Bug 349420

Summary: plasmashell crashes on startup
Product: [Plasma] plasmashell Reporter: Alex G <gforce>
Component: generalAssignee: David Edmundson <kde>
Status: RESOLVED NOT A BUG    
Severity: crash CC: bshah, plasma-bugs-null
Priority: NOR Keywords: drkonqi
Version First Reported In: 5.3.1   
Target Milestone: 1.0   
Platform: Compiled Sources   
OS: Linux   
Latest Commit: Version Fixed/Implemented In:
Sentry Crash Report:

Description Alex G 2015-06-20 16:56:32 UTC 
Application: plasmashell (5.3.1)
 (Compiled from sources)
Qt Version: 5.4.2
Operating System: Linux 3.19.8-gentoo x86_64
Distribution: "Gentoo Base System release 2.2"

-- Information about the crash:
starting the plasma desktop, after loging in from the gdm display manager.

The crash can be reproduced every time.

-- Backtrace:
Application: Plasma (plasmashell), signal: Aborted
Using host libthread_db library "/lib64/libthread_db.so.1".
81	T_PSEUDO (SYSCALL_SYMBOL, SYSCALL_NAME, SYSCALL_NARGS)
[Current thread is 1 (Thread 0x7f269d382840 (LWP 29867))]

Thread 9 (Thread 0x7f269c198700 (LWP 29869)):
#0  0x00007f26a830e1dd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f26aa946252 in poll (__timeout=-1, __nfds=1, __fds=0x7f269c197c60) at /usr/include/bits/poll2.h:46
#2  _xcb_conn_wait (c=0x5145a0, cond=<optimized out>, vector=0x0, count=0x0) at /usr/src/debug/x11-libs/libxcb-1.11-r1/libxcb-1.11/src/xcb_conn.c:459
#3  0x00007f26aa947dcf in xcb_wait_for_event (c=0x7f269c197c60) at /usr/src/debug/x11-libs/libxcb-1.11-r1/libxcb-1.11/src/xcb_in.c:623
#4  0x00007f269d119db9 in QXcbEventReader::run (this=0x5223b0) at qxcbconnection.cpp:1105
#5  0x00007f26a897cd4e in QThreadPrivate::start (arg=0x5223b0) at thread/qthread_unix.cpp:337
#6  0x00007f26a7d012c4 in start_thread (arg=0x7f269c198700) at pthread_create.c:310
#7  0x00007f26a8316fcd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 8 (Thread 0x7f269a946700 (LWP 29873)):
#0  0x00007ffeb63f9b66 in clock_gettime ()
#1  0x00007f26a8323c2d in __GI___clock_gettime (clock_id=<optimized out>, tp=<optimized out>) at ../sysdeps/unix/clock_gettime.c:115
#2  0x00007f26a8a311d6 in qt_clock_gettime (ts=0x7f269a945ac0, clock=<optimized out>) at tools/qelapsedtimer_unix.cpp:105
#3  do_gettime (frac=<synthetic pointer>, sec=<synthetic pointer>) at tools/qelapsedtimer_unix.cpp:161
#4  qt_gettime () at tools/qelapsedtimer_unix.cpp:170
#5  0x00007f26a8bbbd39 in QTimerInfoList::updateCurrentTime (this=this@entry=0x7f268c002ed0) at kernel/qtimerinfo_unix.cpp:84
#6  0x00007f26a8bbc2a5 in QTimerInfoList::timerWait (this=0x7f268c002ed0, tm=...) at kernel/qtimerinfo_unix.cpp:379
#7  0x00007f26a8bbd67e in timerSourcePrepareHelper (timeout=0x7f269a945b94, src=<optimized out>) at kernel/qeventdispatcher_glib.cpp:127
#8  timerSourcePrepare (source=<optimized out>, timeout=timeout@entry=0x7f269a945b94) at kernel/qeventdispatcher_glib.cpp:160
#9  0x00007f26a5d5176d in g_main_context_prepare (context=context@entry=0x7f268c0009b0, priority=priority@entry=0x7f269a945c20) at /usr/src/debug/dev-libs/glib-2.44.1/glib-2.44.1/glib/gmain.c:3410
#10 0x00007f26a5d52158 in g_main_context_iterate (context=context@entry=0x7f268c0009b0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /usr/src/debug/dev-libs/glib-2.44.1/glib-2.44.1/glib/gmain.c:3788
