Bug 350537

Summary: plasma crash after switching back from a virtual console
Product: [Plasma] plasmashell Reporter: bri <ianniello>
Component: generalAssignee: David Edmundson <kde>
Status: RESOLVED DUPLICATE    
Severity: crash CC: bhush94, piedro.kulman, plasma-bugs
Priority: NOR Keywords: drkonqi
Version: 5.3.2   
Target Milestone: 1.0   
Platform: openSUSE   
OS: Linux   
Latest Commit: Version Fixed In:
Sentry Crash Report:

Description bri 2015-07-23 06:30:32 UTC 
Application: plasmashell (5.3.2)

Qt Version: 5.4.2
Operating System: Linux 4.1.1-1-desktop x86_64
Distribution: "openSUSE 20150714 (Tumbleweed) (x86_64)"

-- Information about the crash:
I used the ctrl+alt+f1 key to switch to the first virtual console, and logged in as root. Then I switched to the second virtual console and did nothing. I switched back to  the graphic plasma screeen - and I got the crash alert.

-- Backtrace:
Application: Plasma (plasmashell), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
[Current thread is 1 (Thread 0x7fd76d525880 (LWP 2206))]

Thread 18 (Thread 0x7fd756fcf700 (LWP 2207)):
#0  0x00007fd766fcffbd in poll () at /lib64/libc.so.6
#1  0x00007fd76be00332 in  () at /usr/lib64/libxcb.so.1
#2  0x00007fd76be01e17 in xcb_wait_for_event () at /usr/lib64/libxcb.so.1
#3  0x00007fd7593577f9 in  () at /usr/lib64/qt5/plugins/platforms/libqxcb.so
#4  0x00007fd7676bceaf in  () at /usr/lib64/libQt5Core.so.5
#5  0x00007fd7665c3324 in start_thread () at /lib64/libpthread.so.0
#6  0x00007fd766fd870d in clone () at /lib64/libc.so.6

Thread 17 (Thread 0x7fd754889700 (LWP 2225)):
#0  0x00007ffd2afd7c86 in clock_gettime ()
#1  0x00007fd766fe528d in clock_gettime () at /lib64/libc.so.6
#2  0x00007fd767769736 in  () at /usr/lib64/libQt5Core.so.5
#3  0x00007fd7678def39 in QTimerInfoList::updateCurrentTime() () at /usr/lib64/libQt5Core.so.5
#4  0x00007fd7678df445 in QTimerInfoList::timerWait(timespec&) () at /usr/lib64/libQt5Core.so.5
#5  0x00007fd7678e07de in  () at /usr/lib64/libQt5Core.so.5
#6  0x00007fd7634d64bd in g_main_context_prepare () at /usr/lib64/libglib-2.0.so.0
#7  0x00007fd7634d6dc3 in  () at /usr/lib64/libglib-2.0.so.0
#8  0x00007fd7634d6f9c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#9  0x00007fd7678e137b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#10 0x00007fd76788a5ea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#11 0x00007fd7676b813c in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#12 0x00007fd76a8e4d05 in  () at /usr/lib64/libQt5Qml.so.5
#13 0x00007fd7676bceaf in  () at /usr/lib64/libQt5Core.so.5
#14 0x00007fd7665c3324 in start_thread () at /lib64/libpthread.so.0
#15 0x00007fd766fd870d in clone () at /lib64/libc.so.6

Thread 16 (Thread 0x7fd7431f0700 (LWP 2241)):
#0  0x00007fd766fcffbd in poll () at /lib64/libc.so.6
#1  0x00007fd7634d6e94 in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007fd7634d6f9c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#3  0x00007fd7678e137b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#4  0x00007fd76788a5ea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007fd7676b813c in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#6  0x00007fd76a8e4d05 in  () at /usr/lib64/libQt5Qml.so.5
#7  0x00007fd7676bceaf in  () at /usr/lib64/libQt5Core.so.5
#8  0x00007fd7665c3324 in start_thread () at /lib64/libpthread.so.0
#9  0x00007fd766fd870d in clone () at /lib64/libc.so.6

