Bug 355136

Application: systemsettings5 (5.4.1)

Qt Version: 5.4.2
Operating System: Linux 4.2.0-17-generic x86_64
Distribution: Ubuntu 15.10

-- Information about the crash:
- What I was doing when the application crashed:
Change screen settings settings (Resolution and extended screen)

The crash can be reproduced every time.

-- Backtrace:
Application: Preferencias del sistema (systemsettings5), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f49dc4c7800 (LWP 2228))]

Thread 2 (Thread 0x7f49c92eb700 (LWP 2229)):
#0  0x00007f49d8c5d8dd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f49d696dbd2 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007f49d696f74f in xcb_wait_for_event () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007f49cc084a39 in QXcbEventReader::run (this=0x11eae00) at qxcbconnection.cpp:1105
#4  0x00007f49d93502be in QThreadPrivate::start (arg=0x11eae00) at thread/qthread_unix.cpp:337
#5  0x00007f49d60f86aa in start_thread (arg=0x7f49c92eb700) at pthread_create.c:333
#6  0x00007f49d8c68eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7f49dc4c7800 (LWP 2228)):
[KCrash Handler]
#6  0x00007f49d7fa1f9f in QQuickItemPrivate::addToDirtyList() () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#7  0x00007f49d7fa2053 in QQuickItemPrivate::dirty(QQuickItemPrivate::DirtyType) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#8  0x00007f49d7fac935 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#9  0x00007f49d9561651 in QObject::event (this=0x1c82100, e=<optimized out>) at kernel/qobject.cpp:1245
#10 0x00007f49d7fac10b in QQuickItem::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#11 0x00007f49da9b3b8c in QApplicationPrivate::notify_helper (this=this@entry=0x11bcca0, receiver=receiver@entry=0x1c82100, e=e@entry=0x7f49a81b1200) at kernel/qapplication.cpp:3720
#12 0x00007f49da9b9230 in QApplication::notify (this=0x7ffd554a31b0, receiver=0x1c82100, e=0x7f49a81b1200) at kernel/qapplication.cpp:3503
#13 0x00007f49d952ff1b in QCoreApplication::notifyInternal (this=0x7ffd554a31b0, receiver=0x1c82100, event=event@entry=0x7f49a81b1200) at kernel/qcoreapplication.cpp:935
#14 0x00007f49d9532057 in QCoreApplication::sendEvent (event=0x7f49a81b1200, 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=0x11bc2e0) at kernel/qcoreapplication.cpp:1552
#16 0x00007f49d9532588 in QCoreApplication::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0) at kernel/qcoreapplication.cpp:1410
#17 0x00007f49d9586e73 in postEventSourceDispatch (s=0x122c7f0) at kernel/qeventdispatcher_glib.cpp:271
#18 0x00007f49d5bd8ff7 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#19 0x00007f49d5bd9250 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#20 0x00007f49d5bd92fc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#21 0x00007f49d958727f in QEventDispatcherGlib::processEvents (this=0x123cfa0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#22 0x00007f49d952d75a in QEventLoop::exec (this=this@entry=0x7ffd554a3090, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#23 0x00007f49d95352cc in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1188
#24 0x00007f49da40000c in QGuiApplication::exec () at kernel/qguiapplication.cpp:1510
#25 0x00007f49da9b0025 in QApplication::exec () at kernel/qapplication.cpp:2956
#26 0x000000000040f04b in main (argc=1, argv=<optimized out>) at ../../app/main.cpp:55

Possible duplicates by query: bug 354851, bug 354421, bug 354378, bug 354254, bug 354150.

Reported using DrKonqi