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:
- What I was doing when the application crashed:
Crashed after setting OpenGL 2.0 to 3.1
- Custom settings of the application:
setting OpenGL 2.0 to 3.1 and vSync from automatic to forced

The crash does not seem to be reproducible.

-- 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 0x7f0806bb6780 (LWP 30482))]

Thread 2 (Thread 0x7f07f424d700 (LWP 30483)):
#0  0x00007f08033208dd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f080163ab72 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007f080163c64f in xcb_wait_for_event () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007f07f7007099 in QXcbEventReader::run (this=0x11a0a40) at qxcbconnection.cpp:1105
#4  0x00007f08039a1b0e in QThreadPrivate::start (arg=0x11a0a40) at thread/qthread_unix.cpp:337
#5  0x00007f08005546aa in start_thread (arg=0x7f07f424d700) at pthread_create.c:333
#6  0x00007f080332beed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7f0806bb6780 (LWP 30482)):
[KCrash Handler]
#6  0x00007f080243dde4 in QQuickWindow::maybeUpdate() () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#7  0x00007f0802429e28 in QQuickItemPrivate::dirty(QQuickItemPrivate::DirtyType) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#8  0x00007f0802434045 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#9  0x00007f0803c1173a in QObject::event (this=0x1b84c30, e=<optimized out>) at kernel/qobject.cpp:1245
#10 0x00007f0802432b6b in QQuickItem::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#11 0x00007f08049cbb2c in QApplicationPrivate::notify_helper (this=0x1173550, receiver=0x1b84c30, e=0x7f07e00b9750) at kernel/qapplication.cpp:3720
#12 0x00007f08049d1000 in QApplication::notify (this=0x7fff1000ba10, receiver=0x1b84c30, e=0x7f07e00b9750) at kernel/qapplication.cpp:3503
#13 0x00007f0803bdfc2b in QCoreApplication::notifyInternal (this=0x7fff1000ba10, receiver=0x1b84c30, event=event@entry=0x7f07e00b9750) at kernel/qcoreapplication.cpp:935
#14 0x00007f0803be1c9b in sendEvent (event=0x7f07e00b9750, 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=0x1172770) at kernel/qcoreapplication.cpp:1552
#16 0x00007f0803be2298 in QCoreApplication::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0) at kernel/qcoreapplication.cpp:1410
#17 0x00007f0803c38843 in postEventSourceDispatch (s=0x11e4040) at kernel/qeventdispatcher_glib.cpp:271
#18 0x00007f0800035c3d in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#19 0x00007f0800035f20 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#20 0x00007f0800035fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#21 0x00007f0803c38c57 in QEventDispatcherGlib::processEvents (this=0x11e4020, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#22 0x00007f0803bdd3e2 in QEventLoop::exec (this=this@entry=0x7fff1000b8f0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#23 0x00007f0803be502c in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1188
#24 0x00007f080440631c in QGuiApplication::exec () at kernel/qguiapplication.cpp:1510
#25 0x00007f08049c77a5 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