#11 0x00007f26a5d5233c in g_main_context_iteration (context=0x7f268c0009b0, may_block=1) at /usr/src/debug/dev-libs/glib-2.44.1/glib-2.44.1/glib/gmain.c:3869
#12 0x00007f26a8bbe25c in QEventDispatcherGlib::processEvents (this=0x7f268c0008e0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#13 0x00007f26a8b64832 in QEventLoop::exec (this=this@entry=0x7f269a945d60, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#14 0x00007f26a8977f84 in QThread::exec (this=this@entry=0x65b680) at thread/qthread.cpp:503
#15 0x00007f26aa14efb5 in QQmlThreadPrivate::run (this=0x65b680) at qml/ftw/qqmlthread.cpp:141
#16 0x00007f26a897cd4e in QThreadPrivate::start (arg=0x65b680) at thread/qthread_unix.cpp:337
#17 0x00007f26a7d012c4 in start_thread (arg=0x7f269a946700) at pthread_create.c:310
#18 0x00007f26a8316fcd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 7 (Thread 0x7f2692b02700 (LWP 29884)):
#0  0x00007ffeb63f9b66 in clock_gettime ()
#1  0x00007f26a8323c2d in __GI___clock_gettime (clock_id=<optimized out>, tp=<optimized out>) at ../sysdeps/unix/clock_gettime.c:115
#2  0x00007f26a8a311d6 in qt_clock_gettime (ts=0x7f2692b01ac0, clock=<optimized out>) at tools/qelapsedtimer_unix.cpp:105
#3  do_gettime (frac=<synthetic pointer>, sec=<synthetic pointer>) at tools/qelapsedtimer_unix.cpp:161
#4  qt_gettime () at tools/qelapsedtimer_unix.cpp:170
#5  0x00007f26a8bbbd39 in QTimerInfoList::updateCurrentTime (this=this@entry=0x7f26880030d0) at kernel/qtimerinfo_unix.cpp:84
#6  0x00007f26a8bbc2a5 in QTimerInfoList::timerWait (this=0x7f26880030d0, tm=...) at kernel/qtimerinfo_unix.cpp:379
#7  0x00007f26a8bbd67e in timerSourcePrepareHelper (timeout=0x7f2692b01b94, src=<optimized out>) at kernel/qeventdispatcher_glib.cpp:127
#8  timerSourcePrepare (source=<optimized out>, timeout=timeout@entry=0x7f2692b01b94) at kernel/qeventdispatcher_glib.cpp:160
#9  0x00007f26a5d5176d in g_main_context_prepare (context=context@entry=0x7f2688000990, priority=priority@entry=0x7f2692b01c20) at /usr/src/debug/dev-libs/glib-2.44.1/glib-2.44.1/glib/gmain.c:3410
#10 0x00007f26a5d52158 in g_main_context_iterate (context=context@entry=0x7f2688000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /usr/src/debug/dev-libs/glib-2.44.1/glib-2.44.1/glib/gmain.c:3788
#11 0x00007f26a5d5233c in g_main_context_iteration (context=0x7f2688000990, may_block=1) at /usr/src/debug/dev-libs/glib-2.44.1/glib-2.44.1/glib/gmain.c:3869
#12 0x00007f26a8bbe25c in QEventDispatcherGlib::processEvents (this=0x7f26880008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#13 0x00007f26a8b64832 in QEventLoop::exec (this=this@entry=0x7f2692b01d60, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#14 0x00007f26a8977f84 in QThread::exec (this=this@entry=0x9a7290) at thread/qthread.cpp:503
#15 0x00007f26aa14efb5 in QQmlThreadPrivate::run (this=0x9a7290) at qml/ftw/qqmlthread.cpp:141
#16 0x00007f26a897cd4e in QThreadPrivate::start (arg=0x9a7290) at thread/qthread_unix.cpp:337
#17 0x00007f26a7d012c4 in start_thread (arg=0x7f2692b02700) at pthread_create.c:310
#18 0x00007f26a8316fcd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 6 (Thread 0x7f2690ce1700 (LWP 29888)):
#0  0x00007ffeb63f9b66 in clock_gettime ()
#1  0x00007f26a8323c2d in __GI___clock_gettime (clock_id=<optimized out>, tp=<optimized out>) at ../sysdeps/unix/clock_gettime.c:115
