Application: plasmashell (5.4.3)

Qt Version: 5.5.1
Operating System: Linux 4.1.13-5-default x86_64
Distribution: "openSUSE Leap 42.1 (x86_64)"

-- Information about the crash:
- What I was doing when the application crashed:

Connecting external monitor

- Unusual behavior I noticed:

Plasma crashes regularly. The task bar frequently stops working. The windows are often unable to snap to the task bar as well

Also it would not allow me to report bugs for months (could not find packages) and now will not let me select a bug report to attacht this to.

- Custom settings of the application:

Two monitors side by side with seperate desktops.

The crash can be reproduced sometimes.

-- Backtrace:
Application: Plasma (plasmashell), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f8d257bf7c0 (LWP 7887))]

Thread 18 (Thread 0x7f8d10599700 (LWP 7888)):
#0  0x00007f8d1ec96c1d in poll () from /lib64/libc.so.6
#1  0x00007f8d23c1d422 in ?? () from /usr/lib64/libxcb.so.1
#2  0x00007f8d23c1f00f in xcb_wait_for_event () from /usr/lib64/libxcb.so.1
#3  0x00007f8d12d523c9 in ?? () from /usr/lib64/libQt5XcbQpa.so.5
#4  0x00007f8d1f39532f in QThreadPrivate::start (arg=0x1a904c0) at thread/qthread_unix.cpp:331
#5  0x00007f8d1e4920a4 in start_thread () from /lib64/libpthread.so.0
#6  0x00007f8d1ec9f04d in clone () from /lib64/libc.so.6

Thread 17 (Thread 0x7f8d0d4f9700 (LWP 7914)):
#0  0x00007f8d1b34fcf9 in g_mutex_lock () from /usr/lib64/libglib-2.0.so.0
#1  0x00007f8d1b30d4b9 in g_main_context_prepare () from /usr/lib64/libglib-2.0.so.0
#2  0x00007f8d1b30dd80 in ?? () from /usr/lib64/libglib-2.0.so.0
#3  0x00007f8d1b30df7c in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#4  0x00007f8d1f5c7d8b in QEventDispatcherGlib::processEvents (this=0x7f8d000008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#5  0x00007f8d1f56ed53 in QEventLoop::exec (this=this@entry=0x7f8d0d4f8df0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007f8d1f39061a in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#7  0x00007f8d226b2df8 in ?? () from /usr/lib64/libQt5Qml.so.5
#8  0x00007f8d1f39532f in QThreadPrivate::start (arg=0x1b65a10) at thread/qthread_unix.cpp:331
#9  0x00007f8d1e4920a4 in start_thread () from /lib64/libpthread.so.0
#10 0x00007f8d1ec9f04d in clone () from /lib64/libc.so.6

Thread 16 (Thread 0x7f8cf99c9700 (LWP 7918)):
#0  0x00007f8d1ec92ced in read () from /lib64/libc.so.6
#1  0x00007f8d1b34eb60 in ?? () from /usr/lib64/libglib-2.0.so.0
#2  0x00007f8d1b30d999 in g_main_context_check () from /usr/lib64/libglib-2.0.so.0
#3  0x00007f8d1b30ddf8 in ?? () from /usr/lib64/libglib-2.0.so.0
#4  0x00007f8d1b30df7c in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#5  0x00007f8d1f5c7d8b in QEventDispatcherGlib::processEvents (this=0x7f8cf40008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#6  0x00007f8d1f56ed53 in QEventLoop::exec (this=this@entry=0x7f8cf99c8df0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#7  0x00007f8d1f39061a in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#8  0x00007f8d226b2df8 in ?? () from /usr/lib64/libQt5Qml.so.5
#9  0x00007f8d1f39532f in QThreadPrivate::start (arg=0x1dbebf0) at thread/qthread_unix.cpp:331
#10 0x00007f8d1e4920a4 in start_thread () from /lib64/libpthread.so.0
#11 0x00007f8d1ec9f04d in clone () from /lib64/libc.so.6

