Application: kwin (4.5.1 (KDE 4.5.1) "release 3")
KDE Platform Version: 4.5.1 (KDE 4.5.1) "release 3"
Qt Version: 4.6.3
Operating System: Linux 2.6.34.7-0.3-desktop x86_64
Distribution: "openSUSE 11.3 (x86_64)"

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

The title shows it already

- Unusual behavior I noticed:
There was a message that Blur did not work for some reason.
Also I changed things in Desktop Effects because when leaving the session it took quite a while to logoff. The screen was distorted and the confirmation dialog was displayed OK, however it took a while, 10-15 seconds, before the screen became dark and I could go to another session. Shortly before the logoff was done, there was a message that checking of desktop effect took too long. So during the changing in the settings of desktop effects, I also unset this checking.

-- Backtrace:
Application: KWin (kwin), signal: Segmentation fault
[KCrash Handler]
#6  dri2DrawableGetMSC (psc=0x661dc0, pdraw=0x0, ust=0x7fff350e9638, msc=0x7fff350e9630, sbc=0x7fff350e9628) at dri2_glx.c:226
#7  0x00007fb8f68e0185 in __glXGetVideoSyncSGI (count=0x7fff350e967c) at glxcmds.c:2317
#8  0x00007fb8f8e33c21 in KWin::SceneOpenGL::waitSync (this=<value optimized out>) at /usr/src/debug/kdebase-workspace-4.5.1/kwin/scene_opengl.cpp:781
#9  0x00007fb8f8e475b5 in KWin::SceneOpenGL::flushBuffer (this=0xac64e0, mask=<value optimized out>, damage=...) at /usr/src/debug/kdebase-workspace-4.5.1/kwin/scene_opengl.cpp:793
#10 0x00007fb8f8e91530 in KWin::SceneOpenGL::paint (this=0xac64e0, damage=..., toplevels=<value optimized out>) at /usr/src/debug/kdebase-workspace-4.5.1/kwin/scene_opengl.cpp:761
#11 0x00007fb8f8e723f9 in KWin::Workspace::performCompositing (this=0x662350) at /usr/src/debug/kdebase-workspace-4.5.1/kwin/composite.cpp:454
#12 0x00007fb8f8e9fc75 in KWin::Workspace::qt_metacall (this=0x662350, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fff350e9ac0)
    at /usr/src/debug/kdebase-workspace-4.5.1/build/kwin/workspace.moc:583
#13 0x00007fb8f548fa1f in QMetaObject::activate (sender=0x662818, m=<value optimized out>, local_signal_index=<value optimized out>, argv=0x0) at kernel/qobject.cpp:3295
#14 0x00007fb8f548d22e in QObject::event (this=0x662818, e=0x7fff350ea260) at kernel/qobject.cpp:1212
#15 0x00007fb8f46504d4 in QApplicationPrivate::notify_helper (this=0x633850, receiver=0x662818, e=0x7fff350ea260) at kernel/qapplication.cpp:4302
#16 0x00007fb8f4658aca in QApplication::notify (this=<value optimized out>, receiver=0x662818, e=0x7fff350ea260) at kernel/qapplication.cpp:4185
#17 0x00007fb8f85e41e6 in KApplication::notify (this=0x7fff350ea770, receiver=0x662818, event=0x7fff350ea260) at /usr/src/debug/kdelibs-4.5.1/kdeui/kernel/kapplication.cpp:310
#18 0x00007fb8f547be4c in QCoreApplication::notifyInternal (this=0x7fff350ea770, receiver=0x662818, event=0x7fff350ea260) at kernel/qcoreapplication.cpp:726
#19 0x00007fb8f54a70c9 in sendEvent (this=0x634240) at kernel/qcoreapplication.h:215
#20 QTimerInfoList::activateTimers (this=0x634240) at kernel/qeventdispatcher_unix.cpp:618
#21 0x00007fb8f54a78c0 in QEventDispatcherUNIX::processEvents (this=0x612010, flags=...) at kernel/qeventdispatcher_unix.cpp:939
#22 0x00007fb8f46f1cbc in QEventDispatcherX11::processEvents (this=0x612010, flags=...) at kernel/qeventdispatcher_x11.cpp:152
#23 0x00007fb8f547b292 in QEventLoop::processEvents (this=<value optimized out>, flags=...) at kernel/qeventloop.cpp:149
#24 0x00007fb8f547b495 in QEventLoop::exec (this=0x7fff350ea6b0, flags=...) at kernel/qeventloop.cpp:201
#25 0x00007fb8f547f88b in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1003
#26 0x00007fb8f8e9e374 in kdemain (argc=<value optimized out>, argv=0x7fff350ea770) at /usr/src/debug/kdebase-workspace-4.5.1/kwin/main.cpp:531
#27 0x00007fb8f8a95b7d in __libc_start_main () from /lib64/libc.so.6
#28 0x0000000000400699 in _start () at ../sysdeps/x86_64/elf/start.S:113

Possible duplicates by query: bug 249159, bug 247408, bug 245238, bug 241325, bug 241263.

Reported using DrKonqi