Application: kwin (4.6.2 (4.6.2))
KDE Platform Version: 4.6.2 (4.6.2)
Qt Version: 4.7.2
Operating System: Linux 2.6.38-11-generic x86_64
Distribution: Ubuntu 11.04

-- Information about the crash:
- What I was doing when the application crashed: Left my computer running today.  When I got home, reactivated screen and KWin crash pop up window appeared.  This has happened at least 3-4 times in the last week.

-- Backtrace:
Application: KWin (kwin), signal: Segmentation fault
[Current thread is 1 (Thread 0x7f58235687a0 (LWP 2027))]

Thread 3 (Thread 0x7f5806d16700 (LWP 2051)):
#0  0x00007f5822db3143 in select () at ../sysdeps/unix/syscall-template.S:82
#1  0x00007f581f19132c in qt_safe_select (nfds=17, fdread=0x4503060, fdwrite=0x45032f8, fdexcept=0x4503590, orig_timeout=<value optimized out>) at kernel/qcore_unix.cpp:82
#2  0x00007f581f1963d0 in QEventDispatcherUNIXPrivate::doSelect (this=0x4502ea0, flags=..., timeout=0x0) at kernel/qeventdispatcher_unix.cpp:219
#3  0x00007f581f19704a in QEventDispatcherUNIX::processEvents (this=0x45029d0, flags=...) at kernel/qeventdispatcher_unix.cpp:919
#4  0x00007f581f168882 in QEventLoop::processEvents (this=<value optimized out>, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007f581f168abc in QEventLoop::exec (this=0x7f5806d15db0, flags=...) at kernel/qeventloop.cpp:201
#6  0x00007f581f07f924 in QThread::exec (this=<value optimized out>) at thread/qthread.cpp:492
#7  0x00007f581f14ac2f in QInotifyFileSystemWatcherEngine::run (this=0x4501ce0) at io/qfilesystemwatcher_inotify.cpp:248
#8  0x00007f581f082175 in QThreadPrivate::start (arg=0x4501ce0) at thread/qthread_unix.cpp:320
#9  0x00007f5819771d8c in start_thread (arg=0x7f5806d16700) at pthread_create.c:304
#10 0x00007f5822dbb04d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7f5806505700 (LWP 2052)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f5821c1a2a2 in QTWTF::TCMalloc_PageHeap::scavengerThread (this=0x7f5821f33180) at ../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:2359
#2  0x00007f5821c1a2d9 in QTWTF::TCMalloc_PageHeap::runScavengerThread (context=0x7f5821f41254) at ../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:1464
#3  0x00007f5819771d8c in start_thread (arg=0x7f5806505700) at pthread_create.c:304
#4  0x00007f5822dbb04d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#5  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f58235687a0 (LWP 2027)):
[KCrash Handler]
#6  intel_region_buffer (intel=0x1dd2270, region=0x0, flag=2) at intel_regions.c:514
#7  0x00007f580ac596c2 in intelClearWithBlit (ctx=0x1dd2270, mask=2) at intel_blit.c:262
#8  0x00007f580ac5bd2a in intelClear (ctx=0x1dd2270, mask=2) at intel_clear.c:177
#9  0x00007f5823131ce7 in KWin::SceneOpenGL::paintBackground (this=<value optimized out>, region=<value optimized out>) at ../../kwin/scene_opengl.cpp:921
#10 0x00007f582312988f in KWin::Scene::paintGenericScreen (this=0x1d527c0, orig_mask=32) at ../../kwin/scene.cpp:188
#11 0x00007f5823126c7a in KWin::Scene::finalPaintScreen (this=0x1d527c0, mask=32, region=<value optimized out>, data=<value optimized out>) at ../../kwin/scene.cpp:178
#12 0x00007f5823144f19 in KWin::EffectsHandlerImpl::paintScreen (this=0x2ef1240, mask=32, region=<value optimized out>, data=...) at ../../kwin/effects.cpp:173
