Application: systemsettings5 (5.2.2)

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 was browsing setting categories. I don't recall the exact operation I did when it crashed. It did not crash immediately after my last input, but a few seconds later.

-- 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 0x7f259ab33780 (LWP 2849))]

Thread 5 (Thread 0x7f25881b0700 (LWP 2850)):
#0  0x00007f25972a08dd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f25955bab72 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007f25955bc64f in xcb_wait_for_event () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007f258af6d099 in QXcbEventReader::run (this=0x15458d0) at qxcbconnection.cpp:1105
#4  0x00007f2597921b0e in QThreadPrivate::start (arg=0x15458d0) at thread/qthread_unix.cpp:337
#5  0x00007f25944d46aa in start_thread (arg=0x7f25881b0700) at pthread_create.c:333
#6  0x00007f25972abeed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 4 (Thread 0x7f257a3db700 (LWP 2852)):
#0  0x00007f259729c49d in read () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f2590428f45 in ?? () from /usr/lib/nvidia-340/tls/libnvidia-tls.so.340.76
#2  0x00007f2593ff92f0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f2593fb596c in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f2593fb5e60 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f2593fb6242 in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007f2585c30ae6 in ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#7  0x00007f2593fdc955 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#8  0x00007f25944d46aa in start_thread (arg=0x7f257a3db700) at pthread_create.c:333
#9  0x00007f25972abeed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 3 (Thread 0x7f2579bda700 (LWP 2853)):
#0  0x00007f25972a08dd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f2593fb5ebc in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f2593fb5fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f2593fb6009 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f2593fdc955 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f25944d46aa in start_thread (arg=0x7f2579bda700) at pthread_create.c:333
#6  0x00007f25972abeed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7f2524707700 (LWP 3234)):
#0  0x00007f2593ffa7a4 in g_mutex_unlock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f2593fb53f0 in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f2593fb5de8 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f2593fb5fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f2597bb8c6c in QEventDispatcherGlib::processEvents (this=0x7f253c0ce2c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#5  0x00007f2597b5d3e2 in QEventLoop::exec (this=this@entry=0x7f2524706e00, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007f259791cb44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#7  0x00007f252906ecf7 in KCupsConnection::run() () from /usr/lib/x86_64-linux-gnu/libkcupslib.so
#8  0x00007f2597921b0e in QThreadPrivate::start (arg=0x23a9e00) at thread/qthread_unix.cpp:337
#9  0x00007f25944d46aa in start_thread (arg=0x7f2524707700) at pthread_create.c:333
#10 0x00007f25972abeed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7f259ab33780 (LWP 2849)):
[KCrash Handler]
#6  0x00007f25963a9d6b in QQuickItemPrivate::addToDirtyList() () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#7  0x00007f25963a9e28 in QQuickItemPrivate::dirty(QQuickItemPrivate::DirtyType) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#8  0x00007f25963b4045 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#9  0x00007f2597b9173a in QObject::event (this=0x44559c0, e=<optimized out>) at kernel/qobject.cpp:1245
#10 0x00007f25963b2b6b in QQuickItem::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#11 0x00007f259894bb2c in QApplicationPrivate::notify_helper (this=0x1517430, receiver=0x44559c0, e=0x7f250413f8b0) at kernel/qapplication.cpp:3720
#12 0x00007f2598951000 in QApplication::notify (this=0x7fff57311a60, receiver=0x44559c0, e=0x7f250413f8b0) at kernel/qapplication.cpp:3503
#13 0x00007f2597b5fc2b in QCoreApplication::notifyInternal (this=0x7fff57311a60, receiver=0x44559c0, event=event@entry=0x7f250413f8b0) at kernel/qcoreapplication.cpp:935
#14 0x00007f2597b61c9b in sendEvent (event=0x7f250413f8b0, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:228
#15 QCoreApplicationPrivate::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0, data=0x1516650) at kernel/qcoreapplication.cpp:1552
#16 0x00007f2597b62298 in QCoreApplication::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0) at kernel/qcoreapplication.cpp:1410
#17 0x00007f2597bb8843 in postEventSourceDispatch (s=0x15ce420) at kernel/qeventdispatcher_glib.cpp:271
#18 0x00007f2593fb5c3d in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#19 0x00007f2593fb5f20 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#20 0x00007f2593fb5fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#21 0x00007f2597bb8c57 in QEventDispatcherGlib::processEvents (this=0x15f52d0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#22 0x00007f2597b5d3e2 in QEventLoop::exec (this=this@entry=0x7fff57311940, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#23 0x00007f2597b6502c in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1188
#24 0x00007f259838631c in QGuiApplication::exec () at kernel/qguiapplication.cpp:1510
#25 0x00007f25989477a5 in QApplication::exec () at kernel/qapplication.cpp:2956
#26 0x000000000040eebc in main (argc=1, argv=<optimized out>) at ../../app/main.cpp:54

Reported using DrKonqi