Thread 15 (Thread 0x7fd74119f700 (LWP 2253)):
#0  0x00007ffd2afd7c86 in clock_gettime ()
#1  0x00007fd766fe528d in clock_gettime () at /lib64/libc.so.6
#2  0x00007fd767769736 in  () at /usr/lib64/libQt5Core.so.5
#3  0x00007fd7678def39 in QTimerInfoList::updateCurrentTime() () at /usr/lib64/libQt5Core.so.5
#4  0x00007fd7678df445 in QTimerInfoList::timerWait(timespec&) () at /usr/lib64/libQt5Core.so.5
#5  0x00007fd7678e07de in  () at /usr/lib64/libQt5Core.so.5
#6  0x00007fd7634d64bd in g_main_context_prepare () at /usr/lib64/libglib-2.0.so.0
#7  0x00007fd7634d6dc3 in  () at /usr/lib64/libglib-2.0.so.0
#8  0x00007fd7634d6f9c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#9  0x00007fd7678e137b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#10 0x00007fd76788a5ea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#11 0x00007fd7676b813c in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#12 0x00007fd76a8e4d05 in  () at /usr/lib64/libQt5Qml.so.5
#13 0x00007fd7676bceaf in  () at /usr/lib64/libQt5Core.so.5
#14 0x00007fd7665c3324 in start_thread () at /lib64/libpthread.so.0
#15 0x00007fd766fd870d in clone () at /lib64/libc.so.6

Thread 14 (Thread 0x7fd733fff700 (LWP 2255)):
#0  0x00007fd7634d64b0 in g_main_context_prepare () at /usr/lib64/libglib-2.0.so.0
#1  0x00007fd7634d6dc3 in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007fd7634d6f9c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#3  0x00007fd7678e137b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#4  0x00007fd76788a5ea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007fd7676b813c in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#6  0x00007fd76a8e4d05 in  () at /usr/lib64/libQt5Qml.so.5
#7  0x00007fd7676bceaf in  () at /usr/lib64/libQt5Core.so.5
#8  0x00007fd7665c3324 in start_thread () at /lib64/libpthread.so.0
#9  0x00007fd766fd870d in clone () at /lib64/libc.so.6

Thread 13 (Thread 0x7fd732ffe700 (LWP 2261)):
#0  0x00007ffd2afd7c86 in clock_gettime ()
#1  0x00007fd766fe528d in clock_gettime () at /lib64/libc.so.6
#2  0x00007fd767769736 in  () at /usr/lib64/libQt5Core.so.5
#3  0x00007fd7678def39 in QTimerInfoList::updateCurrentTime() () at /usr/lib64/libQt5Core.so.5
#4  0x00007fd7678df445 in QTimerInfoList::timerWait(timespec&) () at /usr/lib64/libQt5Core.so.5
#5  0x00007fd7678e07de in  () at /usr/lib64/libQt5Core.so.5
#6  0x00007fd7634d64bd in g_main_context_prepare () at /usr/lib64/libglib-2.0.so.0
#7  0x00007fd7634d6dc3 in  () at /usr/lib64/libglib-2.0.so.0
#8  0x00007fd7634d6f9c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#9  0x00007fd7678e137b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#10 0x00007fd76788a5ea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#11 0x00007fd7676b813c in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#12 0x00007fd76a8e4d05 in  () at /usr/lib64/libQt5Qml.so.5
#13 0x00007fd7676bceaf in  () at /usr/lib64/libQt5Core.so.5
#14 0x00007fd7665c3324 in start_thread () at /lib64/libpthread.so.0
#15 0x00007fd766fd870d in clone () at /lib64/libc.so.6