#13 0x00007f5809c735a6 in KWin::StartupFeedbackEffect::paintScreen (this=0x3340620, mask=32, region=<value optimized out>, data=...) at ../../../kwin/effects/startupfeedback/startupfeedback.cpp:166
#14 0x00007f5823144fa3 in KWin::EffectsHandlerImpl::paintScreen (this=0x2ef1240, mask=32, region=<value optimized out>, data=...) at ../../kwin/effects.cpp:169
#15 0x00007f5821204a18 in KWin::Effect::paintScreen (this=<value optimized out>, mask=32, region=<value optimized out>, data=...) at ../../../kwin/lib/kwineffects.cpp:227
#16 0x00007f5823144fa3 in KWin::EffectsHandlerImpl::paintScreen (this=0x2ef1240, mask=32, region=<value optimized out>, data=...) at ../../kwin/effects.cpp:169
#17 0x00007f5809c1a44d in KWin::LogoutEffect::paintScreen (this=0x3343860, mask=32, region=..., data=...) at ../../../kwin/effects/logout/logout.cpp:207
#18 0x00007f5823144fa3 in KWin::EffectsHandlerImpl::paintScreen (this=0x2ef1240, mask=32, region=<value optimized out>, data=...) at ../../kwin/effects.cpp:169
#19 0x00007f5809c3557b in KWin::ShadowEffect::paintScreen (this=0x31091f0, mask=32, region=..., data=...) at ../../../kwin/effects/shadow/shadow.cpp:189
#20 0x00007f5823144fa3 in KWin::EffectsHandlerImpl::paintScreen (this=0x2ef1240, mask=32, region=<value optimized out>, data=...) at ../../kwin/effects.cpp:169
#21 0x00007f5809c47e68 in KWin::BlurEffect::paintScreen (this=<value optimized out>, mask=32, region=..., data=...) at ../../../kwin/effects/blur/blur.cpp:230
#22 0x00007f5823144fa3 in KWin::EffectsHandlerImpl::paintScreen (this=0x2ef1240, mask=0, region=<value optimized out>, data=...) at ../../kwin/effects.cpp:169
#23 0x00007f5809c1efbd in KWin::PresentWindowsEffect::paintScreen (this=0x333bd80, mask=0, region=..., data=...) at ../../../kwin/effects/presentwindows/presentwindows.cpp:205
#24 0x00007f5823144fa3 in KWin::EffectsHandlerImpl::paintScreen (this=0x2ef1240, mask=0, region=<value optimized out>, data=...) at ../../kwin/effects.cpp:169
#25 0x00007f5821204a18 in KWin::Effect::paintScreen (this=<value optimized out>, mask=0, region=<value optimized out>, data=...) at ../../../kwin/lib/kwineffects.cpp:227
#26 0x00007f5823144fa3 in KWin::EffectsHandlerImpl::paintScreen (this=0x2ef1240, mask=0, region=<value optimized out>, data=...) at ../../kwin/effects.cpp:169
#27 0x00007f5821204a18 in KWin::Effect::paintScreen (this=<value optimized out>, mask=0, region=<value optimized out>, data=...) at ../../../kwin/lib/kwineffects.cpp:227
#28 0x00007f5823144fa3 in KWin::EffectsHandlerImpl::paintScreen (this=0x2ef1240, mask=0, region=<value optimized out>, data=...) at ../../kwin/effects.cpp:169
#29 0x00007f5821204a18 in KWin::Effect::paintScreen (this=<value optimized out>, mask=0, region=<value optimized out>, data=...) at ../../../kwin/lib/kwineffects.cpp:227
#30 0x00007f5823144fa3 in KWin::EffectsHandlerImpl::paintScreen (this=0x2ef1240, mask=0, region=<value optimized out>, data=...) at ../../kwin/effects.cpp:169
#31 0x00007f5821204a18 in KWin::Effect::paintScreen (this=<value optimized out>, mask=0, region=<value optimized out>, data=...) at ../../../kwin/lib/kwineffects.cpp:227
#32 0x00007f5823144fa3 in KWin::EffectsHandlerImpl::paintScreen (this=0x2ef1240, mask=0, region=<value optimized out>, data=...) at ../../kwin/effects.cpp:169
