Application: systemsettings5 (5.3.0)

Qt Version: 5.4.1
Operating System: Linux 3.19.0-16-generic x86_64
Distribution: Ubuntu 15.04

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

I opened system settings via the K-Menu and it crashed immediately. It seems not to be reproducible as the application starts correctly the next time.

-- Backtrace:
Application: Systemeinstellungen (systemsettings5), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7face5099780 (LWP 4882))]

Thread 4 (Thread 0x7facd46a3700 (LWP 4883)):
#0  0x00007face18028dd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007facdfb1cb72 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007facdfb1e64f in xcb_wait_for_event () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007facd6bee099 in QXcbEventReader::run (this=0x1e66b00) at qxcbconnection.cpp:1105
#4  0x00007face1e83b0e in QThreadPrivate::start (arg=0x1e66b00) at thread/qthread_unix.cpp:337
#5  0x00007facdea366aa in start_thread (arg=0x7facd46a3700) at pthread_create.c:333
#6  0x00007face180deed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 3 (Thread 0x7facc4eea700 (LWP 4884)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007facc7f274fb in ?? () from /usr/lib/x86_64-linux-gnu/dri/r600_dri.so
#2  0x00007facc7f26c87 in ?? () from /usr/lib/x86_64-linux-gnu/dri/r600_dri.so
#3  0x00007facdea366aa in start_thread (arg=0x7facc4eea700) at pthread_create.c:333
#4  0x00007face180deed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7faca3fff700 (LWP 4988)):
#0  0x00007face18028dd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007facde517ebc in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007facde518242 in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007facb5024ae6 in ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#4  0x00007facde53e955 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007facdea366aa in start_thread (arg=0x7faca3fff700) at pthread_create.c:333
#6  0x00007face180deed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7face5099780 (LWP 4882)):
[KCrash Handler]
#6  0x00007face2ed94fd in maybeTopData (this=<optimized out>) at ../../include/QtWidgets/5.4.1/QtWidgets/private/../../../../../src/widgets/kernel/qwidget_p.h:937
#7  QWidget::windowHandle (this=0x1f44fd0) at kernel/qwidget.cpp:2570
#8  0x00007face2ee0911 in QWidget::activateWindow (this=<optimized out>) at kernel/qwidget.cpp:12561
#9  0x00007face20f235a in call (a=0x7ffdb5ee7ea0, r=0x7ffdb5ee8900, this=0x1ec7700) at ../../include/QtCore/../../src/corelib/kernel/qobject_impl.h:124
#10 QMetaObject::activate (sender=0x1ecf2d0, signalOffset=<optimized out>, local_signal_index=<optimized out>, argv=0x7ffdb5ee7ea0) at kernel/qobject.cpp:3702
#11 0x00007face3dd8727 in KDBusService::activateRequested(QStringList const&, QString const&) () from /usr/lib/x86_64-linux-gnu/libKF5DBusAddons.so.5
#12 0x00007face3dd5186 in KDBusService::Activate(QMap<QString, QVariant> const&) () from /usr/lib/x86_64-linux-gnu/libKF5DBusAddons.so.5
#13 0x00007face3dd8513 in ?? () from /usr/lib/x86_64-linux-gnu/libKF5DBusAddons.so.5
#14 0x00007face51e95c7 in QDBusConnectionPrivate::deliverCall (this=0x1f44fd0, object=0x1ec7700, msg=..., metaTypes=..., slotIdx=0) at qdbusintegrator.cpp:993
#15 0x00007face51edefc in QDBusConnectionPrivate::activateCall (this=0x1f44fd0, this@entry=0x1e949e0, object=0x1eceb10, flags=273, msg=...) at qdbusintegrator.cpp:898
#16 0x00007face51ee9bb in QDBusConnectionPrivate::activateObject (this=0x1e949e0, node=..., msg=..., pathStartPos=<optimized out>) at qdbusintegrator.cpp:1460
#17 0x00007face51f07fe in QDBusActivateObjectEvent::placeMetaCall (this=0x228c0e0) at qdbusintegrator.cpp:1582
#18 0x00007face20f373a in QObject::event (this=0x1ecf2d0, e=<optimized out>) at kernel/qobject.cpp:1245
#19 0x00007face2eadb2c in QApplicationPrivate::notify_helper (this=0x1e4bb10, receiver=0x1ecf2d0, e=0x228c0e0) at kernel/qapplication.cpp:3720
#20 0x00007face2eb3000 in QApplication::notify (this=0x7ffdb5ee8900, receiver=0x1ecf2d0, e=0x228c0e0) at kernel/qapplication.cpp:3503
#21 0x00007face20c1c2b in QCoreApplication::notifyInternal (this=0x7ffdb5ee8900, receiver=0x1ecf2d0, event=event@entry=0x228c0e0) at kernel/qcoreapplication.cpp:935
#22 0x00007face20c3c9b in sendEvent (event=0x228c0e0, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:228
#23 QCoreApplicationPrivate::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0, data=0x1e4ad60) at kernel/qcoreapplication.cpp:1552
#24 0x00007face20c4298 in QCoreApplication::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0) at kernel/qcoreapplication.cpp:1410
#25 0x00007face211a843 in postEventSourceDispatch (s=0x1e936d0) at kernel/qeventdispatcher_glib.cpp:271
#26 0x00007facde517c3d in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#27 0x00007facde517f20 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#28 0x00007facde517fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#29 0x00007face211ac57 in QEventDispatcherGlib::processEvents (this=0x1e9fa80, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#30 0x00007face20bf3e2 in QEventLoop::exec (this=this@entry=0x7ffdb5ee87e0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#31 0x00007face20c702c in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1188
#32 0x00007face28e831c in QGuiApplication::exec () at kernel/qguiapplication.cpp:1510
#33 0x00007face2ea97a5 in QApplication::exec () at kernel/qapplication.cpp:2956
#34 0x000000000040ef5b in main (argc=1, argv=<optimized out>) at ../../app/main.cpp:55

Reported using DrKonqi