Thread 12 (Thread 0x7fd731efd700 (LWP 2262)):
#0  0x00007ffd2afd7c86 in clock_gettime ()
#1  0x00007fd766fe528d in clock_gettime () at /lib64/libc.so.6
#2  0x00007fd767769736 in  () at /usr/lib64/libQt5Core.so.5
#3  0x00007fd7678def39 in QTimerInfoList::updateCurrentTime() () at /usr/lib64/libQt5Core.so.5
#4  0x00007fd7678df445 in QTimerInfoList::timerWait(timespec&) () at /usr/lib64/libQt5Core.so.5
#5  0x00007fd7678e07de in  () at /usr/lib64/libQt5Core.so.5
#6  0x00007fd7634d64bd in g_main_context_prepare () at /usr/lib64/libglib-2.0.so.0
#7  0x00007fd7634d6dc3 in  () at /usr/lib64/libglib-2.0.so.0
#8  0x00007fd7634d6f9c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#9  0x00007fd7678e137b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#10 0x00007fd76788a5ea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#11 0x00007fd7676b813c in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#12 0x00007fd76a8e4d05 in  () at /usr/lib64/libQt5Qml.so.5
#13 0x00007fd7676bceaf in  () at /usr/lib64/libQt5Core.so.5
#14 0x00007fd7665c3324 in start_thread () at /lib64/libpthread.so.0
#15 0x00007fd766fd870d in clone () at /lib64/libc.so.6

Thread 11 (Thread 0x7fd723fff700 (LWP 2263)):
#0  0x00007ffd2afd7c86 in clock_gettime ()
#1  0x00007fd766fe528d in clock_gettime () at /lib64/libc.so.6
#2  0x00007fd767769736 in  () at /usr/lib64/libQt5Core.so.5
#3  0x00007fd7678def39 in QTimerInfoList::updateCurrentTime() () at /usr/lib64/libQt5Core.so.5
#4  0x00007fd7678df445 in QTimerInfoList::timerWait(timespec&) () at /usr/lib64/libQt5Core.so.5
#5  0x00007fd7678e07de in  () at /usr/lib64/libQt5Core.so.5
#6  0x00007fd7634d64bd in g_main_context_prepare () at /usr/lib64/libglib-2.0.so.0
#7  0x00007fd7634d6dc3 in  () at /usr/lib64/libglib-2.0.so.0
#8  0x00007fd7634d6f9c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#9  0x00007fd7678e137b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#10 0x00007fd76788a5ea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#11 0x00007fd7676b813c in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#12 0x00007fd76a8e4d05 in  () at /usr/lib64/libQt5Qml.so.5
#13 0x00007fd7676bceaf in  () at /usr/lib64/libQt5Core.so.5
#14 0x00007fd7665c3324 in start_thread () at /lib64/libpthread.so.0
#15 0x00007fd766fd870d in clone () at /lib64/libc.so.6

Thread 10 (Thread 0x7fd722ffe700 (LWP 2264)):
#0  0x00007ffd2afd7c86 in clock_gettime ()
#1  0x00007fd766fe528d in clock_gettime () at /lib64/libc.so.6
#2  0x00007fd767769736 in  () at /usr/lib64/libQt5Core.so.5
#3  0x00007fd7678def39 in QTimerInfoList::updateCurrentTime() () at /usr/lib64/libQt5Core.so.5
#4  0x00007fd7678df445 in QTimerInfoList::timerWait(timespec&) () at /usr/lib64/libQt5Core.so.5
#5  0x00007fd7678e07de in  () at /usr/lib64/libQt5Core.so.5
#6  0x00007fd7634d64bd in g_main_context_prepare () at /usr/lib64/libglib-2.0.so.0
#7  0x00007fd7634d6dc3 in  () at /usr/lib64/libglib-2.0.so.0
#8  0x00007fd7634d6f9c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#9  0x00007fd7678e137b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#10 0x00007fd76788a5ea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#11 0x00007fd7676b813c in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#12 0x00007fd76a8e4d05 in  () at /usr/lib64/libQt5Qml.so.5
#13 0x00007fd7676bceaf in  () at /usr/lib64/libQt5Core.so.5
#14 0x00007fd7665c3324 in start_thread () at /lib64/libpthread.so.0
#15 0x00007fd766fd870d in clone () at /lib64/libc.so.6

