Application: kwin (4.9.4)
KDE Platform Version: 4.9.4
Qt Version: 4.8.3
Operating System: Linux 3.5.0-22-generic i686
Distribution: Ubuntu 12.10

-- Information about the crash:
Pressing Shutdown button opens a dialog box notifying of system getting shutdown in 30 seconds.
If I just wait for several seconds waiting for automatick shutdown, or immediately press OK/Cancel buttons, KWin crash is reported.  The system however remains responsive even without KWin restarted. KWin can be restarted by pressing Restart Application button without problems.

-- Backtrace:
Application: KWin (kwin), signal: Segmentation fault
Using host libthread_db library "/lib/i386-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0xb1cb2980 (LWP 2184))]

Thread 2 (Thread 0xab691b40 (LWP 2191)):
#0  0xb76fd424 in __kernel_vsyscall ()
#1  0xb2c5e96b in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/i386-linux-gnu/libpthread.so.0
#2  0xb74ea64c in pthread_cond_wait () from /lib/i386-linux-gnu/libc.so.6
#3  0xb66421cd in ?? () from /usr/lib/i386-linux-gnu/libQtScript.so.4
#4  0xb66421ff in ?? () from /usr/lib/i386-linux-gnu/libQtScript.so.4
#5  0xb2c5ad4c in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#6  0xb74dcd3e in clone () from /lib/i386-linux-gnu/libc.so.6

Thread 1 (Thread 0xb1cb2980 (LWP 2184)):
[KCrash Handler]
#7  PUSH_RESRC (tor=<optimized out>, data=<optimized out>, r=<optimized out>, bin=<optimized out>, mthd=<optimized out>, push=<optimized out>, subc=<optimized out>, access=<optimized out>, vor=<optimized out>) at nv30_winsys.h:107
#8  nv30_vbo_validate (nv30=0x8bfaa78) at nv30_vbo.c:239
#9  0xad5e1802 in nv30_state_validate (nv30=nv30@entry=0x8bfaa78, hwtnl=hwtnl@entry=1 '\001') at nv30_state_validate.c:487
#10 0xad5bf4d5 in nv30_clear (pipe=0x8bfaa78, buffers=1, color=0xbfb2e39c, depth=1, stencil=0) at nv30_clear.c:61
#11 0xad7fe3b0 in st_Clear (ctx=0x8c3b288, mask=2) at ../../../../src/mesa/state_tracker/st_cb_clear.c:548
#12 0xad7bad27 in _mesa_Clear (mask=16384) at ../../../../src/mesa/main/clear.c:233
#13 0xb7670f55 in KWin::SceneOpenGL::paintBackground (this=this@entry=0x8b2d0a8, region=...) at ../../kwin/scene_opengl.cpp:186
#14 0xb765b742 in KWin::Scene::paintGenericScreen (this=0x8b2d0a8, orig_mask=32) at ../../kwin/scene.cpp:200
#15 0xb766a115 in KWin::SceneOpenGL::paintGenericScreen (this=0x8b2d0a8, mask=32, data=...) at ../../kwin/scene_opengl.cpp:173
#16 0xb765a144 in KWin::Scene::finalPaintScreen (this=0x8b2d0a8, mask=32, region=..., data=...) at ../../kwin/scene.cpp:190
#17 0xb767e208 in KWin::EffectsHandlerImpl::paintScreen (this=0x8d52198, mask=32, region=..., data=...) at ../../kwin/effects.cpp:246
#18 0xadf19039 in KWin::LogoutEffect::paintScreen (this=0x8ef43b0, mask=32, region=..., data=...) at ../../../kwin/effects/logout/logout.cpp:193
#19 0xb767e1ab in KWin::EffectsHandlerImpl::paintScreen (this=0x8d52198, mask=mask@entry=32, region=..., data=...) at ../../kwin/effects.cpp:243
#20 0xb68f79ea in KWin::Effect::paintScreen (this=0x8dd68d0, mask=32, region=..., data=...) at ../../../kwin/libkwineffects/kwineffects.cpp:142
#21 0xb767e1ab in KWin::EffectsHandlerImpl::paintScreen (this=0x8d52198, mask=32, region=..., data=...) at ../../kwin/effects.cpp:243
#22 0xb765b9b5 in KWin::Scene::paintScreen (this=0x8b2d0a8, mask=0xbfb2eaac, region=0xbfb2eb18) at ../../kwin/scene.cpp:146
#23 0xb7672e79 in KWin::SceneOpenGL::paint (this=0x8b2d0a8, damage=..., toplevels=...) at ../../kwin/scene_opengl_glx.cpp:499
#24 0xb76546c6 in KWin::Workspace::performCompositing (this=0x8ab39c0) at ../../kwin/composite.cpp:443
#25 0xb5fa0d34 in QObject::event (this=0x8ab39c0, e=0xbfb2f010) at kernel/qobject.cpp:1157
#26 0xb547b39c in QApplicationPrivate::notify_helper (this=0x89b1fc8, receiver=0x8ab39c0, e=0xbfb2f010) at kernel/qapplication.cpp:4562
#27 0xb547fdaf in QApplication::notify (this=0xbfb2f010, receiver=0x8ab39c0, e=0xbfb2f010) at kernel/qapplication.cpp:3944
#28 0xb7199e91 in KApplication::notify (this=0xbfb2f3d8, receiver=0x8ab39c0, event=0xbfb2f010) at ../../kdeui/kernel/kapplication.cpp:311
#29 0xb760088f in notify (e=0xbfb2f010, o=0x8ab39c0, this=0xbfb2f3d8) at ../../kwin/main.cpp:371
#30 KWin::Application::notify (this=0xbfb2f3d8, o=0x8ab39c0, e=0xbfb2f010) at ../../kwin/main.cpp:367
#31 0xb5f8a78e in QCoreApplication::notifyInternal (this=0xbfb2f3d8, receiver=0x8ab39c0, event=0xbfb2f010) at kernel/qcoreapplication.cpp:915
#32 0xb5fbf280 in sendEvent (event=0xbfb2f010, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#33 QTimerInfoList::activateTimers (this=0x89b286c) at kernel/qeventdispatcher_unix.cpp:611
#34 0xb5fbf305 in QEventDispatcherUNIX::activateTimers (this=0x89b286c, this@entry=0x8971eb8) at kernel/qeventdispatcher_unix.cpp:868
#35 0xb5fbf478 in QEventDispatcherUNIX::processEvents (this=0x8971eb8, flags=...) at kernel/qeventdispatcher_unix.cpp:930
#36 0xb55329f3 in QEventDispatcherX11::processEvents (this=0x8971eb8, flags=...) at kernel/qeventdispatcher_x11.cpp:152
#37 0xb5f8926c in QEventLoop::processEvents (this=this@entry=0xbfb2f258, flags=...) at kernel/qeventloop.cpp:149
#38 0xb5f89561 in QEventLoop::exec (this=0xbfb2f258, flags=...) at kernel/qeventloop.cpp:204
#39 0xb5f8ecba in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1187
#40 0xb5478fc4 in QApplication::exec () at kernel/qapplication.cpp:3823
#41 0xb76031f9 in kdemain (argc=3, argv=0xbfb2f4c4) at ../../kwin/main.cpp:545
#42 0x0804855b in main (argc=3, argv=0xbfb2f4c4) at kwin_dummy.cpp:3

Possible duplicates by query: bug 313388, bug 312219, bug 311036, bug 309701, bug 309280.

Reported using DrKonqi