Bug 360592

Application: systemsettings5 (5.4.1)

Qt Version: 5.4.2
Operating System: Linux 4.2.0-34-generic x86_64
Distribution: Ubuntu 15.10

-- Information about the crash:
- What I was doing when the application crashed: Went to Display and Monitor section. Just clicked on each of the 3 items on the side, didn't want to change anything and had just clicked BACK or HOME to go back to the main settings.

-- 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 0x7f1a89ca6800 (LWP 2874))]

Thread 4 (Thread 0x7f1a7995d700 (LWP 2875)):
#0  0x00007f1a863f188d in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f1a840cfbd2 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007f1a840d174f in xcb_wait_for_event () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007f1a7c76ea39 in QXcbEventReader::run (this=0xd5d180) at qxcbconnection.cpp:1105
#4  0x00007f1a86af02be in QThreadPrivate::start (arg=0xd5d180) at thread/qthread_unix.cpp:337
#5  0x00007f1a838456aa in start_thread (arg=0x7f1a7995d700) at pthread_create.c:333
#6  0x00007f1a863fce9d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 3 (Thread 0x7f1a67e15700 (LWP 2877)):
#0  0x00007f1a863ed44d in read () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f1a833634e0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f1a8331fcd4 in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f1a83320190 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f1a833202fc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f1a86d2729b in QEventDispatcherGlib::processEvents (this=0x7f1a600008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#6  0x00007f1a86ccd75a in QEventLoop::exec (this=this@entry=0x7f1a67e14da0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#7  0x00007f1a86aeb3d4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#8  0x00007f1a85452f85 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#9  0x00007f1a86af02be in QThreadPrivate::start (arg=0x128d270) at thread/qthread_unix.cpp:337
#10 0x00007f1a838456aa in start_thread (arg=0x7f1a67e15700) at pthread_create.c:333
#11 0x00007f1a863fce9d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7f1a55fc5700 (LWP 2883)):
#0  0x00007f1a83364869 in g_mutex_lock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f1a833200f0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f1a833202fc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f1a86d2729b in QEventDispatcherGlib::processEvents (this=0x7f1a500008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#4  0x00007f1a86ccd75a in QEventLoop::exec (this=this@entry=0x7f1a55fc4da0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007f1a86aeb3d4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#6  0x00007f1a85452f85 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007f1a86af02be in QThreadPrivate::start (arg=0x1ab3480) at thread/qthread_unix.cpp:337
#8  0x00007f1a838456aa in start_thread (arg=0x7f1a55fc5700) at pthread_create.c:333
#9  0x00007f1a863fce9d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7f1a89ca6800 (LWP 2874)):
[KCrash Handler]
#6  0x00007f1a857376d0 in QQuickWindow::maybeUpdate() () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#7  0x00007f1a85724053 in QQuickItemPrivate::dirty(QQuickItemPrivate::DirtyType) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#8  0x00007f1a8572e935 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#9  0x00007f1a86d01651 in QObject::event (this=0x2f2a920, e=<optimized out>) at kernel/qobject.cpp:1245
#10 0x00007f1a8572e10b in QQuickItem::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#11 0x00007f1a8816fb8c in QApplicationPrivate::notify_helper (this=this@entry=0xd43b30, receiver=receiver@entry=0x2f2a920, e=e@entry=0x7f1a44665190) at kernel/qapplication.cpp:3720
#12 0x00007f1a88175230 in QApplication::notify (this=0x7ffd5ccd8200, receiver=0x2f2a920, e=0x7f1a44665190) at kernel/qapplication.cpp:3503
#13 0x00007f1a86ccff1b in QCoreApplication::notifyInternal (this=0x7ffd5ccd8200, receiver=0x2f2a920, event=event@entry=0x7f1a44665190) at kernel/qcoreapplication.cpp:935
#14 0x00007f1a86cd2057 in QCoreApplication::sendEvent (event=0x7f1a44665190, 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=0xd43240) at kernel/qcoreapplication.cpp:1552
#16 0x00007f1a86cd2588 in QCoreApplication::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0) at kernel/qcoreapplication.cpp:1410
#17 0x00007f1a86d26e73 in postEventSourceDispatch (s=0xd87530) at kernel/qeventdispatcher_glib.cpp:271
#18 0x00007f1a8331fff7 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#19 0x00007f1a83320250 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#20 0x00007f1a833202fc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#21 0x00007f1a86d2727f in QEventDispatcherGlib::processEvents (this=0xd978d0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#22 0x00007f1a86ccd75a in QEventLoop::exec (this=this@entry=0x7ffd5ccd80e0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#23 0x00007f1a86cd52cc in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1188
#24 0x000000000040f04b in main ()

Possible duplicates by query: bug 354535, bug 352905, bug 352774, bug 352402, bug 351926.

Reported using DrKonqi