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 was changing some compositor options in system settings. After closing, system settings crashed.

-- 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 0x7f88c3f7d780 (LWP 2241))]

Thread 3 (Thread 0x7f88b1639700 (LWP 2242)):
#0  0x00007f88c06e18dd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f88be9fbb72 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007f88be9fd64f in xcb_wait_for_event () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007f88b43cc099 in QXcbEventReader::run (this=0xcbd990) at qxcbconnection.cpp:1105
#4  0x00007f88c0d62b0e in QThreadPrivate::start (arg=0xcbd990) at thread/qthread_unix.cpp:337
#5  0x00007f88bd9156aa in start_thread (arg=0x7f88b1639700) at pthread_create.c:333
#6  0x00007f88c06eceed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7f88a2acb700 (LWP 2243)):
#0  0x00007f88c06dd49d in read () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f88b985df45 in ?? () from /usr/lib/nvidia-346/tls/libnvidia-tls.so.346.59
#2  0x00007f88bd43a2f0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f88bd3f696c in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f88bd3f6e60 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f88bd3f6fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007f88c0ff9c6c in QEventDispatcherGlib::processEvents (this=0x7f889c0008e0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#7  0x00007f88c0f9e3e2 in QEventLoop::exec (this=this@entry=0x7f88a2acae20, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#8  0x00007f88c0d5db44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#9  0x00007f88bfd28f65 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#10 0x00007f88c0d62b0e in QThreadPrivate::start (arg=0x11b3980) at thread/qthread_unix.cpp:337
#11 0x00007f88bd9156aa in start_thread (arg=0x7f88a2acb700) at pthread_create.c:333
#12 0x00007f88c06eceed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7f88c3f7d780 (LWP 2241)):
[KCrash Handler]
#6  0x00007f88bf7ead89 in QQuickItemPrivate::addToDirtyList() () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#7  0x00007f88bf7eae28 in QQuickItemPrivate::dirty(QQuickItemPrivate::DirtyType) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#8  0x00007f88bf7f5045 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#9  0x00007f88c0fd273a in QObject::event (this=0x1a40980, e=<optimized out>) at kernel/qobject.cpp:1245
#10 0x00007f88bf7f3b6b in QQuickItem::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#11 0x00007f88c1d8cb2c in QApplicationPrivate::notify_helper (this=0xc8f560, receiver=0x1a40980, e=0x7f8894107d00) at kernel/qapplication.cpp:3720
#12 0x00007f88c1d92000 in QApplication::notify (this=0x7ffc1189df60, receiver=0x1a40980, e=0x7f8894107d00) at kernel/qapplication.cpp:3503
#13 0x00007f88c0fa0c2b in QCoreApplication::notifyInternal (this=0x7ffc1189df60, receiver=0x1a40980, event=event@entry=0x7f8894107d00) at kernel/qcoreapplication.cpp:935
#14 0x00007f88c0fa2c9b in sendEvent (event=0x7f8894107d00, 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=0xc8e780) at kernel/qcoreapplication.cpp:1552
#16 0x00007f88c0fa3298 in QCoreApplication::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0) at kernel/qcoreapplication.cpp:1410
#17 0x00007f88c0ff9843 in postEventSourceDispatch (s=0xd06b00) at kernel/qeventdispatcher_glib.cpp:271
#18 0x00007f88bd3f6c3d in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#19 0x00007f88bd3f6f20 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#20 0x00007f88bd3f6fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#21 0x00007f88c0ff9c57 in QEventDispatcherGlib::processEvents (this=0xd05910, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#22 0x00007f88c0f9e3e2 in QEventLoop::exec (this=this@entry=0x7ffc1189de40, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#23 0x00007f88c0fa602c in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1188
#24 0x00007f88c17c731c in QGuiApplication::exec () at kernel/qguiapplication.cpp:1510
#25 0x00007f88c1d887a5 in QApplication::exec () at kernel/qapplication.cpp:2956
#26 0x000000000040ef5b in main (argc=1, argv=<optimized out>) at ../../app/main.cpp:55

Reported using DrKonqi