Thread 15 (Thread 0x7f8cf3dc9700 (LWP 7927)):
#0  0x00007f8d1ec96c1d in poll () from /lib64/libc.so.6
#1  0x00007f8d1b30de64 in ?? () from /usr/lib64/libglib-2.0.so.0
#2  0x00007f8d1b30df7c in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#3  0x00007f8d1f5c7d8b in QEventDispatcherGlib::processEvents (this=0x7f8cec0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#4  0x00007f8d1f56ed53 in QEventLoop::exec (this=this@entry=0x7f8cf3dc8df0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007f8d1f39061a in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#6  0x00007f8d226b2df8 in ?? () from /usr/lib64/libQt5Qml.so.5
#7  0x00007f8d1f39532f in QThreadPrivate::start (arg=0x206b920) at thread/qthread_unix.cpp:331
#8  0x00007f8d1e4920a4 in start_thread () from /lib64/libpthread.so.0
#9  0x00007f8d1ec9f04d in clone () from /lib64/libc.so.6

Thread 14 (Thread 0x7f8cf2579700 (LWP 7930)):
#0  0x00007f8d1e49605f in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f8d24e8d86b in ?? () from /usr/lib64/libQt5Script.so.5
#2  0x00007f8d24e8d899 in ?? () from /usr/lib64/libQt5Script.so.5
#3  0x00007f8d1e4920a4 in start_thread () from /lib64/libpthread.so.0
#4  0x00007f8d1ec9f04d in clone () from /lib64/libc.so.6

Thread 13 (Thread 0x7f8c6afc1700 (LWP 7948)):
#0  0x00007f8d1ec96c1d in poll () from /lib64/libc.so.6
#1  0x00007f8d1b30de64 in ?? () from /usr/lib64/libglib-2.0.so.0
#2  0x00007f8d1b30df7c in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#3  0x00007f8d1f5c7d8b in QEventDispatcherGlib::processEvents (this=0x7f8c640008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#4  0x00007f8d1f56ed53 in QEventLoop::exec (this=this@entry=0x7f8c6afc0db0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007f8d1f39061a in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#6  0x00007f8d23255282 in ?? () from /usr/lib64/libQt5Quick.so.5
#7  0x00007f8d1f39532f in QThreadPrivate::start (arg=0x24bf3f0) at thread/qthread_unix.cpp:331
#8  0x00007f8d1e4920a4 in start_thread () from /lib64/libpthread.so.0
#9  0x00007f8d1ec9f04d in clone () from /lib64/libc.so.6

Thread 12 (Thread 0x7f8c6a4ef700 (LWP 7951)):
#0  0x00007f8d1e49605f in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f8d1f39634b in wait (time=18446744073709551615, this=0x252d0c0) at thread/qwaitcondition_unix.cpp:136
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x264b860, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:208
#3  0x00007f8d232c825b in ?? () from /usr/lib64/libQt5Quick.so.5
#4  0x00007f8d232c86f3 in ?? () from /usr/lib64/libQt5Quick.so.5
#5  0x00007f8d1f39532f in QThreadPrivate::start (arg=0x264b7e0) at thread/qthread_unix.cpp:331
#6  0x00007f8d1e4920a4 in start_thread () from /lib64/libpthread.so.0
#7  0x00007f8d1ec9f04d in clone () from /lib64/libc.so.6

Thread 11 (Thread 0x7f8c50f51700 (LWP 8079)):
#0  0x00007f8d1ec92ced in read () from /lib64/libc.so.6
#1  0x00007f8d1b34eb60 in ?? () from /usr/lib64/libglib-2.0.so.0
#2  0x00007f8d1b30d999 in g_main_context_check () from /usr/lib64/libglib-2.0.so.0
#3  0x00007f8d1b30ddf8 in ?? () from /usr/lib64/libglib-2.0.so.0
#4  0x00007f8d1b30df7c in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#5  0x00007f8d1f5c7d8b in QEventDispatcherGlib::processEvents (this=0x7f8c4c0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#6  0x00007f8d1f56ed53 in QEventLoop::exec (this=this@entry=0x7f8c50f50dd0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#7  0x00007f8d1f39061a in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#8  0x00007f8c525c3cf7 in KCupsConnection::run() () from /usr/lib64/libkcupslib.so
#9  0x00007f8d1f39532f in QThreadPrivate::start (arg=0x33e1460) at thread/qthread_unix.cpp:331
#10 0x00007f8d1e4920a4 in start_thread () from /lib64/libpthread.so.0
#11 0x00007f8d1ec9f04d in clone () from /lib64/libc.so.6

