007f24773ef4eb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#7  0x00007f247739627a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#8  0x00007f24771bb494 in QThread::exec() () at /lib64/libQt5Core.so.5
#9  0x00007f247b4143e5 in QQmlThreadPrivate::run() () at /lib64/libQt5Qml.so.5
#10 0x00007f24771c045e in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#11 0x00007f2475070555 in start_thread () at /lib64/libpthread.so.0
#12 0x00007f24765c1f3d in clone () at /lib64/libc.so.6

Thread 8 (Thread 0x7f2370ddc700 (LWP 18462)):
#0  0x00007f2471bc71f9 in g_mutex_lock () at /lib64/libglib-2.0.so.0
#1  0x00007f2471b81999 in g_main_context_prepare () at /lib64/libglib-2.0.so.0
#2  0x00007f2471b8231b in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#3  0x00007f2471b824fc in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#4  0x00007f24773ef4eb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#5  0x00007f247739627a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#6  0x00007f24771bb494 in QThread::exec() () at /lib64/libQt5Core.so.5
#7  0x00007f247b4143e5 in QQmlThreadPrivate::run() () at /lib64/libQt5Qml.so.5
#8  0x00007f24771c045e in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#9  0x00007f2475070555 in start_thread () at /lib64/libpthread.so.0
#10 0x00007f24765c1f3d in clone () at /lib64/libc.so.6

Thread 7 (Thread 0x7f23637ff700 (LWP 18463)):
#0  0x00007f2471bc7214 in g_mutex_unlock () at /lib64/libglib-2.0.so.0
#1  0x00007f2471b823e1 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#2  0x00007f2471b824fc in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#3  0x00007f24773ef4eb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#4  0x00007f247739627a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#5  0x00007f24771bb494 in QThread::exec() () at /lib64/libQt5Core.so.5
#6  0x00007f247b4143e5 in QQmlThreadPrivate::run() () at /lib64/libQt5Qml.so.5
#7  0x00007f24771c045e in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#8  0x00007f2475070555 in start_thread () at /lib64/libpthread.so.0
#9  0x00007f24765c1f3d in clone () at /lib64/libc.so.6

Thread 6 (Thread 0x7f23627fe700 (LWP 18464)):
#0  0x00007f2475076340 in pthread_getspecific () at /lib64/libpthread.so.0
#1  0x00007f2471ba97e0 in g_thread_self () at /lib64/libglib-2.0.so.0
#2  0x00007f2471b824ed in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#3  0x00007f24773ef4eb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#4  0x00007f247739627a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#5  0x00007f24771bb494 in QThread::exec() () at /lib64/libQt5Core.so.5
#6  0x00007f247b4143e5 in QQmlThreadPrivate::run() () at /lib64/libQt5Qml.so.5
#7  0x00007f24771c045e in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#8  0x00007f2475070555 in start_thread () at /lib64/libpthread.so.0
#9  0x00007f24765c1f3d in clone () at /lib64/libc.so.6

Thread 5 (Thread 0x7f23617fd700 (LWP 18465)):
#0  0x00007f24765b6647 in poll () at /lib64/libc.so.6
#1  0x00007f2471b823ec in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#2  0x00007f2471b824fc in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#3  0x00007f24773ef4eb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#4  0x00007f247739627a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#5  0x00007f24771bb494 in QThread::exec() () at /lib64/libQt5Core.so.5
#6  0x00007f247b4143e5 in QQmlThreadPrivate::run() () at /lib64/libQt5Qml.so.5
#7  0x00007f24771c045e in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#8  0x00007f2475070555 in start_thread () at /lib64/libpthread.so.0
#9  0x00007f24765c1f3d in clone () at /lib64/libc.so.6

Thread 4 (Thread 0x7f234ffff700 (LWP 18466)):
#0  0x00007f24765b666d in poll () at /lib64/libc.so.6
#1  0x00007f2471b823ec in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#2  0x00007f2471b824fc in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#3  0x00007f24773ef4eb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#4  0x00007f247739627a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#5  0x00007f24771bb494 in QThread::exec() () at /lib64/libQt5Core.so.5
#6  0x00007f247b4143e5 in QQmlThreadPrivate::run() () at /lib64/libQt5Qml.so.5
#7  0x00007f24771c045e in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#8  0x00007f2475070555 in start_thread () at /lib64/libpthread.so.0
#9  0x00007f24765c1f3d in clone () at /lib64/libc.so.6

Thread 3 (Thread 0x7f234de82700 (LWP 18467)):
#0  0x00007f24765b666d in poll () at /lib64/libc.so.6
#1  0x00007f2471b823ec in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#2  0x00007f2471b824fc in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#3  0x00007f24773ef4eb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#4  0x00007f247739627a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#5  0x00007f24771bb494 in QThread::exec() () at /lib64/libQt5Core.so.5
#6  0x00007f247b4143e5 in QQmlThreadPrivate::run() () at /lib64/libQt5Qml.so.5
#7  0x00007f24771c045e in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#8  0x00007f2475070555 in start_thread () at /lib64/libpthread.so.0
#9  0x00007f24765c1f3d in clone () at /lib64/libc.so.6