Thread 9 (Thread 0x7fd721ffd700 (LWP 2265)):
#0  0x00007fd766fcffbd in poll () at /lib64/libc.so.6
#1  0x00007fd7634d6e94 in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007fd7634d6f9c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#3  0x00007fd7678e137b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#4  0x00007fd76788a5ea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007fd7676b813c in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#6  0x00007fd76a8e4d05 in  () at /usr/lib64/libQt5Qml.so.5
#7  0x00007fd7676bceaf in  () at /usr/lib64/libQt5Core.so.5
#8  0x00007fd7665c3324 in start_thread () at /lib64/libpthread.so.0
#9  0x00007fd766fd870d in clone () at /lib64/libc.so.6

Thread 8 (Thread 0x7fd720ffc700 (LWP 2267)):
#0  0x00007fd7665c893f in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007fd76cc0a7f4 in  () at /usr/lib64/libQt5Script.so.5
#2  0x00007fd76cc0a839 in  () at /usr/lib64/libQt5Script.so.5
#3  0x00007fd7665c3324 in start_thread () at /lib64/libpthread.so.0
#4  0x00007fd766fd870d in clone () at /lib64/libc.so.6

Thread 7 (Thread 0x7fd693fff700 (LWP 2268)):
#0  0x00007fd7634d6a6a in g_main_context_dispatch () at /usr/lib64/libglib-2.0.so.0
#1  0x00007fd7634d6ef8 in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007fd7634d6f9c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#3  0x00007fd7678e137b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#4  0x00007fd76788a5ea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007fd7676b813c in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#6  0x00007fd76a8e4d05 in  () at /usr/lib64/libQt5Qml.so.5
#7  0x00007fd7676bceaf in  () at /usr/lib64/libQt5Core.so.5
#8  0x00007fd7665c3324 in start_thread () at /lib64/libpthread.so.0
#9  0x00007fd766fd870d in clone () at /lib64/libc.so.6

Thread 6 (Thread 0x7fd68bfff700 (LWP 2323)):
#0  0x00007fd766fcffbd in poll () at /lib64/libc.so.6
#1  0x00007fd7634d6e94 in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007fd7634d6f9c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#3  0x00007fd7678e137b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#4  0x00007fd76788a5ea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007fd7676b813c in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#6  0x00007fd76a8e4d05 in  () at /usr/lib64/libQt5Qml.so.5
#7  0x00007fd7676bceaf in  () at /usr/lib64/libQt5Core.so.5
#8  0x00007fd7665c3324 in start_thread () at /lib64/libpthread.so.0
#9  0x00007fd766fd870d in clone () at /lib64/libc.so.6

Thread 5 (Thread 0x7fd68a091700 (LWP 2350)):
#0  0x00007fd766fe4c4f in __libc_enable_asynccancel () at /lib64/libc.so.6
#1  0x00007fd766fcffb2 in poll () at /lib64/libc.so.6
#2  0x00007fd7634d6e94 in  () at /usr/lib64/libglib-2.0.so.0
#3  0x00007fd7634d6f9c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#4  0x00007fd7678e137b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007fd76788a5ea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#6  0x00007fd7676b813c in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#7  0x00007fd76af50ae2 in  () at /usr/lib64/libQt5Quick.so.5
#8  0x00007fd7676bceaf in  () at /usr/lib64/libQt5Core.so.5
#9  0x00007fd7665c3324 in start_thread () at /lib64/libpthread.so.0
#10 0x00007fd766fd870d in clone () at /lib64/libc.so.6