Thread 10 (Thread 0x7f8c3fff9700 (LWP 8250)):
#0  0x00007f8d1e49605f in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f8d1f39634b in wait (time=18446744073709551615, this=0x3c447a0) at thread/qwaitcondition_unix.cpp:136
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x3c8da50, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:208
#3  0x00007f8d232c825b in ?? () from /usr/lib64/libQt5Quick.so.5
#4  0x00007f8d232c86f3 in ?? () from /usr/lib64/libQt5Quick.so.5
#5  0x00007f8d1f39532f in QThreadPrivate::start (arg=0x3c8d9d0) at thread/qthread_unix.cpp:331
#6  0x00007f8d1e4920a4 in start_thread () from /lib64/libpthread.so.0
#7  0x00007f8d1ec9f04d in clone () from /lib64/libc.so.6

Thread 9 (Thread 0x7f8c3e7f6700 (LWP 8261)):
#0  0x00007f8d1e49605f in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f8d1f39634b in wait (time=18446744073709551615, this=0x420bc30) at thread/qwaitcondition_unix.cpp:136
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x42d4200, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:208
#3  0x00007f8d232c825b in ?? () from /usr/lib64/libQt5Quick.so.5
#4  0x00007f8d232c86f3 in ?? () from /usr/lib64/libQt5Quick.so.5
#5  0x00007f8d1f39532f in QThreadPrivate::start (arg=0x42d4180) at thread/qthread_unix.cpp:331
#6  0x00007f8d1e4920a4 in start_thread () from /lib64/libpthread.so.0
#7  0x00007f8d1ec9f04d in clone () from /lib64/libc.so.6

Thread 8 (Thread 0x7f8c18b9d700 (LWP 8294)):
#0  0x00007f8d1e49605f in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f8d1f39634b in wait (time=18446744073709551615, this=0x4d899b0) at thread/qwaitcondition_unix.cpp:136
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x4a91ec0, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:208
#3  0x00007f8d232c825b in ?? () from /usr/lib64/libQt5Quick.so.5
#4  0x00007f8d232c86f3 in ?? () from /usr/lib64/libQt5Quick.so.5
#5  0x00007f8d1f39532f in QThreadPrivate::start (arg=0x4a91e40) at thread/qthread_unix.cpp:331
#6  0x00007f8d1e4920a4 in start_thread () from /lib64/libpthread.so.0
#7  0x00007f8d1ec9f04d in clone () from /lib64/libc.so.6

Thread 7 (Thread 0x7f8c1939e700 (LWP 8321)):
#0  0x00007f8d1e49605f in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f8d1f39634b in wait (time=18446744073709551615, this=0x4abc210) at thread/qwaitcondition_unix.cpp:136
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x4abc8a0, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:208
#3  0x00007f8d232c825b in ?? () from /usr/lib64/libQt5Quick.so.5
#4  0x00007f8d232c86f3 in ?? () from /usr/lib64/libQt5Quick.so.5
#5  0x00007f8d1f39532f in QThreadPrivate::start (arg=0x4abc820) at thread/qthread_unix.cpp:331
#6  0x00007f8d1e4920a4 in start_thread () from /lib64/libpthread.so.0
#7  0x00007f8d1ec9f04d in clone () from /lib64/libc.so.6

Thread 6 (Thread 0x7f8c1bdb1700 (LWP 8323)):
#0  0x00007f8d1e49605f in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f8d1f39634b in wait (time=18446744073709551615, this=0x3beed30) at thread/qwaitcondition_unix.cpp:136
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x54d5370, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:208
#3  0x00007f8d232c825b in ?? () from /usr/lib64/libQt5Quick.so.5
#4  0x00007f8d232c86f3 in ?? () from /usr/lib64/libQt5Quick.so.5
#5  0x00007f8d1f39532f in QThreadPrivate::start (arg=0x54d52f0) at thread/qthread_unix.cpp:331
#6  0x00007f8d1e4920a4 in start_thread () from /lib64/libpthread.so.0
#7  0x00007f8d1ec9f04d in clone () from /lib64/libc.so.6