Thread 2 (Thread 0x7f234cd7f700 (LWP 18468)):
#0  0x00007f24765b666d in poll () at /lib64/libc.so.6
#1  0x00007f2471b823ec in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#2  0x00007f2471b824fc in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#3  0x00007f24773ef4eb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#4  0x00007f247739627a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#5  0x00007f24771bb494 in QThread::exec() () at /lib64/libQt5Core.so.5
#6  0x00007f247b4143e5 in QQmlThreadPrivate::run() () at /lib64/libQt5Qml.so.5
#7  0x00007f24771c045e in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#8  0x00007f2475070555 in start_thread () at /lib64/libpthread.so.0
#9  0x00007f24765c1f3d in clone () at /lib64/libc.so.6

Thread 1 (Thread 0x7f247e6a5900 (LWP 18436)):
[KCrash Handler]
#5  0x00007f24764f4a98 in raise () at /lib64/libc.so.6
#6  0x00007f24764f672a in abort () at /lib64/libc.so.6
#7  0x00007f2476e2e82d in __gnu_cxx::__verbose_terminate_handler() () at /lib64/libstdc++.so.6
#8  0x00007f2476e2c676 in  () at /lib64/libstdc++.so.6
#9  0x00007f2476e2c6c1 in  () at /lib64/libstdc++.so.6
#10 0x00007f2476e2d20f in  () at /lib64/libstdc++.so.6
#11 0x00007f24778a333a in QPlatformScreen::physicalSize() const () at /lib64/libQt5Gui.so.5
#12 0x00007f24778daf32 in QScreen::physicalSize() const () at /lib64/libQt5Gui.so.5
#13 0x00007f24778dafe9 in QScreen::physicalDotsPerInch() const () at /lib64/libQt5Gui.so.5
#14 0x00007f247b9cf1b3 in QQuickScreenAttached::screenChanged(QScreen*) () at /lib64/libQt5Quick.so.5
#15 0x00007f24773c7f66 in QMetaObject::activate(QObject*, int, int, void**) () at /lib64/libQt5Core.so.5
#16 0x00007f24778b8e8f in QWindow::screenChanged(QScreen*) () at /lib64/libQt5Gui.so.5
#17 0x00007f24778b9d85 in QWindowPrivate::emitScreenChangedRecursion(QScreen*) () at /lib64/libQt5Gui.so.5
#18 0x00007f24778bcda3 in QWindowPrivate::setTopLevelScreen(QScreen*, bool) () at /lib64/libQt5Gui.so.5
#19 0x00007f24778bcf35 in QWindow::screenDestroyed(QObject*) () at /lib64/libQt5Gui.so.5
#20 0x00007f24773c7dff in QMetaObject::activate(QObject*, int, int, void**) () at /lib64/libQt5Core.so.5
#21 0x00007f24773c880f in QObject::destroyed(QObject*) () at /lib64/libQt5Core.so.5
#22 0x00007f24773d037a in QObject::~QObject() () at /lib64/libQt5Core.so.5
#23 0x00007f2477c24e67 in QScreen::~QScreen() () at /lib64/libQt5Gui.so.5
#24 0x00007f24778a3867 in QPlatformScreen::~QPlatformScreen() () at /lib64/libQt5Gui.so.5
#25 0x00007f2460f9e319 in QXcbScreen::~QXcbScreen() () at /usr/lib64/qt5/plugins/platforms/libqxcb.so
#26 0x00007f2460f91309 in QXcbConnection::updateScreens() () at /usr/lib64/qt5/plugins/platforms/libqxcb.so
#27 0x00007f2460f92206 in QXcbConnection::handleXcbEvent(xcb_generic_event_t*) () at /usr/lib64/qt5/plugins/platforms/libqxcb.so
#28 0x00007f2460f93053 in QXcbConnection::processXcbEvents() () at /usr/lib64/qt5/plugins/platforms/libqxcb.so
#29 0x00007f24773c93f1 in QObject::event(QEvent*) () at /lib64/libQt5Core.so.5
#30 0x00007f2478918dec in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /lib64/libQt5Widgets.so.5
#31 0x00007f247891e370 in QApplication::notify(QObject*, QEvent*) () at /lib64/libQt5Widgets.so.5
#32 0x00007f24773987fb in QCoreApplication::notifyInternal(QObject*, QEvent*) () at /lib64/libQt5Core.so.5
#33 0x00007f247739af27 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /lib64/libQt5Core.so.5
#34 0x00007f24773ef0c3 in postEventSourceDispatch(_GSource*, int (*)(void*), void*) () at /lib64/libQt5Core.so.5
#35 0x00007f2471b820ba in g_main_context_dispatch () at /lib64/libglib-2.0.so.0
#36 0x00007f2471b82450 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#37 0x00007f2471b824fc in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#38 0x00007f24773ef4cf in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#39 0x00007f247739627a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#40 0x00007f247739dcdc in QCoreApplication::exec() () at /lib64/libQt5Core.so.5
#41 0x000000000042e59c in main ()

Reported using DrKonqi
Comment 1 Marcelo Ricardo Leitner 2015-04-23 16:55:25 UTC 
And after that, the taskbar is placed on the wrong monitor.
Comment 2 David Edmundson 2015-04-23 18:40:46 UTC 
>#7  0x00007f2476e2e82d in __gnu_cxx::__verbose_terminate_handler() () at /lib64/libstdc++.so.6

same bug again

*** This bug has been marked as a duplicate of bug 345544 ***