Application: systemsettings (1.0)
KDE Platform Version: 4.6.2 (4.6.2)
Qt Version: 4.7.2
Operating System: Linux 2.6.38-8-generic x86_64
Distribution: Ubuntu 11.04

-- Information about the crash:
- What I was doing when the application crashed:

I tried to launch Login screen in my System settings. It always crashes. I don't know if this is related but when I start my Kubuntu 11.04, the loading screen is very ascetic/spartan, just a simple text "Kubuntu 11.04_" on blue background. I think it has been since the second or third time I launched my Kubuntu, but on the very first time(s) it had a splash screen with decent graphics and animation.

The crash can be reproduced every time.

-- Backtrace:
Application: Järjestelmäasetukset (systemsettings), signal: Segmentation fault
[Current thread is 1 (Thread 0x7f2a12295780 (LWP 3943))]

Thread 3 (Thread 0x7f29fb904700 (LWP 3944)):
#0  0x00007f2a0f7c6f03 in __poll (fds=<value optimized out>, nfds=<value optimized out>, timeout=<value optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007f2a0d543104 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f2a0d543639 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f2a0ff0e446 in QEventDispatcherGlib::processEvents (this=0x1ed3820, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:424
#4  0x00007f2a0fee2882 in QEventLoop::processEvents (this=<value optimized out>, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007f2a0fee2abc in QEventLoop::exec (this=0x7f29fb903dd0, flags=...) at kernel/qeventloop.cpp:201
#6  0x00007f2a0fdf9924 in QThread::exec (this=<value optimized out>) at thread/qthread.cpp:492
#7  0x00007f2a0fec4c2f in QInotifyFileSystemWatcherEngine::run (this=0x1ed31a0) at io/qfilesystemwatcher_inotify.cpp:248
#8  0x00007f2a0fdfc175 in QThreadPrivate::start (arg=0x1ed31a0) at thread/qthread_unix.cpp:320
#9  0x00007f2a0da0ed8c in start_thread (arg=0x7f29fb904700) at pthread_create.c:304
#10 0x00007f2a0f7d404d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7f29eb0d8700 (LWP 3945)):
#0  0x00007f2a0f7c6f03 in __poll (fds=<value optimized out>, nfds=<value optimized out>, timeout=<value optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007f2a0d543104 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f2a0d5439f2 in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f29eb7cac44 in ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#4  0x00007f2a0d56a3e4 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f2a0da0ed8c in start_thread (arg=0x7f29eb0d8700) at pthread_create.c:304
#6  0x00007f2a0f7d404d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#7  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f2a12295780 (LWP 3943)):
[KCrash Handler]
#6  0x00007f2a118da0d7 in KCModule::setNeedsAuthorization (this=0x200e430, needsAuth=<value optimized out>) at ../../kdeui/widgets/kcmodule.cpp:150
#7  0x00007f29faeed685 in KDModule::KDModule (this=0x200e430, parent=<value optimized out>) at ../../../kdm/kcm/main.cpp:275
#8  0x00007f29faeef6f4 in KPluginFactory::createInstance<KDModule, QWidget> (parentWidget=<value optimized out>, parent=<value optimized out>, args=...) at /usr/include/kpluginfactory.h:473
#9  0x00007f2a106ac5a9 in KPluginFactory::create (this=0x1ffb9d0, iface=0x7f2a119a94c0 "KCModule", parentWidget=0x0, parent=0x1fda3b0, args=..., keyword=<value optimized out>) at ../../kdecore/util/kpluginfactory.cpp:203
#10 0x00007f2a11e8a2f9 in create<KCModule> (mod=..., report=KCModuleLoader::Inline, parent=0x1fda3b0, args=...) at ../../kdecore/util/kpluginfactory.h:527
#11 createInstance<KCModule> (mod=..., report=KCModuleLoader::Inline, parent=0x1fda3b0, args=...) at ../../kdecore/services/kservice.h:551
#12 createInstance<KCModule> (mod=..., report=KCModuleLoader::Inline, parent=0x1fda3b0, args=...) at ../../kdecore/services/kservice.h:528
#13 KCModuleLoader::loadModule (mod=..., report=KCModuleLoader::Inline, parent=0x1fda3b0, args=...) at ../../kutils/kcmoduleloader.cpp:89
#14 0x00007f2a11e8f288 in KCModuleProxyPrivate::loadModule (this=0x1edf960) at ../../kutils/kcmoduleproxy.cpp:106