Thread 4 (Thread 0x7fd682ccf700 (LWP 2388)):
#0  0x00007fd7634d416b in  () at /usr/lib64/libglib-2.0.so.0
#1  0x00007fd7634d6538 in g_main_context_prepare () at /usr/lib64/libglib-2.0.so.0
#2  0x00007fd7634d6dc3 in  () at /usr/lib64/libglib-2.0.so.0
#3  0x00007fd7634d6f9c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#4  0x00007fd7678e137b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007fd76788a5ea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#6  0x00007fd7676b813c in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#7  0x00007fd76a8e4d05 in  () at /usr/lib64/libQt5Qml.so.5
#8  0x00007fd7676bceaf in  () at /usr/lib64/libQt5Core.so.5
#9  0x00007fd7665c3324 in start_thread () at /lib64/libpthread.so.0
#10 0x00007fd766fd870d in clone () at /lib64/libc.so.6

Thread 3 (Thread 0x7fd674d3e700 (LWP 2435)):
#0  0x00007fd766fcffbd in poll () at /lib64/libc.so.6
#1  0x00007fd7634d6e94 in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007fd7634d6f9c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#3  0x00007fd7678e137b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#4  0x00007fd76788a5ea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007fd7676b813c in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#6  0x00007fd677242b77 in KCupsConnection::run() () at /usr/lib64/libkcupslib.so
#7  0x00007fd7676bceaf in  () at /usr/lib64/libQt5Core.so.5
#8  0x00007fd7665c3324 in start_thread () at /lib64/libpthread.so.0
#9  0x00007fd766fd870d in clone () at /lib64/libc.so.6

Thread 2 (Thread 0x7fd673d1c700 (LWP 2441)):
#0  0x00007ffd2afd7c86 in clock_gettime ()
#1  0x00007fd766fe528d in clock_gettime () at /lib64/libc.so.6
#2  0x00007fd767769736 in  () at /usr/lib64/libQt5Core.so.5
#3  0x00007fd7678def39 in QTimerInfoList::updateCurrentTime() () at /usr/lib64/libQt5Core.so.5
#4  0x00007fd7678df445 in QTimerInfoList::timerWait(timespec&) () at /usr/lib64/libQt5Core.so.5
#5  0x00007fd7678e07de in  () at /usr/lib64/libQt5Core.so.5
#6  0x00007fd7634d64bd in g_main_context_prepare () at /usr/lib64/libglib-2.0.so.0
#7  0x00007fd7634d6dc3 in  () at /usr/lib64/libglib-2.0.so.0
#8  0x00007fd7634d6f9c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#9  0x00007fd7678e137b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#10 0x00007fd76788a5ea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#11 0x00007fd7676b813c in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#12 0x00007fd76a8e4d05 in  () at /usr/lib64/libQt5Qml.so.5
#13 0x00007fd7676bceaf in  () at /usr/lib64/libQt5Core.so.5
#14 0x00007fd7665c3324 in start_thread () at /lib64/libpthread.so.0
#15 0x00007fd766fd870d in clone () at /lib64/libc.so.6

