Application: systemsettings (1.0)
KDE Platform Version: 4.4.2 (KDE 4.4.2)
Qt Version: 4.6.2
Operating System: Linux 2.6.32-22-generic x86_64
Distribution: Ubuntu 10.04 LTS

-- Information about the crash:
After I've installed the fglrx driver via konsole, compositionig became disabled. I tried to restart the X server, but the system got frozen.
Every time I try to re-enable compositioning, system settings crashes.

The crash can be reproduced every time.

 -- Backtrace:
Application: System Settings (systemsettings), signal: Segmentation fault
[Current thread is 1 (Thread 0x7fd30fa4d760 (LWP 3190))]

Thread 2 (Thread 0x7fd3005c4710 (LWP 3191)):
#0  0x00007fd30cfb3f53 in *__GI___poll (fds=<value optimized out>, nfds=<value optimized out>, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007fd30a1e34a9 in ?? () from /lib/libglib-2.0.so.0
#2  0x00007fd30a1e38fc in g_main_context_iteration () from /lib/libglib-2.0.so.0
#3  0x00007fd30d707566 in QEventDispatcherGlib::processEvents (this=0x15c3300, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:414
#4  0x00007fd30d6dc992 in QEventLoop::processEvents (this=<value optimized out>, flags=) at kernel/qeventloop.cpp:149
#5  0x00007fd30d6dcd6c in QEventLoop::exec (this=0x7fd3005c3db0, flags=) at kernel/qeventloop.cpp:201
#6  0x00007fd30d5e6d59 in QThread::exec (this=<value optimized out>) at thread/qthread.cpp:487
#7  0x00007fd30d6bd178 in QInotifyFileSystemWatcherEngine::run (this=0x157f250) at io/qfilesystemwatcher_inotify.cpp:248
#8  0x00007fd30d5e9775 in QThreadPrivate::start (arg=0x157f250) at thread/qthread_unix.cpp:248
#9  0x00007fd30ab559ca in start_thread (arg=<value optimized out>) at pthread_create.c:300
#10 0x00007fd30cfc069d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7fd30fa4d760 (LWP 3190)):
[KCrash Handler]
#5  0x00007fd2ffa2912e in XF86DRIQueryVersion () from /usr/lib/fglrx/libGL.so.1
#6  0x00007fd2ffa292c9 in XF86DRIQueryExtension () from /usr/lib/fglrx/libGL.so.1
#7  0x00007fd2ffa28c70 in ?? () from /usr/lib/fglrx/libGL.so.1
#8  0x00007fd2ffa08ff8 in ?? () from /usr/lib/fglrx/libGL.so.1
#9  0x00007fd2ffa03146 in glXChooseVisual () from /usr/lib/fglrx/libGL.so.1
#10 0x00007fd2eadd270a in KSWidget (this=0x1687a20, parent=<value optimized out>, wf=<value optimized out>) at ../../../kcontrol/screensaver/kswidget.cpp:49
#11 0x00007fd2eadc4c54 in KSSMonitor (this=0x1767640) at ../../../kcontrol/screensaver/kssmonitor.h:9
#12 KScreenSaver::slotPreviewExited (this=0x1767640) at ../../../kcontrol/screensaver/scrnsave.cpp:505
#13 0x00007fd2eadc7108 in KScreenSaver::findSavers (this=0x1767640) at ../../../kcontrol/screensaver/scrnsave.cpp:473
#14 0x00007fd2eadc7f7c in KScreenSaver::qt_metacall (this=0x1767640, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fff6e01b590) at ./scrnsave.moc:104
#15 0x00007fd30d6f0e3f in QMetaObject::activate (sender=0x1785240, m=<value optimized out>, local_signal_index=<value optimized out>, argv=0x0) at kernel/qobject.cpp:3293
#16 0x00007fd30d6eda63 in QObject::event (this=0x1785240, e=0x7fff6e01bce0) at kernel/qobject.cpp:1212
#17 0x00007fd30e2cb22c in QApplicationPrivate::notify_helper (this=0x1166700, receiver=0x1785240, e=0x7fff6e01bce0) at kernel/qapplication.cpp:4300
#18 0x00007fd30e2d16fb in QApplication::notify (this=0x7fff6e01c030, receiver=0x1785240, e=0x7fff6e01bce0) at kernel/qapplication.cpp:4183
#19 0x00007fd30efd6526 in KApplication::notify (this=0x7fff6e01c030, receiver=0x1785240, event=0x7fff6e01bce0) at ../../kdeui/kernel/kapplication.cpp:302
#20 0x00007fd30d6de06c in QCoreApplication::notifyInternal (this=0x7fff6e01c030, receiver=0x1785240, event=0x7fff6e01bce0) at kernel/qcoreapplication.cpp:704
#21 0x00007fd30d70ad42 in QCoreApplication::sendEvent (this=0x115f6a0) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#22 QTimerInfoList::activateTimers (this=0x115f6a0) at kernel/qeventdispatcher_unix.cpp:603
#23 0x00007fd30d707824 in timerSourceDispatch (source=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:184
#24 0x00007fd30a1df8c2 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#25 0x00007fd30a1e3748 in ?? () from /lib/libglib-2.0.so.0
#26 0x00007fd30a1e38fc in g_main_context_iteration () from /lib/libglib-2.0.so.0
#27 0x00007fd30d707513 in QEventDispatcherGlib::processEvents (this=0x1134770, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:412
#28 0x00007fd30e37b46e in QGuiEventDispatcherGlib::processEvents (this=0x1171220, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:204
#29 0x00007fd30d6dc992 in QEventLoop::processEvents (this=<value optimized out>, flags=) at kernel/qeventloop.cpp:149
#30 0x00007fd30d6dcd6c in QEventLoop::exec (this=0x7fff6e01bf80, flags=) at kernel/qeventloop.cpp:201
#31 0x00007fd30d6e0aab 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 236104, bug 236045, bug 235966, bug 234689, bug 232254.

Reported using DrKonqi