#2  0x00007f26a8a311d6 in qt_clock_gettime (ts=0x7f2690ce0ac0, clock=<optimized out>) at tools/qelapsedtimer_unix.cpp:105
#3  do_gettime (frac=<synthetic pointer>, sec=<synthetic pointer>) at tools/qelapsedtimer_unix.cpp:161
#4  qt_gettime () at tools/qelapsedtimer_unix.cpp:170
#5  0x00007f26a8bbbd39 in QTimerInfoList::updateCurrentTime (this=this@entry=0x7f2684002ed0) at kernel/qtimerinfo_unix.cpp:84
#6  0x00007f26a8bbc2a5 in QTimerInfoList::timerWait (this=0x7f2684002ed0, tm=...) at kernel/qtimerinfo_unix.cpp:379
#7  0x00007f26a8bbd67e in timerSourcePrepareHelper (timeout=0x7f2690ce0b94, src=<optimized out>) at kernel/qeventdispatcher_glib.cpp:127
#8  timerSourcePrepare (source=<optimized out>, timeout=timeout@entry=0x7f2690ce0b94) at kernel/qeventdispatcher_glib.cpp:160
#9  0x00007f26a5d5176d in g_main_context_prepare (context=context@entry=0x7f2684000990, priority=priority@entry=0x7f2690ce0c20) at /usr/src/debug/dev-libs/glib-2.44.1/glib-2.44.1/glib/gmain.c:3410
#10 0x00007f26a5d52158 in g_main_context_iterate (context=context@entry=0x7f2684000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /usr/src/debug/dev-libs/glib-2.44.1/glib-2.44.1/glib/gmain.c:3788
#11 0x00007f26a5d5233c in g_main_context_iteration (context=0x7f2684000990, may_block=1) at /usr/src/debug/dev-libs/glib-2.44.1/glib-2.44.1/glib/gmain.c:3869
#12 0x00007f26a8bbe25c in QEventDispatcherGlib::processEvents (this=0x7f26840008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#13 0x00007f26a8b64832 in QEventLoop::exec (this=this@entry=0x7f2690ce0d60, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#14 0x00007f26a8977f84 in QThread::exec (this=this@entry=0xc01560) at thread/qthread.cpp:503
#15 0x00007f26aa14efb5 in QQmlThreadPrivate::run (this=0xc01560) at qml/ftw/qqmlthread.cpp:141
#16 0x00007f26a897cd4e in QThreadPrivate::start (arg=0xc01560) at thread/qthread_unix.cpp:337
#17 0x00007f26a7d012c4 in start_thread (arg=0x7f2690ce1700) at pthread_create.c:310
#18 0x00007f26a8316fcd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 5 (Thread 0x7f267f7ff700 (LWP 29889)):
#0  g_mutex_unlock (mutex=0x7f2678000990) at /usr/src/debug/dev-libs/glib-2.44.1/glib-2.44.1/glib/gthread-posix.c:1348
#1  0x00007f26a5d52346 in g_main_context_iteration (context=0x7f2678000990, may_block=<optimized out>) at /usr/src/debug/dev-libs/glib-2.44.1/glib-2.44.1/glib/gmain.c:3870
#2  0x00007f26a8bbe25c in QEventDispatcherGlib::processEvents (this=0x7f26780008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#3  0x00007f26a8b64832 in QEventLoop::exec (this=this@entry=0x7f267f7fed60, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#4  0x00007f26a8977f84 in QThread::exec (this=this@entry=0xcf8e90) at thread/qthread.cpp:503
#5  0x00007f26aa14efb5 in QQmlThreadPrivate::run (this=0xcf8e90) at qml/ftw/qqmlthread.cpp:141
#6  0x00007f26a897cd4e in QThreadPrivate::start (arg=0xcf8e90) at thread/qthread_unix.cpp:337
#7  0x00007f26a7d012c4 in start_thread (arg=0x7f267f7ff700) at pthread_create.c:310
#8  0x00007f26a8316fcd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 4 (Thread 0x7f267e7fe700 (LWP 29890)):
#0  0x00007f26a830e1dd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f26a5d5222c in g_main_context_poll (priority=2147483647, n_fds=1, fds=0x7f2670002e70, timeout=-1, context=0x7f2670000990) at /usr/src/debug/dev-libs/glib-2.44.1/glib-2.44.1/glib/gmain.c:4103