#33 0x00007f5809c65c05 in KWin::FlipSwitchEffect::paintScreen (this=0x2f6f260, mask=0, region=..., data=...) at ../../../kwin/effects/flipswitch/flipswitch.cpp:148
#34 0x00007f5823144fa3 in KWin::EffectsHandlerImpl::paintScreen (this=0x2ef1240, mask=0, region=<value optimized out>, data=...) at ../../kwin/effects.cpp:169
#35 0x00007f5809c06365 in KWin::DesktopGridEffect::paintScreen (this=0x30748c0, mask=0, region=..., data=...) at ../../../kwin/effects/desktopgrid/desktopgrid.cpp:155
#36 0x00007f5823144fa3 in KWin::EffectsHandlerImpl::paintScreen (this=0x2ef1240, mask=0, region=<value optimized out>, data=...) at ../../kwin/effects.cpp:169
#37 0x00007f5809bffbad in KWin::BoxSwitchEffect::paintScreen (this=0x330e4b0, mask=0, region=..., data=...) at ../../../kwin/effects/boxswitch/boxswitch.cpp:143
#38 0x00007f5823144fa3 in KWin::EffectsHandlerImpl::paintScreen (this=0x2ef1240, mask=0, region=<value optimized out>, data=...) at ../../kwin/effects.cpp:169
#39 0x00007f5809c56256 in KWin::CubeEffect::paintScreen (this=<value optimized out>, mask=0, region=..., data=...) at ../../../kwin/effects/cube/cube.cpp:698
#40 0x00007f5823144fa3 in KWin::EffectsHandlerImpl::paintScreen (this=0x2ef1240, mask=0, region=<value optimized out>, data=...) at ../../kwin/effects.cpp:169
#41 0x00007f5821204a18 in KWin::Effect::paintScreen (this=<value optimized out>, mask=0, region=<value optimized out>, data=...) at ../../../kwin/lib/kwineffects.cpp:227
#42 0x00007f5823144fa3 in KWin::EffectsHandlerImpl::paintScreen (this=0x2ef1240, mask=0, region=<value optimized out>, data=...) at ../../kwin/effects.cpp:169
#43 0x00007f5809c5ffa4 in KWin::CubeSlideEffect::paintScreen (this=<value optimized out>, mask=0, region=..., data=...) at ../../../kwin/effects/cube/cubeslide.cpp:111
#44 0x00007f5823144fa3 in KWin::EffectsHandlerImpl::paintScreen (this=0x2ef1240, mask=0, region=<value optimized out>, data=...) at ../../kwin/effects.cpp:169
#45 0x00007f5821204a18 in KWin::Effect::paintScreen (this=<value optimized out>, mask=0, region=<value optimized out>, data=...) at ../../../kwin/lib/kwineffects.cpp:227
#46 0x00007f5823144fa3 in KWin::EffectsHandlerImpl::paintScreen (this=0x2ef1240, mask=0, region=<value optimized out>, data=...) at ../../kwin/effects.cpp:169
#47 0x00007f5821204a18 in KWin::Effect::paintScreen (this=<value optimized out>, mask=0, region=<value optimized out>, data=...) at ../../../kwin/lib/kwineffects.cpp:227
#48 0x00007f5823144fa3 in KWin::EffectsHandlerImpl::paintScreen (this=0x2ef1240, mask=0, region=<value optimized out>, data=...) at ../../kwin/effects.cpp:169
#49 0x00007f5809c4ed86 in KWin::CoverSwitchEffect::paintScreen (this=0x2fed5e0, mask=0, region=..., data=...) at ../../../kwin/effects/coverswitch/coverswitch.cpp:126
#50 0x00007f5823144fa3 in KWin::EffectsHandlerImpl::paintScreen (this=0x2ef1240, mask=0, region=<value optimized out>, data=...) at ../../kwin/effects.cpp:169
#51 0x00007f5821204a18 in KWin::Effect::paintScreen (this=<value optimized out>, mask=0, region=<value optimized out>, data=...) at ../../../kwin/lib/kwineffects.cpp:227
#52 0x00007f5823144fa3 in KWin::EffectsHandlerImpl::paintScreen (this=0x2ef1240, mask=0, region=<value optimized out>, data=...) at ../../kwin/effects.cpp:169
#53 0x00007f5821204a18 in KWin::Effect::paintScreen (this=<value optimized out>, mask=0, region=<value optimized out>, data=...) at ../../../kwin/lib/kwineffects.cpp:227
