Application: systemsettings (4.11.16)
KDE Platform Version: 4.14.5
Qt Version: 4.8.6
Operating System: Linux 4.1.8-1.mga5custom-wolves i686
Distribution: "Mageia 5"

-- Information about the crash:
When using System Setting (KDE) selecting Display and then Screen Locker, the whole System Settings application crashes. It happens when using all entry methods, every time.

The crash can be reproduced every time.

-- Backtrace:
Application: System Settings (systemsettings), signal: Segmentation fault
Using host libthread_db library "/lib/i686/libthread_db.so.1".
[Current thread is 1 (Thread 0xb0693780 (LWP 5787))]

Thread 2 (Thread 0xacd21b40 (LWP 5798)):
#0  0xffffffff in __kernel_vsyscall ()
#1  0xffffffff in pthread_cond_wait@@GLIBC_2.3.2 () at /lib/i686/libpthread.so.0
#2  0xffffffff in pthread_cond_wait@@GLIBC_2.3.2 () at /lib/i686/libc.so.6
#3  0xffffffff in QTWTF::TCMalloc_PageHeap::scavengerThread() () at /lib/libQtScript.so.4
#4  0xffffffff in  () at /lib/libQtScript.so.4
#5  0xffffffff in start_thread () at /lib/i686/libpthread.so.0
#6  0xffffffff in clone () at /lib/i686/libc.so.6

Thread 1 (Thread 0xb0693780 (LWP 5787)):
[KCrash Handler]
#6  0xffffffff in XVisualIDFromVisual () at /lib/libX11.so.6
#7  0xffffffff in qt_x11_getX11InfoForWindow(QX11Info*, QX11WindowAttributes const&) () at /lib/libQtGui.so.4
#8  0xffffffff in QWidgetPrivate::create_sys(unsigned long, bool, bool) () at /lib/libQtGui.so.4
#9  0xffffffff in QWidget::create(unsigned long, bool, bool) () at /lib/libQtGui.so.4
#10 0xffffffff in KSWidget::KSWidget(QWidget*, QFlags<Qt::WindowType>) () at /usr/lib/kde4/kcm_screensaver.so
#11 0xffffffff in KScreenSaver::slotPreviewExited() () at /usr/lib/kde4/kcm_screensaver.so
#12 0xffffffff in KScreenSaver::findSavers() () at /usr/lib/kde4/kcm_screensaver.so
#13 0xffffffff in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () at /lib/libQtCore.so.4
#14 0xffffffff in QTimer::timeout() () at /lib/libQtCore.so.4
#15 0xffffffff in QTimer::timerEvent(QTimerEvent*) () at /lib/libQtCore.so.4
#16 0xffffffff in QObject::event(QEvent*) () at /lib/libQtCore.so.4
#17 0xffffffff in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /lib/libQtGui.so.4
#18 0xffffffff in QApplication::notify(QObject*, QEvent*) () at /lib/libQtGui.so.4
#19 0xffffffff in KApplication::notify(QObject*, QEvent*) () at /lib/libkdeui.so.5
#20 0xffffffff in QCoreApplication::notifyInternal(QObject*, QEvent*) () at /lib/libQtCore.so.4
#21 0xffffffff in QTimerInfoList::activateTimers() () at /lib/libQtCore.so.4
#22 0xffffffff in timerSourceDispatch(_GSource*, int (*)(void*), void*) () at /lib/libQtCore.so.4
#23 0xffffffff in g_main_context_dispatch () at /lib/libglib-2.0.so.0
#24 0xffffffff in g_main_context_iterate.isra () at /lib/libglib-2.0.so.0
#25 0xffffffff in g_main_context_iteration () at /lib/libglib-2.0.so.0
#26 0xffffffff in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/libQtCore.so.4
#27 0xffffffff in QGuiEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/libQtGui.so.4
#28 0xffffffff in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/libQtCore.so.4
#29 0xffffffff in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/libQtCore.so.4
#30 0xffffffff in QCoreApplication::exec() () at /lib/libQtCore.so.4
#31 0xffffffff in QApplication::exec() () at /lib/libQtGui.so.4
#32 0x080504b1 in main ()

Possible duplicates by query: bug 349686.

Reported using DrKonqi