Application: kwin (4.3.80 (KDE 4.3.80 (KDE 4.4 Beta1)))
KDE Platform Version: 4.3.80 (KDE 4.3.80 (KDE 4.4 Beta1))
Qt Version: 4.6.0
Operating System: Linux 2.6.31-17-generic-pae i686
Distribution: Ubuntu 9.10

-- Information about the crash:
Sorry, but there were a number of things going on at the time of the crash. Not really sure what caused it. Hope the trace may reveal something useful.

 -- Backtrace:
Application: KWin (kwin), signal: Segmentation fault
[KCrash Handler]
#6  0xb786448a in KWin::Scene::Window::buildQuads (this=0x8adbad8, force=false) at ../../kwin/scene.cpp:485
#7  0xb78655ce in KWin::Scene::paintSimpleScreen (this=0x89af5d0, orig_mask=0, region=...) at ../../kwin/scene.cpp:237
#8  0xb7862df9 in KWin::Scene::finalPaintScreen (this=0x89af5d0, mask=0, region=..., data=...) at ../../kwin/scene.cpp:176
#9  0xb787c65c in KWin::EffectsHandlerImpl::paintScreen (this=0x89a0080, mask=0, region=..., data=...) at ../../kwin/effects.cpp:126
#10 0xb05a4e47 in KWin::LogoutEffect::paintScreen (this=0x8af08e0, mask=0, region=..., data=...) at ../../../kwin/effects/logout/logout.cpp:196
#11 0xb787c6e0 in KWin::EffectsHandlerImpl::paintScreen (this=0x89a0080, mask=0, region=..., data=...) at ../../kwin/effects.cpp:122
#12 0xb05c543f in KWin::ShadowEffect::paintScreen (this=0x89d4100, mask=<value optimized out>, region=..., data=...) at ../../../kwin/effects/shadow/shadow.cpp:182
#13 0xb787c6e0 in KWin::EffectsHandlerImpl::paintScreen (this=0x89a0080, mask=0, region=..., data=...) at ../../kwin/effects.cpp:122
#14 0xb05ab6ff in KWin::PresentWindowsEffect::paintScreen (this=0x8949180, mask=0, region=..., data=...) at ../../../kwin/effects/presentwindows/presentwindows.cpp:191
#15 0xb787c6e0 in KWin::EffectsHandlerImpl::paintScreen (this=0x89a0080, mask=0, region=..., data=...) at ../../kwin/effects.cpp:122
#16 0xb6f9fd96 in KWin::Effect::paintScreen (this=0x893d6d8, mask=0, region=..., data=...) at ../../../kwin/lib/kwineffects.cpp:227
#17 0xb787c6e0 in KWin::EffectsHandlerImpl::paintScreen (this=0x89a0080, mask=0, region=..., data=...) at ../../kwin/effects.cpp:122
#18 0xb6f9fd96 in KWin::Effect::paintScreen (this=0x88e05d0, mask=0, region=..., data=...) at ../../../kwin/lib/kwineffects.cpp:227
#19 0xb787c6e0 in KWin::EffectsHandlerImpl::paintScreen (this=0x89a0080, mask=0, region=..., data=...) at ../../kwin/effects.cpp:122
#20 0xb6f9fd96 in KWin::Effect::paintScreen (this=0x8afb900, mask=0, region=..., data=...) at ../../../kwin/lib/kwineffects.cpp:227
#21 0xb787c6e0 in KWin::EffectsHandlerImpl::paintScreen (this=0x89a0080, mask=0, region=..., data=...) at ../../kwin/effects.cpp:122
#22 0xb6f9fd96 in KWin::Effect::paintScreen (this=0x89756c0, mask=0, region=..., data=...) at ../../../kwin/lib/kwineffects.cpp:227
#23 0xb787c6e0 in KWin::EffectsHandlerImpl::paintScreen (this=0x89a0080, mask=0, region=..., data=...) at ../../kwin/effects.cpp:122