Thread 1 (Thread 0x7fd76d525880 (LWP 2206)):
[KCrash Handler]
#6  0x00007fd76a6d9108 in  () at /usr/lib64/libQt5Qml.so.5
#7  0x00007fd76a92700a in QQmlDelegateModel::_q_itemsChanged(int, int, QVector<int> const&) () at /usr/lib64/libQt5Qml.so.5
#8  0x00007fd76a94bcbc in  () at /usr/lib64/libQt5Qml.so.5
#9  0x00007fd76a94c075 in QQmlDelegateModel::qt_metacall(QMetaObject::Call, int, void**) () at /usr/lib64/libQt5Qml.so.5
#10 0x00007fd7678bc070 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib64/libQt5Core.so.5
#11 0x00007fd76792ec3c in QAbstractItemModel::dataChanged(QModelIndex const&, QModelIndex const&, QVector<int> const&) () at /usr/lib64/libQt5Core.so.5
#12 0x00007fd68945cd14 in  () at /usr/lib64/libtaskmanager.so.5
#13 0x00007fd68945de6f in  () at /usr/lib64/libtaskmanager.so.5
#14 0x00007fd7678bbeba in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib64/libQt5Core.so.5
#15 0x00007fd6894657f8 in TaskManager::AbstractGroupableItem::changed(QFlags<TaskManager::TaskChange>) () at /usr/lib64/libtaskmanager.so.5
#16 0x00007fd6894663bb in  () at /usr/lib64/libtaskmanager.so.5
#17 0x00007fd7678bbeba in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib64/libQt5Core.so.5
#18 0x00007fd689465928 in TaskManager::Task::changed(QFlags<TaskManager::TaskChange>) () at /usr/lib64/libtaskmanager.so.5
#19 0x00007fd68944776b in TaskManager::Task::setActive(bool) () at /usr/lib64/libtaskmanager.so.5
#20 0x00007fd68945953c in TaskManager::TaskManager::activeWindowChanged(unsigned long long) () at /usr/lib64/libtaskmanager.so.5
#21 0x00007fd68945b5f1 in  () at /usr/lib64/libtaskmanager.so.5
#22 0x00007fd7678bbeba in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib64/libQt5Core.so.5
#23 0x00007fd76a41c902 in KWindowSystem::activeWindowChanged(unsigned long long) () at /usr/lib64/libKF5WindowSystem.so.5
#24 0x00007fd76a4066cf in  () at /usr/lib64/libKF5WindowSystem.so.5
#25 0x00007fd76788982f in QAbstractEventDispatcher::filterNativeEvent(QByteArray const&, void*, long*) () at /usr/lib64/libQt5Core.so.5
#26 0x00007fd7593590ee in  () at /usr/lib64/qt5/plugins/platforms/libqxcb.so
#27 0x00007fd75935a10b in  () at /usr/lib64/qt5/plugins/platforms/libqxcb.so
#28 0x00007fd7678bcca9 in QObject::event(QEvent*) () at /usr/lib64/libQt5Core.so.5
#29 0x00007fd768bdd86c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#30 0x00007fd768be2b80 in QApplication::notify(QObject*, QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#31 0x00007fd76788cbf3 in QCoreApplication::notifyInternal(QObject*, QEvent*) () at /usr/lib64/libQt5Core.so.5
#32 0x00007fd76788ec37 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /usr/lib64/libQt5Core.so.5
#33 0x00007fd7678e0f53 in  () at /usr/lib64/libQt5Core.so.5
#34 0x00007fd7634d6cc7 in g_main_context_dispatch () at /usr/lib64/libglib-2.0.so.0
#35 0x00007fd7634d6ef8 in  () at /usr/lib64/libglib-2.0.so.0
#36 0x00007fd7634d6f9c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#37 0x00007fd7678e135f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#38 0x00007fd76788a5ea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#39 0x00007fd767891d6d in QCoreApplication::exec() () at /usr/lib64/libQt5Core.so.5
#40 0x0000000000432d0d in main ()

Reported using DrKonqi
Comment 1 David Edmundson 2015-07-25 14:02:45 UTC 

*** This bug has been marked as a duplicate of bug 342763 ***
Comment 2 piedro 2015-08-14 15:11:06 UTC 
Hello! 

I get the same crash everytime I switch to a virtual text console with CTRL+ALT+2 (or any other one) and then switch back to the plasma desktop it shows triangular distortions. I tried to take a screenshot but couldn't hit the right controls. 

Now I looked at the supposed duplicate and disabled windows list and apllication start notifications but still it crashes (or distorts) everytime switching back from virtual console. Also when trying to start a second graphical user session (well, atm the "switch user" in the KDE menu seems to have no effect at all... but before it crashed)... 

Since I have no idea how to fix or correctly report this I am asking here what to do. 
this is on ARCH fully upgraded including the latest NVIDIAdriver on  GTX 750 TI  card. 

I assume this has something to do with changing resolution because I also get this error when trying to start a wine session with different resolution... 

WHich is the correct bug report to add to? 
How can I fix it on my system? 

Thx for reading, 
piedro