Application: systemsettings (4.11.2)
KDE Platform Version: 4.11.2
Qt Version: 4.8.4
Operating System: Linux 3.11.0-13-generic x86_64
Distribution: Ubuntu 13.10

-- Information about the crash:
- Clicked the star on the monitor I wanted as primary output. 
- Crash

The crash can be reproduced every time.

-- Backtrace:
Application: System Settings (systemsettings), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7fd924e267c0 (LWP 6017))]

Thread 3 (Thread 0x7fd905ac9700 (LWP 6018)):
#0  0x00007fd921e346bd in read () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007fd914a3fe61 in ?? () from /usr/lib/nvidia-319-updates/tls/libnvidia-tls.so.319.60
#2  0x00007fd91add9670 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fd91ad9a1cc in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fd91ad9a63b in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007fd91ad9a7ac in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007fd9225bba76 in QEventDispatcherGlib::processEvents (this=0x7fd9000008e0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#7  0x00007fd92258d5ef in QEventLoop::processEvents (this=this@entry=0x7fd905ac8d70, flags=...) at kernel/qeventloop.cpp:149
#8  0x00007fd92258d8e5 in QEventLoop::exec (this=this@entry=0x7fd905ac8d70, flags=...) at kernel/qeventloop.cpp:204
#9  0x00007fd92248c88f in QThread::exec (this=this@entry=0x29251d0) at thread/qthread.cpp:542
#10 0x00007fd92256ed13 in QInotifyFileSystemWatcherEngine::run (this=0x29251d0) at io/qfilesystemwatcher_inotify.cpp:265
#11 0x00007fd92248ef2f in QThreadPrivate::start (arg=0x29251d0) at thread/qthread_unix.cpp:338
#12 0x00007fd91b272f6e in start_thread (arg=0x7fd905ac9700) at pthread_create.c:311
#13 0x00007fd921e429cd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113

Thread 2 (Thread 0x7fd904c85700 (LWP 6019)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fd91f68c06b in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#2  0x00007fd91f68c0a9 in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#3  0x00007fd91b272f6e in start_thread (arg=0x7fd904c85700) at pthread_create.c:311
#4  0x00007fd921e429cd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113

Thread 1 (Thread 0x7fd924e267c0 (LWP 6017)):
[KCrash Handler]
#6  XRandRMode::size (this=0x0) at /build/buildd/libkscreen-1.0.1/backends/xrandr/xrandrmode.cpp:53
#7  0x00007fd904c901fa in XRandRConfig::applyKScreenConfig (this=0x2a16110, config=<optimized out>) at /build/buildd/libkscreen-1.0.1/backends/xrandr/xrandrconfig.cpp:168
#8  0x00007fd904ea1d4f in KScreen::Config::setConfig (config=0x2a4aa30) at /build/buildd/libkscreen-1.0.1/src/config.cpp:66
#9  0x00007fd9050ba329 in KCMKScreen::save (this=0x2a18a80) at /build/buildd/kscreen-1.0.1/kcm/src/kcm_kscreen.cpp:213
#10 0x00007fd9245602a7 in KCModuleProxy::save (this=<optimized out>) at ../../kutils/kcmoduleproxy.cpp:280
#11 0x00007fd924338453 in ModuleView::moduleSave (this=<optimized out>, module=<optimized out>) at ../../../systemsettings/core/ModuleView.cpp:289
#12 0x00007fd924339e1a in ModuleView::qt_static_metacall (_o=<optimized out>, _id=<optimized out>, _a=0x7fff1198bb10, _c=<optimized out>) at ./ModuleView.moc:72
#13 0x00007fd9225a2a58 in QMetaObject::activate (sender=sender@entry=0x2893240, m=m@entry=0x7fd923ccd2a0 <QAbstractButton::staticMetaObject>, local_signal_index=local_signal_index@entry=2, argv=argv@entry=0x7fff1198bb10) at kernel/qobject.cpp:3539
#14 0x00007fd923848732 in QAbstractButton::clicked (this=this@entry=0x2893240, _t1=false) at .moc/release-shared/moc_qabstractbutton.cpp:220
#15 0x00007fd9235abf73 in QAbstractButtonPrivate::emitClicked (this=this@entry=0x26beb90) at widgets/qabstractbutton.cpp:548
#16 0x00007fd9235ad0e3 in QAbstractButtonPrivate::click (this=this@entry=0x26beb90) at widgets/qabstractbutton.cpp:541
#17 0x00007fd9235ad1cc in QAbstractButton::mouseReleaseEvent (this=0x2893240, e=0x7fff1198c000) at widgets/qabstractbutton.cpp:1123
#18 0x00007fd92324a31e in QWidget::event (this=0x2893240, event=0x7fff1198c000) at kernel/qwidget.cpp:8375
#19 0x00007fd9231fadfc in QApplicationPrivate::notify_helper (this=this@entry=0x21e69b0, receiver=receiver@entry=0x2893240, e=e@entry=0x7fff1198c000) at kernel/qapplication.cpp:4567
#20 0x00007fd9232015ad in QApplication::notify (this=this@entry=0x7fff1198c860, receiver=receiver@entry=0x2893240, e=e@entry=0x7fff1198c000) at kernel/qapplication.cpp:4110
#21 0x00007fd923f04a6a in KApplication::notify (this=0x7fff1198c860, receiver=0x2893240, event=0x7fff1198c000) at ../../kdeui/kernel/kapplication.cpp:311
#22 0x00007fd92258e8bd in QCoreApplication::notifyInternal (this=0x7fff1198c860, receiver=receiver@entry=0x2893240, event=event@entry=0x7fff1198c000) at kernel/qcoreapplication.cpp:946
#23 0x00007fd923200d63 in sendEvent (event=<optimized out>, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#24 QApplicationPrivate::sendMouseEvent (receiver=receiver@entry=0x2893240, event=event@entry=0x7fff1198c000, alienWidget=alienWidget@entry=0x2893240, nativeWidget=nativeWidget@entry=0x23d80d0, buttonDown=buttonDown@entry=0x7fd923cdf2f8 <qt_button_down>, lastMouseReceiver=..., spontaneous=spontaneous@entry=true) at kernel/qapplication.cpp:3178
#25 0x00007fd9232757db in QETWidget::translateMouseEvent (this=this@entry=0x23d80d0, event=event@entry=0x7fff1198c380) at kernel/qapplication_x11.cpp:4631
#26 0x00007fd923275079 in QApplication::x11ProcessEvent (this=0x7fff1198c860, event=event@entry=0x7fff1198c380) at kernel/qapplication_x11.cpp:3624
#27 0x00007fd92329c922 in x11EventSourceDispatch (s=0x21e1600, callback=0x0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#28 0x00007fd91ad9a3b6 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#29 0x00007fd91ad9a708 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#30 0x00007fd91ad9a7ac in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#31 0x00007fd9225bba55 in QEventDispatcherGlib::processEvents (this=0x21e4710, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#32 0x00007fd92329c9d6 in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#33 0x00007fd92258d5ef in QEventLoop::processEvents (this=this@entry=0x7fff1198c760, flags=...) at kernel/qeventloop.cpp:149
#34 0x00007fd92258d8e5 in QEventLoop::exec (this=this@entry=0x7fff1198c760, flags=...) at kernel/qeventloop.cpp:204
#35 0x00007fd922592e5b in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1218
#36 0x00007fd9231f934c in QApplication::exec () at kernel/qapplication.cpp:3828
#37 0x000000000040aadb in main (argc=5, argv=0x7fff1198c9a8) at ../../../systemsettings/app/main.cpp:49

Reported using DrKonqi