Application: systemsettings (1.0)
KDE Platform Version: 4.8.3 (4.8.3) "release 504"
Qt Version: 4.8.1
Operating System: Linux 3.1.10-1.9-desktop i686
Distribution: "openSUSE 12.1 (i586)"

-- Information about the crash:
The composition with OpenGL (the default) has sent in KWin crashes in the past.
This is probably due to a driver bug.

The crash can be reproduced every time.

-- Backtrace:
Application: Impostazioni di sistema (systemsettings), signal: Segmentation fault
[KCrash Handler]
#6  0xb1d175ea in nv50_screen_fence_update (pscreen=0x8611220) at nv50_screen.c:269
#7  0xb1d59309 in nouveau_fence_update (screen=0x8611220, flushed=1 '\001') at nouveau_fence.c:141
#8  0xb1d19767 in nv50_default_flush_notify (chan=0x8613e90) at nv50_context.c:68
#9  0xb29b93a1 in nouveau_pushbuf_flush (chan=0x8613e90, min=0) at nouveau_pushbuf.c:276
#10 0xb29b9720 in FIRE_RING (chan=0x8613e90) at nouveau_pushbuf.h:101
#11 nouveau_grobj_free (grobj=0x86114f0) at nouveau_grobj.c:102
#12 0xb1d177ee in nv50_screen_destroy (pscreen=0x8611220) at nv50_screen.c:235
#13 0xb1cda595 in dri_destroy_screen_helper (screen=0x84c5198) at dri_screen.c:352
#14 0xb1cda63c in dri_destroy_screen (sPriv=0x84c57b0) at dri_screen.c:362
#15 0xb1cd60af in driDestroyScreen (psp=0x84c57b0) at ../common/dri_util.c:732
#16 0xb29401d4 in dri2_terminate (drv=0x84c7c28, disp=0x86126b8) at egl_dri2.c:582
#17 0xb29384f5 in eglTerminate (dpy=0x86126b8) at eglapi.c:351
#18 0xb29e3156 in KWin::CompositingPrefs::deleteEGLContext (this=0x83ed7ac) at /usr/src/debug/kde-workspace-4.8.3/kwin/compositingprefs.cpp:372
#19 0xb29e3494 in KWin::CompositingPrefs::detect (this=0x83ed7ac) at /usr/src/debug/kde-workspace-4.8.3/kwin/compositingprefs.cpp:173
#20 0xb29d6212 in KWin::KWinCompositingConfig::updateStatusUI (this=0x83ed678, compositingIsPossible=true) at /usr/src/debug/kde-workspace-4.8.3/kwin/kcmkwin/kwincompositing/main.cpp:369
#21 0xb29d8fe3 in KWin::KWinCompositingConfig::load (this=0x83ed678) at /usr/src/debug/kde-workspace-4.8.3/kwin/kcmkwin/kwincompositing/main.cpp:387
#22 0xb29d56e4 in KWin::KWinCompositingConfig::rearmGlSupport (this=0x83ed678) at /usr/src/debug/kde-workspace-4.8.3/kwin/kcmkwin/kwincompositing/main.cpp:303
#23 0xb6387a0f in QMetaObject::activate (sender=0x840d6c8, m=0xb73038a8, local_signal_index=2, argv=0xbfe0d4b8) at kernel/qobject.cpp:3556
#24 0xb70b1ebd in QAbstractButton::clicked (this=0x840d6c8, _t1=false) at .moc/release-shared/moc_qabstractbutton.cpp:220
#25 0xb6da3afd in QAbstractButtonPrivate::emitClicked (this=0x84116b0) at widgets/qabstractbutton.cpp:548
#26 0xb6da515b in QAbstractButtonPrivate::click (this=0x84116b0) at widgets/qabstractbutton.cpp:541
#27 0xb6da5416 in QAbstractButton::mouseReleaseEvent (this=0x840d6c8, e=0xbfe0db84) at widgets/qabstractbutton.cpp:1123
#28 0xb69d3a17 in QWidget::event (this=0x840d6c8, event=0xbfe0db84) at kernel/qwidget.cpp:8362
#29 0xb6da46c9 in QAbstractButton::event (this=0x840d6c8, e=0xbfe0db84) at widgets/qabstractbutton.cpp:1082
#30 0xb6e48ac8 in QPushButton::event (this=0x840d6c8, e=0xbfe0db84) at widgets/qpushbutton.cpp:683
#31 0xb6979504 in notify_helper (e=0xbfe0db84, receiver=0x840d6c8, this=0x8087400) at kernel/qapplication.cpp:4554
#32 QApplicationPrivate::notify_helper (this=0x8087400, receiver=0x840d6c8, e=0xbfe0db84) at kernel/qapplication.cpp:4526
#33 0xb697f33c in QApplication::notify (this=0x8087400, receiver=0x840d6c8, e=0xbfe0db84) at kernel/qapplication.cpp:4097
#34 0xb750fbf1 in KApplication::notify (this=0xbfe0e3ec, receiver=0x840d6c8, event=0xbfe0db84) at /usr/src/debug/kdelibs-4.8.3/kdeui/kernel/kapplication.cpp:311
#35 0xb63711ae in QCoreApplication::notifyInternal (this=0xbfe0e3ec, receiver=0x840d6c8, event=0xbfe0db84) at kernel/qcoreapplication.cpp:876
#36 0xb697a4c0 in sendEvent (event=<optimized out>, receiver=<optimized out>) at ../../src/corelib/kernel/qcoreapplication.h:231
#37 QApplicationPrivate::sendMouseEvent (receiver=0x840d6c8, event=0xbfe0db84, alienWidget=0x840d6c8, nativeWidget=0x80821a0, buttonDown=0xb730ccb4, lastMouseReceiver=..., spontaneous=true) at kernel/qapplication.cpp:3165
#38 0xb6a036b4 in QETWidget::translateMouseEvent (this=0x80821a0, event=0xbfe0e03c) at kernel/qapplication_x11.cpp:4513
#39 0xb6a0227e in QApplication::x11ProcessEvent (this=0xbfe0e3ec, event=0xbfe0e03c) at kernel/qapplication_x11.cpp:3636
#40 0xb6a2d93c in x11EventSourceDispatch (s=0x8089fb0, callback=0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#41 0xb5744e2f in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#42 0xb5745560 in ?? () from /usr/lib/libglib-2.0.so.0
#43 0xb57457fa in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#44 0xb63a3e57 in QEventDispatcherGlib::processEvents (this=0x8060cd0, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#45 0xb6a2d53a in QGuiEventDispatcherGlib::processEvents (this=0x8060cd0, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#46 0xb636fd1d in QEventLoop::processEvents (this=0xbfe0e344, flags=...) at kernel/qeventloop.cpp:149
#47 0xb636ffb9 in QEventLoop::exec (this=0xbfe0e344, flags=...) at kernel/qeventloop.cpp:204
#48 0xb637520a in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1148
#49 0xb6977374 in QApplication::exec () at kernel/qapplication.cpp:3815
#50 0x08050d18 in ?? ()
#51 0xb5fad003 in __libc_start_main () from /lib/libc.so.6
#52 0x08050d5d in _start ()

Reported using DrKonqi