Thread 5 (Thread 0x7f8c2cc49700 (LWP 8429)):
#0  0x00007f8d1e49605f in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f8d1f39634b in wait (time=18446744073709551615, this=0x5b97a30) at thread/qwaitcondition_unix.cpp:136
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x5ae9a00, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:208
#3  0x00007f8d232c825b in ?? () from /usr/lib64/libQt5Quick.so.5
#4  0x00007f8d232c86f3 in ?? () from /usr/lib64/libQt5Quick.so.5
#5  0x00007f8d1f39532f in QThreadPrivate::start (arg=0x5ae9980) at thread/qthread_unix.cpp:331
#6  0x00007f8d1e4920a4 in start_thread () from /lib64/libpthread.so.0
#7  0x00007f8d1ec9f04d in clone () from /lib64/libc.so.6

Thread 4 (Thread 0x7f8c1ffec700 (LWP 9097)):
#0  0x00007f8d1e49605f in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f8d1f39634b in wait (time=18446744073709551615, this=0x5a24780) at thread/qwaitcondition_unix.cpp:136
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x4db1fe0, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:208
#3  0x00007f8d232c825b in ?? () from /usr/lib64/libQt5Quick.so.5
#4  0x00007f8d232c86f3 in ?? () from /usr/lib64/libQt5Quick.so.5
#5  0x00007f8d1f39532f in QThreadPrivate::start (arg=0x4db1f60) at thread/qthread_unix.cpp:331
#6  0x00007f8d1e4920a4 in start_thread () from /lib64/libpthread.so.0
#7  0x00007f8d1ec9f04d in clone () from /lib64/libc.so.6

Thread 3 (Thread 0x7f8c688cb700 (LWP 27494)):
#0  0x00007f8d1e49605f in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f8d1f39634b in wait (time=18446744073709551615, this=0x4e9f4b0) at thread/qwaitcondition_unix.cpp:136
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x69922a0, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:208
#3  0x00007f8d232c825b in ?? () from /usr/lib64/libQt5Quick.so.5
#4  0x00007f8d232c86f3 in ?? () from /usr/lib64/libQt5Quick.so.5
#5  0x00007f8d1f39532f in QThreadPrivate::start (arg=0x6992220) at thread/qthread_unix.cpp:331
#6  0x00007f8d1e4920a4 in start_thread () from /lib64/libpthread.so.0
#7  0x00007f8d1ec9f04d in clone () from /lib64/libc.so.6

Thread 2 (Thread 0x7f8c4bfff700 (LWP 27500)):
#0  0x00007f8d1e49605f in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f8d1f39634b in wait (time=18446744073709551615, this=0x2102e90) at thread/qwaitcondition_unix.cpp:136
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x61a5f20, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:208
#3  0x00007f8d232c825b in ?? () from /usr/lib64/libQt5Quick.so.5
#4  0x00007f8d232c86f3 in ?? () from /usr/lib64/libQt5Quick.so.5
#5  0x00007f8d1f39532f in QThreadPrivate::start (arg=0x61a5ea0) at thread/qthread_unix.cpp:331
#6  0x00007f8d1e4920a4 in start_thread () from /lib64/libpthread.so.0
#7  0x00007f8d1ec9f04d in clone () from /lib64/libc.so.6