#24 0xb6f9fd96 in KWin::Effect::paintScreen (this=0x89c83d0, mask=0, region=..., data=...) at ../../../kwin/lib/kwineffects.cpp:227
#25 0xb787c6e0 in KWin::EffectsHandlerImpl::paintScreen (this=0x89a0080, mask=0, region=..., data=...) at ../../kwin/effects.cpp:122
#26 0xb6f9fd96 in KWin::Effect::paintScreen (this=0x89927e0, mask=0, region=..., data=...) at ../../../kwin/lib/kwineffects.cpp:227
#27 0xb787c6e0 in KWin::EffectsHandlerImpl::paintScreen (this=0x89a0080, mask=0, region=..., data=...) at ../../kwin/effects.cpp:122
#28 0xb05904a3 in KWin::DesktopGridEffect::paintScreen (this=0x8951000, mask=0, region=..., data=...) at ../../../kwin/effects/desktopgrid/desktopgrid.cpp:151
#29 0xb787c6e0 in KWin::EffectsHandlerImpl::paintScreen (this=0x89a0080, mask=0, region=..., data=...) at ../../kwin/effects.cpp:122
#30 0xb6f9fd96 in KWin::Effect::paintScreen (this=0x8942780, mask=0, region=..., data=...) at ../../../kwin/lib/kwineffects.cpp:227
#31 0xb787c6e0 in KWin::EffectsHandlerImpl::paintScreen (this=0x89a0080, mask=0, region=..., data=...) at ../../kwin/effects.cpp:122
#32 0xb6f9fd96 in KWin::Effect::paintScreen (this=0x8986278, mask=0, region=..., data=...) at ../../../kwin/lib/kwineffects.cpp:227
#33 0xb787c6e0 in KWin::EffectsHandlerImpl::paintScreen (this=0x89a0080, mask=0, region=..., data=...) at ../../kwin/effects.cpp:122
#34 0xb6f9fd96 in KWin::Effect::paintScreen (this=0x8ae0bc0, mask=0, region=..., data=...) at ../../../kwin/lib/kwineffects.cpp:227
#35 0xb787c6e0 in KWin::EffectsHandlerImpl::paintScreen (this=0x89a0080, mask=0, region=..., data=...) at ../../kwin/effects.cpp:122
#36 0xb6f9fd96 in KWin::Effect::paintScreen (this=0x8afba70, mask=0, region=..., data=...) at ../../../kwin/lib/kwineffects.cpp:227
#37 0xb787c6e0 in KWin::EffectsHandlerImpl::paintScreen (this=0x89a0080, mask=0, region=..., data=...) at ../../kwin/effects.cpp:122
#38 0xb05d7dfc in KWin::CoverSwitchEffect::paintScreen (this=0x8aec490, mask=0, region=..., data=...) at ../../../kwin/effects/coverswitch/coverswitch.cpp:124
#39 0xb787c6e0 in KWin::EffectsHandlerImpl::paintScreen (this=0x89a0080, mask=0, region=..., data=...) at ../../kwin/effects.cpp:122
#40 0xb6f9fd96 in KWin::Effect::paintScreen (this=0x894a840, mask=0, region=..., data=...) at ../../../kwin/lib/kwineffects.cpp:227
#41 0xb787c6e0 in KWin::EffectsHandlerImpl::paintScreen (this=0x89a0080, mask=0, region=..., data=...) at ../../kwin/effects.cpp:122
#42 0xb6f9fd96 in KWin::Effect::paintScreen (this=0x8ae1fa0, mask=0, region=..., data=...) at ../../../kwin/lib/kwineffects.cpp:227
#43 0xb787c6e0 in KWin::EffectsHandlerImpl::paintScreen (this=0x89a0080, mask=0, region=..., data=...) at ../../kwin/effects.cpp:122
#44 0xb78650e4 in KWin::Scene::paintScreen (this=0x89af5d0, mask=0xbfc04578, region=0xbfc04644) at ../../kwin/scene.cpp:134
#45 0xb7874e9a in KWin::SceneOpenGL::paint (this=0x89af5d0, damage=..., toplevels=...) at ../../kwin/scene_opengl.cpp:747