#15 0x00007f2a11e8ff05 in KCModuleProxy::realModule (this=<value optimized out>) at ../../kutils/kcmoduleproxy.cpp:83
#16 0x00007f2a11c66bdc in ModuleView::stateChanged (this=0x1d255e0) at ../../../systemsettings/core/ModuleView.cpp:379
#17 0x00007f2a11c68448 in ModuleView::qt_metacall (this=0x1d255e0, _c=QMetaObject::InvokeMetaMethod, _id=8, _a=0x7fff63540760) at ./ModuleView.moc:99
#18 0x00007f2a0fef85f8 in QMetaObject::activate (sender=0x1d25570, m=<value optimized out>, local_signal_index=<value optimized out>, argv=0x7fff63540760) at kernel/qobject.cpp:3287
#19 0x00007f2a1186b76c in KPageWidget::currentPageChanged (this=<value optimized out>, _t1=0x1ee2860, _t2=0x0) at ./kpagewidget.moc:96
#20 0x00007f2a1186b8f8 in KPageWidget::qt_metacall (this=0x1d25570, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fff63540870) at ./kpagewidget.moc:84
#21 0x00007f2a0fef85f8 in QMetaObject::activate (sender=0x1d25570, m=<value optimized out>, local_signal_index=<value optimized out>, argv=0x7fff63540870) at kernel/qobject.cpp:3287
#22 0x00007f2a11868007 in KPageView::currentPageChanged (this=<value optimized out>, _t1=<value optimized out>, _t2=<value optimized out>) at ./kpageview.moc:140
#23 0x00007f2a11868542 in KPageViewPrivate::_k_pageSelected (this=0x1cea270, index=<value optimized out>, previous=...) at ../../kdeui/paged/kpageview.cpp:244
#24 0x00007f2a11868702 in KPageView::qt_metacall (this=0x1d25570, _c=QMetaObject::InvokeMetaMethod, _id=3, _a=0x7fff63540a80) at ./kpageview.moc:100
#25 0x00007f2a1186b8c0 in KPageWidget::qt_metacall (this=0x1d25570, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fff63540a80) at ./kpagewidget.moc:76
#26 0x00007f2a0fef85f8 in QMetaObject::activate (sender=0x1cef610, m=<value optimized out>, local_signal_index=<value optimized out>, argv=0x7fff63540a80) at kernel/qobject.cpp:3287
#27 0x00007f2a11080407 in QItemSelectionModel::selectionChanged (this=<value optimized out>, _t1=<value optimized out>, _t2=<value optimized out>) at .moc/release-shared/moc_qitemselectionmodel.cpp:152
#28 0x00007f2a11086f7a in QItemSelectionModel::emitSelectionChanged (this=0x1cef610, newSelection=..., oldSelection=...) at itemviews/qitemselectionmodel.cpp:1538
#29 0x00007f2a1108734f in QItemSelectionModel::select (this=0x1cef610, selection=<value optimized out>, command=...) at itemviews/qitemselectionmodel.cpp:1101
#30 0x00007f2a1108233a in QItemSelectionModel::select (this=0x1cef610, index=<value optimized out>, command=...) at itemviews/qitemselectionmodel.cpp:976
#31 0x00007f2a11080677 in QItemSelectionModel::setCurrentIndex (this=0x1cef610, index=..., command=<value optimized out>) at itemviews/qitemselectionmodel.cpp:1168
#32 0x00007f2a1186726f in KPageViewPrivate::_k_rebuildGui (this=0x1cea270) at ../../kdeui/paged/kpageview.cpp:70
#33 0x00007f2a11868275 in KPageViewPrivate::_k_modelChanged (this=0x1cea270) at ../../kdeui/paged/kpageview.cpp:190
#34 0x00007f2a11868712 in KPageView::qt_metacall (this=0x1d25570, _c=QMetaObject::InvokeMetaMethod, _id=2, _a=0x7fff63540fd0) at ./kpageview.moc:99
#35 0x00007f2a1186b8c0 in KPageWidget::qt_metacall (this=0x1d25570, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fff63540fd0) at ./kpagewidget.moc:76
#36 0x00007f2a0fef85f8 in QMetaObject::activate (sender=0x1d2db90, m=<value optimized out>, local_signal_index=<value optimized out>, argv=0x0) at kernel/qobject.cpp:3287
#37 0x00007f2a1186c9cb in KPageWidgetModel::addPage (this=0x1d2db90, item=0x1ee2860) at ../../kdeui/paged/kpagewidgetmodel.cpp:401
#38 0x00007f2a11c6718f in ModuleView::addModule (this=0x1d255e0, module=0x1d33588) at ../../../systemsettings/core/ModuleView.cpp:220
#39 0x00007f2a11c67971 in ModuleView::loadModule (this=0x1d255e0, menuItem=<value optimized out>) at ../../../systemsettings/core/ModuleView.cpp:174
#40 0x00007f29fda18490 in IconMode::changeModule (this=0x1cef0f0, activeModule=...) at ../../../systemsettings/icons/IconMode.cpp:133