#2  g_main_context_iterate (context=context@entry=0x7f2670000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /usr/src/debug/dev-libs/glib-2.44.1/glib-2.44.1/glib/gmain.c:3803
#3  0x00007f26a5d5233c in g_main_context_iteration (context=0x7f2670000990, may_block=1) at /usr/src/debug/dev-libs/glib-2.44.1/glib-2.44.1/glib/gmain.c:3869
#4  0x00007f26a8bbe25c in QEventDispatcherGlib::processEvents (this=0x7f26700008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#5  0x00007f26a8b64832 in QEventLoop::exec (this=this@entry=0x7f267e7fdd60, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007f26a8977f84 in QThread::exec (this=this@entry=0xdf1ae0) at thread/qthread.cpp:503
#7  0x00007f26aa14efb5 in QQmlThreadPrivate::run (this=0xdf1ae0) at qml/ftw/qqmlthread.cpp:141
#8  0x00007f26a897cd4e in QThreadPrivate::start (arg=0xdf1ae0) at thread/qthread_unix.cpp:337
#9  0x00007f26a7d012c4 in start_thread (arg=0x7f267e7fe700) at pthread_create.c:310
#10 0x00007f26a8316fcd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 3 (Thread 0x7f267d7fd700 (LWP 29891)):
#0  g_main_context_iterate (context=context@entry=0x7f2674000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /usr/src/debug/dev-libs/glib-2.44.1/glib-2.44.1/glib/gmain.c:3758
#1  0x00007f26a5d5233c in g_main_context_iteration (context=0x7f2674000990, may_block=1) at /usr/src/debug/dev-libs/glib-2.44.1/glib-2.44.1/glib/gmain.c:3869
#2  0x00007f26a8bbe25c in QEventDispatcherGlib::processEvents (this=0x7f26740008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#3  0x00007f26a8b64832 in QEventLoop::exec (this=this@entry=0x7f267d7fcd60, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#4  0x00007f26a8977f84 in QThread::exec (this=this@entry=0xef9d10) at thread/qthread.cpp:503
#5  0x00007f26aa14efb5 in QQmlThreadPrivate::run (this=0xef9d10) at qml/ftw/qqmlthread.cpp:141
#6  0x00007f26a897cd4e in QThreadPrivate::start (arg=0xef9d10) at thread/qthread_unix.cpp:337
#7  0x00007f26a7d012c4 in start_thread (arg=0x7f267d7fd700) at pthread_create.c:310
#8  0x00007f26a8316fcd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7f266ffff700 (LWP 29892)):
#0  0x00007f26a830a1dd in read () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f26a472af75 in ?? () from /usr/lib64/libnvidia-tls.so.352.21
#2  0x00007f26a5d950c0 in read (__nbytes=16, __buf=0x7f266fffeb50, __fd=<optimized out>) at /usr/include/bits/unistd.h:44
#3  g_wakeup_acknowledge (wakeup=0x7f2674002540) at /usr/src/debug/dev-libs/glib-2.44.1/glib-2.44.1/glib/gwakeup.c:210
#4  0x00007f26a5d51cdc in g_main_context_check (context=context@entry=0x7f2668000990, max_priority=2147483647, fds=fds@entry=0x7f2668003270, n_fds=n_fds@entry=1) at /usr/src/debug/dev-libs/glib-2.44.1/glib-2.44.1/glib/gmain.c:3600
#5  0x00007f26a5d521d0 in g_main_context_iterate (context=context@entry=0x7f2668000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /usr/src/debug/dev-libs/glib-2.44.1/glib-2.44.1/glib/gmain.c:3805
#6  0x00007f26a5d5233c in g_main_context_iteration (context=0x7f2668000990, may_block=1) at /usr/src/debug/dev-libs/glib-2.44.1/glib-2.44.1/glib/gmain.c:3869