Thread 1 (Thread 0x7f8d257bf7c0 (LWP 7887)):
[KCrash Handler]
#6  Plasma::Applet::actions (this=this@entry=0x0) at /usr/src/debug/plasma-framework-5.16.0/src/plasma/applet.cpp:571
#7  0x0000000000456c22 in ShellCorona::addOutput (this=this@entry=0x1b52b10, output=...) at /usr/src/debug/plasma-workspace-5.4.3/shell/shellcorona.cpp:862
#8  0x0000000000456d2d in ShellCorona::outputEnabledChanged (this=0x1b52b10) at /usr/src/debug/plasma-workspace-5.4.3/shell/shellcorona.cpp:756
#9  0x00007f8d1f5a073f in call (a=0x7fff5391ae50, r=0x1b52b10, this=0x24c1130) at ../../src/corelib/kernel/qobject_impl.h:124
#10 QMetaObject::activate (sender=0x1b1a860, signalOffset=<optimized out>, local_signal_index=<optimized out>, argv=0x0) at kernel/qobject.cpp:3698
#11 0x00007f8d245fff42 in KScreen::Output::apply (this=0x1b1a860, other=...) at /usr/src/debug/libkscreen-5.4.3/src/output.cpp:516
#12 0x00007f8d245ee7b2 in KScreen::Config::apply (this=this@entry=0x1f9c800, other=...) at /usr/src/debug/libkscreen-5.4.3/src/config.cpp:343
#13 0x00007f8d245f5143 in KScreen::ConfigMonitor::Private::updateConfigs (this=this@entry=0x2133e40, newConfig=...) at /usr/src/debug/libkscreen-5.4.3/src/configmonitor.cpp:174
#14 0x00007f8d245f718b in KScreen::ConfigMonitor::Private::edidReady (this=0x2133e40, watcher=<optimized out>) at /usr/src/debug/libkscreen-5.4.3/src/configmonitor.cpp:159
#15 0x00007f8d1f5a073f in call (a=0x7fff5391b2a0, r=0x2133e40, this=0x24bd1b0) at ../../src/corelib/kernel/qobject_impl.h:124
#16 QMetaObject::activate (sender=0x66ba5f0, signalOffset=<optimized out>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x7fff5391b2a0) at kernel/qobject.cpp:3698
#17 0x00007f8d1f5a12e7 in QMetaObject::activate (sender=<optimized out>, m=m@entry=0x7f8d2057f5e0 <QDBusPendingCallWatcher::staticMetaObject>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x7fff5391b2a0) at kernel/qobject.cpp:3578
#18 0x00007f8d20365caf in QDBusPendingCallWatcher::finished (this=<optimized out>, _t1=0x66ba5f0) at .moc/moc_qdbuspendingcall.cpp:148
#19 0x00007f8d203672f7 in _q_finished (this=<optimized out>) at qdbuspendingcall.cpp:488
#20 QDBusPendingCallWatcher::qt_static_metacall (_o=<optimized out>, _c=<optimized out>, _id=<optimized out>, _a=<optimized out>) at .moc/moc_qdbuspendingcall.cpp:80
#21 0x00007f8d1f5a1ac6 in QObject::event (this=0x66ba5f0, e=<optimized out>) at kernel/qobject.cpp:1239
#22 0x00007f8d208fde7c in QApplicationPrivate::notify_helper (this=this@entry=0x1a74630, receiver=receiver@entry=0x66ba5f0, e=e@entry=0x680d5a0) at kernel/qapplication.cpp:3716
#23 0x00007f8d20902cc8 in QApplication::notify (this=0x7fff5391ba60, receiver=0x66ba5f0, e=0x680d5a0) at kernel/qapplication.cpp:3499
#24 0x00007f8d1f570e95 in QCoreApplication::notifyInternal (this=0x7fff5391ba60, receiver=0x66ba5f0, event=event@entry=0x680d5a0) at kernel/qcoreapplication.cpp:965
#25 0x00007f8d1f573057 in sendEvent (event=0x680d5a0, receiver=<optimized out>) at kernel/qcoreapplication.h:224
#26 QCoreApplicationPrivate::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0, data=0x1a69e90) at kernel/qcoreapplication.cpp:1593
#27 0x00007f8d1f573608 in QCoreApplication::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0) at kernel/qcoreapplication.cpp:1451
#28 0x00007f8d1f5c88f3 in postEventSourceDispatch (s=0x1a69a30) at kernel/qeventdispatcher_glib.cpp:271
#29 0x00007f8d1b30dc84 in g_main_context_dispatch () from /usr/lib64/libglib-2.0.so.0
#30 0x00007f8d1b30ded8 in ?? () from /usr/lib64/libglib-2.0.so.0
#31 0x00007f8d1b30df7c in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#32 0x00007f8d1f5c7d6c in QEventDispatcherGlib::processEvents (this=0x1ab0d90, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#33 0x00007f8d1f56ed53 in QEventLoop::exec (this=this@entry=0x7fff5391b8d0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#34 0x00007f8d1f5768f6 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1229
#35 0x000000000043467b in main (argc=2, argv=<optimized out>) at /usr/src/debug/plasma-workspace-5.4.3/shell/main.cpp:176

Possible duplicates by query: bug 357599, bug 356363, bug 356135, bug 356089, bug 355926.

Reported using DrKonqi