#46 0xb785f224 in KWin::Workspace::performCompositing (this=0x8966d98) at ../../kwin/composite.cpp:424
#47 0xb77db736 in KWin::Workspace::qt_metacall (this=0x8966d98, _c=QMetaObject::InvokeMetaMethod, _id=173, _a=0xbfc0476c) at ./workspace.moc:535
#48 0xb5ed411a in QMetaObject::metacall (object=0x8966d98, cl=QMetaObject::InvokeMetaMethod, idx=173, argv=0xbfc0476c) at kernel/qmetaobject.cpp:237
#49 0xb5ee289b in QMetaObject::activate (sender=0x8967020, m=0xb5fe35a4, local_signal_index=0, argv=0x0) at kernel/qobject.cpp:3294
#50 0xb5f341c7 in QTimer::timeout (this=0x8967020) at .moc/release-shared/moc_qtimer.cpp:134
#51 0xb5eeab4e in QTimer::timerEvent (this=0x8967020, e=0xbfc04c50) at kernel/qtimer.cpp:271
#52 0xb5edf704 in QObject::event (this=0x8967020, e=0xbfc0329c) at kernel/qobject.cpp:1224
#53 0xb619519c in QApplicationPrivate::notify_helper (this=0x8872ab8, receiver=0x8967020, e=0xbfc04c50) at kernel/qapplication.cpp:4242
#54 0xb619bdf7 in QApplication::notify (this=0xbfc04fc8, receiver=0x8967020, e=0xbfc04c50) at kernel/qapplication.cpp:3661
#55 0xb7497f8a in KApplication::notify (this=0xbfc04fc8, receiver=0x8967020, event=0xbfc04c50) at ../../kdeui/kernel/kapplication.cpp:302
#56 0xb77f51ff in KWin::Application::notify (this=0xbfc04fc8, o=0x8967020, e=0xbfc04c50) at ../../kwin/main.cpp:370
#57 0xb5eceeab in QCoreApplication::notifyInternal (this=0xbfc04fc8, receiver=0x8967020, event=0xbfc04c50) at kernel/qcoreapplication.cpp:704
#58 0xb5efe286 in QCoreApplication::sendEvent (this=0x8875d34) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#59 QTimerInfoList::activateTimers (this=0x8875d34) at kernel/qeventdispatcher_unix.cpp:603
#60 0xb5efaf17 in timerSourceDispatch (source=0x8875d70) at kernel/qeventdispatcher_glib.cpp:184
#61 idleTimerSourceDispatch (source=0x8875d70) at kernel/qeventdispatcher_glib.cpp:231
#62 0xb2e09e88 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#63 0xb2e0d730 in ?? () from /lib/libglib-2.0.so.0
#64 0xb2e0d863 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#65 0xb5efabd5 in QEventDispatcherGlib::processEvents (this=0x8872a98, flags=...) at kernel/qeventdispatcher_glib.cpp:407
#66 0xb6252b75 in QGuiEventDispatcherGlib::processEvents (this=0x8872a98, flags=...) at kernel/qguieventdispatcher_glib.cpp:202
#67 0xb5ecd4c9 in QEventLoop::processEvents (this=0xbfc04f14, flags=) at kernel/qeventloop.cpp:149
#68 0xb5ecd91a in QEventLoop::exec (this=0xbfc04f14, flags=...) at kernel/qeventloop.cpp:201
#69 0xb5ed1b0f in QCoreApplication::exec () at kernel/qcoreapplication.cpp:981
#70 0xb6195237 in QApplication::exec () at kernel/qapplication.cpp:3570
#71 0xb77f6e10 in kdemain (argc=3, argv=0xbfc051d4) at ../../kwin/main.cpp:526
#72 0x080485cb in main (argc=3, argv=0xbfc051d4) at kwin_dummy.cpp:3

Possible duplicates by query: bug 220038, bug 219607, bug 219364, bug 219255, bug 219071.

Reported using DrKonqi