#7  0x00007f26a8bbe25c in QEventDispatcherGlib::processEvents (this=0x7f26680008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#8  0x00007f26a8b64832 in QEventLoop::exec (this=this@entry=0x7f266fffed60, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#9  0x00007f26a8977f84 in QThread::exec (this=this@entry=0xffbd50) at thread/qthread.cpp:503
#10 0x00007f26aa14efb5 in QQmlThreadPrivate::run (this=0xffbd50) at qml/ftw/qqmlthread.cpp:141
#11 0x00007f26a897cd4e in QThreadPrivate::start (arg=0xffbd50) at thread/qthread_unix.cpp:337
#12 0x00007f26a7d012c4 in start_thread (arg=0x7f266ffff700) at pthread_create.c:310
#13 0x00007f26a8316fcd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7f269d382840 (LWP 29867)):
[KCrash Handler]
#6  0x00007f26a8260a87 in __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:55
#7  0x00007f26a8261e0a in __GI_abort () at abort.c:89
#8  0x00007f26a896a1cf in qt_message_fatal (context=..., message=...) at global/qlogging.cpp:1422
#9  QMessageLogger::fatal (this=this@entry=0x7ffeb6382530, msg=msg@entry=0x7f26a8c34f80 "Cannot mix incompatible Qt library (version 0x%x) with this library (version 0x%x)") at global/qlogging.cpp:643
#10 0x00007f26a8b94511 in QObjectPrivate::QObjectPrivate (this=<optimized out>, version=<optimized out>) at kernel/qobject.cpp:198
#11 0x00007f26aaebcdcb in QScriptEnginePrivate::QScriptEnginePrivate (this=this@entry=0x10fcea0) at api/qscriptengine.cpp:976
#12 0x00007f26aaebd9ff in QScriptEngine::QScriptEngine (this=0x7ffeb6382710, parent=0x0) at api/qscriptengine.cpp:2059
#13 0x000000000047495e in WorkspaceScripting::ScriptEngine::ScriptEngine (this=0x7ffeb6382710, corona=0x641c20, parent=<optimized out>) at /usr/src/debug/kde-plasma/plasma-workspace-5.3.49.9999/plasma-workspace-5.3.49.9999/shell/scripting/scriptengine.cpp:63
#14 0x0000000000456901 in ShellCorona::processUpdateScripts (this=this@entry=0x641c20) at /usr/src/debug/kde-plasma/plasma-workspace-5.3.49.9999/plasma-workspace-5.3.49.9999/shell/shellcorona.cpp:544
#15 0x0000000000456de0 in ShellCorona::load (this=0x641c20) at /usr/src/debug/kde-plasma/plasma-workspace-5.3.49.9999/plasma-workspace-5.3.49.9999/shell/shellcorona.cpp:309
#16 0x000000000045776a in operator() (op=<optimized out>, __closure=<synthetic pointer>) at /usr/src/debug/kde-plasma/plasma-workspace-5.3.49.9999/plasma-workspace-5.3.49.9999/shell/shellcorona.cpp:268
#17 call (arg=<optimized out>, f=...) at /usr/include/qt5/QtCore/qobjectdefs_impl.h:494
#18 call<QtPrivate::List<KScreen::ConfigOperation*>, void> (arg=<optimized out>, f=...) at /usr/include/qt5/QtCore/qobjectdefs_impl.h:551
#19 QtPrivate::QFunctorSlotObject<ShellCorona::setShell(const QString&)::<lambda(KScreen::ConfigOperation*)>, 1, QtPrivate::List<KScreen::ConfigOperation*>, void>::impl(int, QtPrivate::QSlotObjectBase *, QObject *, void **, bool *) (which=<optimized out>, this_=<optimized out>, r=<optimized out>, a=<optimized out>, ret=<optimized out>) at /usr/include/qt5/QtCore/qobject_impl.h:192
#20 0x00007f26a8b95e9a in call (a=0x7ffeb6382aa0, r=0x641c20, this=0x4f6e70) at ../../src/corelib/kernel/qobject_impl.h:124
#21 QMetaObject::activate (sender=sender@entry=0xbf8210, signalOffset=<optimized out>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x7ffeb6382aa0) at kernel/qobject.cpp:3702
