Application: systemsettings5 (5.2.2)

Qt Version: 5.4.1
Operating System: Linux 3.19.0-22-generic x86_64
Distribution: Ubuntu 15.04

-- Information about the crash:
I was adjusting settings after doing a fresh install of Kubuntu on a new HP 15-g220ca laptop.  When clicking on another setting tab the computer asked me if I wanted to accept the changes or discard them.  I did not remember making any changes so I clicked on discard.  This is when I recieved the crash.

-- 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 0x7fac01c0d780 (LWP 1728))]

Thread 5 (Thread 0x7fabf1384700 (LWP 1729)):
#0  0x00007fabfe36f8dd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007fabfc689b72 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007fabfc68b64f in xcb_wait_for_event () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007fabf38cf099 in QXcbEventReader::run (this=0xf82af0) at qxcbconnection.cpp:1105
#4  0x00007fabfe9f0b0e in QThreadPrivate::start (arg=0xf82af0) at thread/qthread_unix.cpp:337
#5  0x00007fabfb5a36aa in start_thread (arg=0x7fabf1384700) at pthread_create.c:333
#6  0x00007fabfe37aeed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 4 (Thread 0x7fabe20d8700 (LWP 1730)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fabe51154fb in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#2  0x00007fabe5114c87 in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#3  0x00007fabfb5a36aa in start_thread (arg=0x7fabe20d8700) at pthread_create.c:333
#4  0x00007fabfe37aeed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 3 (Thread 0x7fabd664b700 (LWP 1737)):
#0  0x00007fabfe36f8dd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007fabfb084ebc in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fabfb084fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fabfec87c6c in QEventDispatcherGlib::processEvents (this=0x7fabc80008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#4  0x00007fabfec2c3e2 in QEventLoop::exec (this=this@entry=0x7fabd664ae40, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007fabfe9ebb44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#6  0x00007fabfe9f0b0e in QThreadPrivate::start (arg=0x1a5c4e0) at thread/qthread_unix.cpp:337
#7  0x00007fabfb5a36aa in start_thread (arg=0x7fabd664b700) at pthread_create.c:333
#8  0x00007fabfe37aeed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7fabb9930700 (LWP 1845)):
#0  0x00007fabfe36f8dd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007fabfb084ebc in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fabfb085242 in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fabbedf6af6 in ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#4  0x00007fabfb0ab955 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007fabfb5a36aa in start_thread (arg=0x7fabb9930700) at pthread_create.c:333
#6  0x00007fabfe37aeed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7fac01c0d780 (LWP 1728)):
[KCrash Handler]
#6  0x00007fabf02542f4 in KNotification::id (this=this@entry=0x1fb63e0) at ../../src/knotification.cpp:389
#7  0x00007fabf0255569 in KNotificationManager::notifyPluginFinished (this=0x7fabf0489e90 <(anonymous namespace)::Q_QGS_s_self::innerFunction()::holder>, notification=0x1fb63e0) at ../../src/knotificationmanager.cpp:115
#8  0x00007fabf02569ac in KNotificationManager::qt_static_metacall (_o=0x1fb63e0, _c=33252320, _id=2, _a=0x7ffcc9683930) at ./moc_knotificationmanager_p.cpp:83
#9  0x00007fabfec5f9c9 in QMetaObject::activate (sender=sender@entry=0x1a2e9c0, signalOffset=<optimized out>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x7ffcc9683930) at kernel/qobject.cpp:3716
#10 0x00007fabfec60057 in QMetaObject::activate (sender=sender@entry=0x1a2e9c0, m=m@entry=0x7fabf0487be0 <KNotificationPlugin::staticMetaObject>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x7ffcc9683930) at kernel/qobject.cpp:3582
#11 0x00007fabf0277b7f in KNotificationPlugin::finished (this=this@entry=0x1a2e9c0, _t1=0x1fb63e0) at moc_knotificationplugin.cpp:139
#12 0x00007fabf0267725 in KNotificationPlugin::finish (this=this@entry=0x1a2e9c0, notification=<optimized out>) at ../../src/knotificationplugin.cpp:52
#13 0x00007fabf0271fc0 in NotifyByAudio::onAudioFinished (this=0x1a2e9c0) at ../../src/notifybyaudio.cpp:138
#14 0x00007fabf0278475 in NotifyByAudio::qt_static_metacall (_o=<optimized out>, _c=<optimized out>, _id=<optimized out>, _a=<optimized out>) at moc_notifybyaudio.cpp:82
#15 0x00007fabfec5f9c9 in QMetaObject::activate (sender=0x1394890, signalOffset=<optimized out>, local_signal_index=<optimized out>, argv=0x0) at kernel/qobject.cpp:3716
#16 0x00007fabeb8b93ad in ?? () from /usr/lib/x86_64-linux-gnu/libphonon4qt5.so.4
#17 0x00007fabfec6073a in QObject::event (this=0x1394890, e=<optimized out>) at kernel/qobject.cpp:1245
#18 0x00007fabffa1ab2c in QApplicationPrivate::notify_helper (this=0xf67b10, receiver=0x1394890, e=0x21a0ce0) at kernel/qapplication.cpp:3720
#19 0x00007fabffa20000 in QApplication::notify (this=0x7ffcc9684150, receiver=0x1394890, e=0x21a0ce0) at kernel/qapplication.cpp:3503
#20 0x00007fabfec2ec2b in QCoreApplication::notifyInternal (this=0x7ffcc9684150, receiver=0x1394890, event=event@entry=0x21a0ce0) at kernel/qcoreapplication.cpp:935
#21 0x00007fabfec30c9b in sendEvent (event=0x21a0ce0, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:228
#22 QCoreApplicationPrivate::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0, data=0xf66d60) at kernel/qcoreapplication.cpp:1552
#23 0x00007fabfec31298 in QCoreApplication::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0) at kernel/qcoreapplication.cpp:1410
#24 0x00007fabfec87843 in postEventSourceDispatch (s=0xfb3800) at kernel/qeventdispatcher_glib.cpp:271
#25 0x00007fabfb084c3d in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#26 0x00007fabfb084f20 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#27 0x00007fabfb084fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#28 0x00007fabfec87c57 in QEventDispatcherGlib::processEvents (this=0xfadba0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#29 0x00007fabfec2c3e2 in QEventLoop::exec (this=this@entry=0x7ffcc9684030, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#30 0x00007fabfec3402c in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1188
#31 0x00007fabff45531c in QGuiApplication::exec () at kernel/qguiapplication.cpp:1510
#32 0x00007fabffa167a5 in QApplication::exec () at kernel/qapplication.cpp:2956
#33 0x000000000040eebc in main (argc=1, argv=<optimized out>) at ../../app/main.cpp:54

Reported using DrKonqi