#41 0x00007f29fda187f1 in IconMode::qt_metacall (this=0x1cef0f0, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fff63541630) at ./IconMode.moc:80
#42 0x00007f2a0fef85f8 in QMetaObject::activate (sender=0x18f5170, m=<value optimized out>, local_signal_index=<value optimized out>, argv=0x7fff63541630) at kernel/qobject.cpp:3287
#43 0x00007f2a1102ea45 in QAbstractItemView::activated (this=<value optimized out>, _t1=<value optimized out>) at .moc/release-shared/moc_qabstractitemview.cpp:345
#44 0x00007f2a1102ef4f in QAbstractItemView::mouseReleaseEvent (this=0x18f5170, event=0x7fff635425e0) at itemviews/qabstractitemview.cpp:1805
#45 0x00007f2a1104918e in QListView::mouseReleaseEvent (this=<value optimized out>, e=<value optimized out>) at itemviews/qlistview.cpp:796
#46 0x00007f2a1180db8e in KCategorizedView::mouseReleaseEvent (this=0x18f5170, event=0x7fff635425e0) at ../../kdeui/itemviews/kcategorizedview.cpp:1034
#47 0x00007f2a10b6acb8 in QWidget::event (this=0x18f5170, event=0x7fff635425e0) at kernel/qwidget.cpp:8259
#48 0x00007f2a10f1aa66 in QFrame::event (this=0x18f5170, e=0x7fff635425e0) at widgets/qframe.cpp:557
#49 0x00007f2a1102bd7b in QAbstractItemView::viewportEvent (this=0x18f5170, event=0x7fff635425e0) at itemviews/qabstractitemview.cpp:1628
#50 0x00007f2a0fee3627 in QCoreApplicationPrivate::sendThroughObjectEventFilters (this=<value optimized out>, receiver=0x1d255b0, event=0x7fff635425e0) at kernel/qcoreapplication.cpp:846
#51 0x00007f2a10b199b1 in QApplicationPrivate::notify_helper (this=0x19122d0, receiver=0x1d255b0, e=0x7fff635425e0) at kernel/qapplication.cpp:4458
#52 0x00007f2a10b1edb3 in QApplication::notify (this=<value optimized out>, receiver=0x1d255b0, e=0x7fff635425e0) at kernel/qapplication.cpp:4023
#53 0x00007f2a11838866 in KApplication::notify (this=0x7fff635432a0, receiver=0x1d255b0, event=0x7fff635425e0) at ../../kdeui/kernel/kapplication.cpp:311
#54 0x00007f2a0fee349c in QCoreApplication::notifyInternal (this=0x7fff635432a0, receiver=0x1d255b0, event=0x7fff635425e0) at kernel/qcoreapplication.cpp:731
#55 0x00007f2a10b1aa0d in sendEvent (receiver=0x1d255b0, event=0x7fff635425e0, alienWidget=0x1d255b0, nativeWidget=0x1a7efd0, buttonDown=0x7f2a115fa218, lastMouseReceiver=..., spontaneous=true) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#56 QApplicationPrivate::sendMouseEvent (receiver=0x1d255b0, event=0x7fff635425e0, alienWidget=0x1d255b0, nativeWidget=0x1a7efd0, buttonDown=0x7f2a115fa218, lastMouseReceiver=..., spontaneous=true) at kernel/qapplication.cpp:3122
#57 0x00007f2a10b9a600 in QETWidget::translateMouseEvent (this=0x1a7efd0, event=<value optimized out>) at kernel/qapplication_x11.cpp:4556
#58 0x00007f2a10b9904a in QApplication::x11ProcessEvent (this=0x7fff635432a0, event=0x7fff63542f30) at kernel/qapplication_x11.cpp:3678
#59 0x00007f2a10bc1162 in x11EventSourceDispatch (s=0x1909ad0, callback=0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#60 0x00007f2a0d542bcd in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#61 0x00007f2a0d5433a8 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#62 0x00007f2a0d543639 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#63 0x00007f2a0ff0e3ef in QEventDispatcherGlib::processEvents (this=0x18b3490, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:422
#64 0x00007f2a10bc0dfe in QGuiEventDispatcherGlib::processEvents (this=<value optimized out>, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:204
#65 0x00007f2a0fee2882 in QEventLoop::processEvents (this=<value optimized out>, flags=...) at kernel/qeventloop.cpp:149
#66 0x00007f2a0fee2abc in QEventLoop::exec (this=0x7fff63543230, flags=...) at kernel/qeventloop.cpp:201
#67 0x00007f2a0fee6ecb in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1008
#68 0x0000000000411616 in main (argc=5, argv=<value optimized out>) at ../../../systemsettings/app/main.cpp:49

This bug may be a duplicate of or related to bug 247830.

Possible duplicates by query: bug 275369, bug 274946, bug 274723, bug 274332, bug 274152.

Reported using DrKonqi