Application: systemsettings (1.0)
KDE Platform Version: 4.4.2 (KDE 4.4.2)
Qt Version: 4.6.2
Operating System: Linux 2.6.32-21-generic x86_64
Distribution: Ubuntu 10.04 LTS

-- Information about the crash:
This system error occurred when upgrading the version 9.10 to kubuntu 10.04, and install the xfce desktop.

The crash can be reproduced every time.

 -- Backtrace:
Application: Configuración del sistema (systemsettings), signal: Segmentation fault
[Current thread is 1 (Thread 0x7f45fd678760 (LWP 7359))]

Thread 2 (Thread 0x7f45ee02f710 (LWP 7360)):
#0  0x00007f45f878aa2d in __pthread_mutex_unlock_usercnt (mutex=0x1252e78) at pthread_mutex_unlock.c:52
#1  __pthread_mutex_unlock (mutex=0x1252e78) at pthread_mutex_unlock.c:290
#2  0x00007f45f7e13ea5 in g_main_context_prepare () from /lib/libglib-2.0.so.0
#3  0x00007f45f7e14318 in ?? () from /lib/libglib-2.0.so.0
#4  0x00007f45f7e148fc in g_main_context_iteration () from /lib/libglib-2.0.so.0
#5  0x00007f45fb338566 in QEventDispatcherGlib::processEvents (this=0x1252ab0, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:414
#6  0x00007f45fb30d992 in QEventLoop::processEvents (this=<value optimized out>, flags=) at kernel/qeventloop.cpp:149
#7  0x00007f45fb30dd6c in QEventLoop::exec (this=0x7f45ee02edb0, flags=) at kernel/qeventloop.cpp:201
#8  0x00007f45fb217d59 in QThread::exec (this=<value optimized out>) at thread/qthread.cpp:487
#9  0x00007f45fb2ee178 in QInotifyFileSystemWatcherEngine::run (this=0x1251c80) at io/qfilesystemwatcher_inotify.cpp:248
#10 0x00007f45fb21a775 in QThreadPrivate::start (arg=0x1251c80) at thread/qthread_unix.cpp:248
#11 0x00007f45f87869ca in start_thread (arg=<value optimized out>) at pthread_create.c:300
#12 0x00007f45fabf169d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#13 0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f45fd678760 (LWP 7359)):
[KCrash Handler]
#5  0x00007f45ed49412e in XF86DRIQueryVersion () from /usr/lib/fglrx/libGL.so.1
#6  0x00007f45ed4942c9 in XF86DRIQueryExtension () from /usr/lib/fglrx/libGL.so.1
#7  0x00007f45ed493c70 in ?? () from /usr/lib/fglrx/libGL.so.1
#8  0x00007f45ed473ff8 in ?? () from /usr/lib/fglrx/libGL.so.1
#9  0x00007f45ed46e146 in glXChooseVisual () from /usr/lib/fglrx/libGL.so.1
#10 0x00007f45dfdd670a in KSWidget (this=0x133e6a0, parent=<value optimized out>, wf=<value optimized out>) at ../../../kcontrol/screensaver/kswidget.cpp:49
#11 0x00007f45dfdc8c54 in KSSMonitor (this=0x1428d00) at ../../../kcontrol/screensaver/kssmonitor.h:9
#12 KScreenSaver::slotPreviewExited (this=0x1428d00) at ../../../kcontrol/screensaver/scrnsave.cpp:505
#13 0x00007f45dfdcb108 in KScreenSaver::findSavers (this=0x1428d00) at ../../../kcontrol/screensaver/scrnsave.cpp:473
#14 0x00007f45dfdcbf7c in KScreenSaver::qt_metacall (this=0x1428d00, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fffef07edc0) at ./scrnsave.moc:104
#15 0x00007f45fb321e3f in QMetaObject::activate (sender=0x13a5860, m=<value optimized out>, local_signal_index=<value optimized out>, argv=0x0) at kernel/qobject.cpp:3293
#16 0x00007f45fb31ea63 in QObject::event (this=0x13a5860, e=0x7fffef07f510) at kernel/qobject.cpp:1212
#17 0x00007f45fbefc22c in QApplicationPrivate::notify_helper (this=0xe09840, receiver=0x13a5860, e=0x7fffef07f510) at kernel/qapplication.cpp:4300
#18 0x00007f45fbf026fb in QApplication::notify (this=0x7fffef07f860, receiver=0x13a5860, e=0x7fffef07f510) at kernel/qapplication.cpp:4183
#19 0x00007f45fcc07526 in KApplication::notify (this=0x7fffef07f860, receiver=0x13a5860, event=0x7fffef07f510) at ../../kdeui/kernel/kapplication.cpp:302
#20 0x00007f45fb30f06c in QCoreApplication::notifyInternal (this=0x7fffef07f860, receiver=0x13a5860, event=0x7fffef07f510) at kernel/qcoreapplication.cpp:704
#21 0x00007f45fb33bd42 in QCoreApplication::sendEvent (this=0xe0cfc0) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#22 QTimerInfoList::activateTimers (this=0xe0cfc0) at kernel/qeventdispatcher_unix.cpp:603
#23 0x00007f45fb338824 in timerSourceDispatch (source=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:184
#24 0x00007f45f7e108c2 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#25 0x00007f45f7e14748 in ?? () from /lib/libglib-2.0.so.0
#26 0x00007f45f7e148fc in g_main_context_iteration () from /lib/libglib-2.0.so.0
#27 0x00007f45fb338513 in QEventDispatcherGlib::processEvents (this=0xde1770, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:412
#28 0x00007f45fbfac46e in QGuiEventDispatcherGlib::processEvents (this=0xe2ec20, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:204
#29 0x00007f45fb30d992 in QEventLoop::processEvents (this=<value optimized out>, flags=) at kernel/qeventloop.cpp:149
#30 0x00007f45fb30dd6c in QEventLoop::exec (this=0x7fffef07f7b0, flags=) at kernel/qeventloop.cpp:201
#31 0x00007f45fb311aab in QCoreApplication::exec () at kernel/qcoreapplication.cpp:981
#32 0x00000000004110d9 in main (argc=<value optimized out>, argv=<value optimized out>) at ../../../systemsettings/app/main.cpp:49

Possible duplicates by query: bug 236045, bug 235966, bug 234689, bug 232254, bug 230702.

Reported using DrKonqi