#22 0x00007f26a8b96b87 in QMetaObject::activate (sender=sender@entry=0xbf8210, m=m@entry=0x7f26aacddd80 <KScreen::ConfigOperation::staticMetaObject>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x7ffeb6382aa0) at kernel/qobject.cpp:3582
#23 0x00007f26aaccfb9f in KScreen::ConfigOperation::finished (this=this@entry=0xbf8210, _t1=_t1@entry=0xbf8210) at /usr/src/debug/kde-plasma/libkscreen-5.3.49.9999/libkscreen-5.3.49.9999_build/src/moc_configoperation.cpp:145
#24 0x00007f26aacb8f68 in KScreen::ConfigOperationPrivate::doEmitResult (this=0xc06550) at /usr/src/debug/kde-plasma/libkscreen-5.3.49.9999/libkscreen-5.3.49.9999/src/configoperation.cpp:56
#25 0x00007f26a8b9767a in QObject::event (this=0xc06550, e=<optimized out>) at kernel/qobject.cpp:1245
#26 0x00007f26a94d697c in QApplicationPrivate::notify_helper (this=0x4fb720, receiver=0xc06550, e=0x6567f0) at kernel/qapplication.cpp:3720
#27 0x00007f26a94defe0 in QApplication::notify (this=0x7ffeb6383190, receiver=0xc06550, e=0x6567f0) at kernel/qapplication.cpp:3503
#28 0x00007f26a8b66f9b in QCoreApplication::notifyInternal (this=0x7ffeb6383190, receiver=0xc06550, event=event@entry=0x6567f0) at kernel/qcoreapplication.cpp:935
#29 0x00007f26a8b68fdb in sendEvent (event=0x6567f0, receiver=<optimized out>) at kernel/qcoreapplication.h:228
#30 QCoreApplicationPrivate::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0, data=0x4f0c50) at kernel/qcoreapplication.cpp:1552
#31 0x00007f26a8b695d8 in QCoreApplication::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0) at kernel/qcoreapplication.cpp:1410
#32 0x00007f26a8bbde53 in postEventSourceDispatch (s=0x54b900) at kernel/qeventdispatcher_glib.cpp:271
#33 0x00007f26a5d51fad in g_main_dispatch (context=0x7f2694002450) at /usr/src/debug/dev-libs/glib-2.44.1/glib-2.44.1/glib/gmain.c:3122
#34 g_main_context_dispatch (context=context@entry=0x7f2694002450) at /usr/src/debug/dev-libs/glib-2.44.1/glib-2.44.1/glib/gmain.c:3737
#35 0x00007f26a5d52290 in g_main_context_iterate (context=context@entry=0x7f2694002450, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /usr/src/debug/dev-libs/glib-2.44.1/glib-2.44.1/glib/gmain.c:3808
#36 0x00007f26a5d5233c in g_main_context_iteration (context=0x7f2694002450, may_block=1) at /usr/src/debug/dev-libs/glib-2.44.1/glib-2.44.1/glib/gmain.c:3869
#37 0x00007f26a8bbe247 in QEventDispatcherGlib::processEvents (this=0x54b8e0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#38 0x00007f26a8b64832 in QEventLoop::exec (this=this@entry=0x7ffeb6383010, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#39 0x00007f26a8b6c2dc in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1188
#40 0x00007f26a8e8a00c in QGuiApplication::exec () at kernel/qguiapplication.cpp:1507
#41 0x00007f26a94d68e5 in QApplication::exec () at kernel/qapplication.cpp:2956
#42 0x000000000042f413 in main (argc=4, argv=<optimized out>) at /usr/src/debug/kde-plasma/plasma-workspace-5.3.49.9999/plasma-workspace-5.3.49.9999/shell/main.cpp:154

Possible duplicates by query: bug 349293, bug 349162, bug 348793, bug 348124, bug 347880.

Reported using DrKonqi
Comment 1 David Edmundson 2015-06-20 17:03:00 UTC 
See the message in here:

#9 QMessageLogger::fatal (this=this@entry=0x7ffeb6382530, msg=msg@entry=0x7f26a8c34f80 "Cannot mix incompatible Qt library (version 0x%x) with this library (version 0x%x)") at global/qlogging.cpp:643