#54 0x00007f5823144fa3 in KWin::EffectsHandlerImpl::paintScreen (this=0x2ef1240, mask=0, region=<value optimized out>, data=...) at ../../kwin/effects.cpp:169
#55 0x00007f5821204a18 in KWin::Effect::paintScreen (this=<value optimized out>, mask=0, region=<value optimized out>, data=...) at ../../../kwin/lib/kwineffects.cpp:227
#56 0x00007f5823144fa3 in KWin::EffectsHandlerImpl::paintScreen (this=0x2ef1240, mask=0, region=<value optimized out>, data=...) at ../../kwin/effects.cpp:169
#57 0x00007f5809c4539b in KWin::ZoomEffect::paintScreen (this=0x30698a0, mask=0, region=..., data=...) at ../../../kwin/effects/zoom/zoom.cpp:341
#58 0x00007f5823144fa3 in KWin::EffectsHandlerImpl::paintScreen (this=0x2ef1240, mask=0, region=<value optimized out>, data=...) at ../../kwin/effects.cpp:169
#59 0x00007f58231290af in KWin::Scene::paintScreen (this=0x1d527c0, mask=0x7ffffc70fbac, region=0x7ffffc70fc70) at ../../kwin/scene.cpp:137
#60 0x00007f582313cef3 in KWin::SceneOpenGL::paint (this=0x1d527c0, damage=..., toplevels=<value optimized out>) at ../../kwin/scene_opengl.cpp:772
#61 0x00007f5823124396 in KWin::Workspace::performCompositing (this=0x2070750) at ../../kwin/composite.cpp:448
#62 0x00007f581f17d1c9 in QObject::event (this=0x2070750, e=<value optimized out>) at kernel/qobject.cpp:1190
#63 0x00007f581e5269f4 in QApplicationPrivate::notify_helper (this=0x1c698d0, receiver=0x2070750, e=0x7ffffc710400) at kernel/qapplication.cpp:4462
#64 0x00007f581e52b3ba in QApplication::notify (this=<value optimized out>, receiver=0x2070750, e=0x7ffffc710400) at kernel/qapplication.cpp:4341
#65 0x00007f58228b6866 in KApplication::notify (this=0x7ffffc710800, receiver=0x2070750, event=0x7ffffc710400) at ../../kdeui/kernel/kapplication.cpp:311
#66 0x00007f581f16949c in QCoreApplication::notifyInternal (this=0x7ffffc710800, receiver=0x2070750, event=0x7ffffc710400) at kernel/qcoreapplication.cpp:731
#67 0x00007f581f196f12 in sendEvent (this=0x1c6b6b0) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#68 QTimerInfoList::activateTimers (this=0x1c6b6b0) at kernel/qeventdispatcher_unix.cpp:604
#69 0x00007f581f19705b in QEventDispatcherUNIX::processEvents (this=0x1c0e340, flags=...) at kernel/qeventdispatcher_unix.cpp:923
#70 0x00007f581e5d12ec in QEventDispatcherX11::processEvents (this=0x1c0e340, flags=...) at kernel/qeventdispatcher_x11.cpp:152
#71 0x00007f581f168882 in QEventLoop::processEvents (this=<value optimized out>, flags=...) at kernel/qeventloop.cpp:149
#72 0x00007f581f168abc in QEventLoop::exec (this=0x7ffffc710740, flags=...) at kernel/qeventloop.cpp:201
#73 0x00007f581f16cecb in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1008
#74 0x00007f58230c21ec in kdemain (argc=<value optimized out>, argv=0x7ffffc710e98) at ../../kwin/main.cpp:542
#75 0x00007f5822cf3eff in __libc_start_main (main=0x400740 <main(int, char**)>, argc=1, ubp_av=0x7ffffc710e98, init=<value optimized out>, fini=<value optimized out>, rtld_fini=<value optimized out>, stack_end=0x7ffffc710e88) at libc-start.c:226
#76 0x0000000000400669 in _start ()

This bug may be a duplicate of or related to bug 252817.

Possible duplicates by query: bug 278496, bug 278470, bug 278310, bug 277899, bug 277880.

Reported using DrKonqi