Application: systemsettings5 (5.4.1)

Qt Version: 5.4.2
Operating System: Linux 4.2.0-23-generic x86_64
Distribution: Ubuntu 15.10

-- Information about the crash:
- What I was doing when the application crashed:
I just modified my font sizes, clicked to go back to a different setting and the application crashed.

I am using the nvidia binary drivers for my X.

-- Backtrace:
Application: System Settings (systemsettings5), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f94d523d800 (LWP 11164))]

Thread 2 (Thread 0x7f94c22b1700 (LWP 11165)):
#0  0x00007f94d19d78dd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f94cf6e7bd2 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007f94cf6e974f in xcb_wait_for_event () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007f94c5071a39 in QXcbEventReader::run (this=0x9acd60) at qxcbconnection.cpp:1105
#4  0x00007f94d20ca2be in QThreadPrivate::start (arg=0x9acd60) at thread/qthread_unix.cpp:337
#5  0x00007f94cee726aa in start_thread (arg=0x7f94c22b1700) at pthread_create.c:333
#6  0x00007f94d19e2eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7f94d523d800 (LWP 11164)):
[KCrash Handler]
#6  0x00007f94c0f80c84 in KNotification::flags (this=this@entry=0x1256b90) at ../../src/knotification.cpp:233
#7  0x00007f94c0f9eaf7 in NotifyByAudio::onAudioFinished (this=0xee9150) at ../../src/notifybyaudio.cpp:140
#8  0x00007f94c0fa50a5 in NotifyByAudio::qt_static_metacall (_o=_o@entry=0xee9150, _c=_c@entry=QMetaObject::InvokeMetaMethod, _id=_id@entry=0, _a=_a@entry=0x7ffda53af7e0) at moc_notifybyaudio.cpp:82
#9  0x00007f94d22da78a in QMetaObject::activate (sender=0xfd82e0, signalOffset=<optimized out>, local_signal_index=<optimized out>, argv=<optimized out>) at kernel/qobject.cpp:3717
#10 0x00007f94c05f83ad in ?? () from /usr/lib/x86_64-linux-gnu/libphonon4qt5.so.4
#11 0x00007f94d22db651 in QObject::event (this=0xfd82e0, e=<optimized out>) at kernel/qobject.cpp:1245
#12 0x00007f94d372db8c in QApplicationPrivate::notify_helper (this=this@entry=0x97dca0, receiver=receiver@entry=0xfd82e0, e=e@entry=0x1250750) at kernel/qapplication.cpp:3720
#13 0x00007f94d3733230 in QApplication::notify (this=0x7ffda53afea0, receiver=0xfd82e0, e=0x1250750) at kernel/qapplication.cpp:3503
#14 0x00007f94d22a9f1b in QCoreApplication::notifyInternal (this=0x7ffda53afea0, receiver=0xfd82e0, event=event@entry=0x1250750) at kernel/qcoreapplication.cpp:935
#15 0x00007f94d22ac057 in QCoreApplication::sendEvent (event=0x1250750, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:228
#16 QCoreApplicationPrivate::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0, data=0x97d2e0) at kernel/qcoreapplication.cpp:1552
#17 0x00007f94d22ac588 in QCoreApplication::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0) at kernel/qcoreapplication.cpp:1410
#18 0x00007f94d2300e73 in postEventSourceDispatch (s=0x9e6830) at kernel/qeventdispatcher_glib.cpp:271
#19 0x00007f94ce952ff7 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#20 0x00007f94ce953250 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#21 0x00007f94ce9532fc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#22 0x00007f94d230127f in QEventDispatcherGlib::processEvents (this=0x9e68b0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#23 0x00007f94d22a775a in QEventLoop::exec (this=this@entry=0x7ffda53afd80, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#24 0x00007f94d22af2cc in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1188
#25 0x00007f94d317a00c in QGuiApplication::exec () at kernel/qguiapplication.cpp:1510
#26 0x00007f94d372a025 in QApplication::exec () at kernel/qapplication.cpp:2956
#27 0x000000000040f04b in main (argc=1, argv=<optimized out>) at ../../app/main.cpp:55

Possible duplicates by query: bug 354518, bug 354451, bug 353597, bug 351073, bug 351019.

Reported using DrKonqi