Application: kwin (4.6.2 (4.6.2) "release 3")
KDE Platform Version: 4.6.2 (4.6.2) "release 3"
Qt Version: 4.7.2
Operating System: Linux 2.6.37.1-1.2-desktop x86_64
Distribution: "openSUSE 11.4 (x86_64)"

-- Information about the crash:
- What I was doing when the application crashed:
Simply nothing.   This happens when I walk away from my PC for a few hours, system goes idle, I login and error reported.   I closed all windows prior to leaving PC.  This happens regularly since upgrading to 11.4.

-- Backtrace:
Application: KWin (kwin), signal: Segmentation fault
[Current thread is 1 (Thread 0x7f28387c4760 (LWP 2831))]

Thread 2 (Thread 0x7f281b001700 (LWP 2897)):
#0  0x00007f283409b38c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f2836e99004 in QTWTF::TCMalloc_PageHeap::scavengerThread (this=0x7f28371b2180) at ../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:2359
#2  0x00007f2836e99039 in QTWTF::TCMalloc_PageHeap::runScavengerThread (context=0x7f28371c0254) at ../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:1464
#3  0x00007f2834096a3f in start_thread () from /lib64/libpthread.so.0
#4  0x00007f283802b67d in clone () from /lib64/libc.so.6
#5  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f28387c4760 (LWP 2831)):
[KCrash Handler]
#6  intel_region_buffer (intel=0x7551e0, region=0x0, flag=2) at intel_regions.c:514
#7  0x00007f28203042d4 in intelClearWithBlit (ctx=0x7551e0, mask=2) at intel_blit.c:262
#8  0x00007f28203067da in intelClear (ctx=0x7551e0, mask=2) at intel_clear.c:177
#9  0x00007f2838390915 in KWin::SceneOpenGL::paintBackground (this=<value optimized out>, region=<value optimized out>) at /usr/src/debug/kdebase-workspace-4.6.2/kwin/scene_opengl.cpp:921
#10 0x00007f2838388086 in KWin::Scene::paintGenericScreen (this=0x7465c0, orig_mask=40) at /usr/src/debug/kdebase-workspace-4.6.2/kwin/scene.cpp:188
#11 0x00007f28383851da in KWin::Scene::finalPaintScreen (this=0x7465c0, mask=40, region=<value optimized out>, data=<value optimized out>) at /usr/src/debug/kdebase-workspace-4.6.2/kwin/scene.cpp:178
#12 0x00007f28383a267f in KWin::EffectsHandlerImpl::paintScreen (this=<value optimized out>, mask=40, region=<value optimized out>, data=...) at /usr/src/debug/kdebase-workspace-4.6.2/kwin/effects.cpp:173
#13 0x00007f281b7057bb in KWin::StartupFeedbackEffect::paintScreen (this=0x190d170, mask=40, region=<value optimized out>, data=...) at /usr/src/debug/kdebase-workspace-4.6.2/kwin/effects/startupfeedback/startupfeedback.cpp:166
#14 0x00007f28383a270c in KWin::EffectsHandlerImpl::paintScreen (this=0x1878a20, mask=40, region=<value optimized out>, data=...) at /usr/src/debug/kdebase-workspace-4.6.2/kwin/effects.cpp:169
#15 0x00007f2836488f7f in KWin::Effect::paintScreen (this=<value optimized out>, mask=40, region=<value optimized out>, data=...) at /usr/src/debug/kdebase-workspace-4.6.2/kwin/lib/kwineffects.cpp:227
#16 0x00007f28383a270c in KWin::EffectsHandlerImpl::paintScreen (this=0x1878a20, mask=40, region=<value optimized out>, data=...) at /usr/src/debug/kdebase-workspace-4.6.2/kwin/effects.cpp:169
#17 0x00007f281b6ac4ff in KWin::LogoutEffect::paintScreen (this=0x1eab8c0, mask=40, region=..., data=<value optimized out>) at /usr/src/debug/kdebase-workspace-4.6.2/kwin/effects/logout/logout.cpp:207
#18 0x00007f28383a270c in KWin::EffectsHandlerImpl::paintScreen (this=0x1878a20, mask=40, region=<value optimized out>, data=...) at /usr/src/debug/kdebase-workspace-4.6.2/kwin/effects.cpp:169
#19 0x00007f281b6c7132 in KWin::ShadowEffect::paintScreen (this=0x1da41d0, mask=40, region=..., data=...) at /usr/src/debug/kdebase-workspace-4.6.2/kwin/effects/shadow/shadow.cpp:189
#20 0x00007f28383a270c in KWin::EffectsHandlerImpl::paintScreen (this=0x1878a20, mask=40, region=<value optimized out>, data=...) at /usr/src/debug/kdebase-workspace-4.6.2/kwin/effects.cpp:169
#21 0x00007f281b6d9f3e in KWin::BlurEffect::paintScreen (this=<value optimized out>, mask=40, region=..., data=...) at /usr/src/debug/kdebase-workspace-4.6.2/kwin/effects/blur/blur.cpp:230
#22 0x00007f28383a270c in KWin::EffectsHandlerImpl::paintScreen (this=0x1878a20, mask=8, region=<value optimized out>, data=...) at /usr/src/debug/kdebase-workspace-4.6.2/kwin/effects.cpp:169
#23 0x00007f281b6b0f82 in KWin::PresentWindowsEffect::paintScreen (this=0x1de12f0, mask=8, region=..., data=<value optimized out>) at /usr/src/debug/kdebase-workspace-4.6.2/kwin/effects/presentwindows/presentwindows.cpp:205
#24 0x00007f28383a270c in KWin::EffectsHandlerImpl::paintScreen (this=0x1878a20, mask=8, region=<value optimized out>, data=...) at /usr/src/debug/kdebase-workspace-4.6.2/kwin/effects.cpp:169
#25 0x00007f2836488f7f in KWin::Effect::paintScreen (this=<value optimized out>, mask=8, region=<value optimized out>, data=...) at /usr/src/debug/kdebase-workspace-4.6.2/kwin/lib/kwineffects.cpp:227
#26 0x00007f28383a270c in KWin::EffectsHandlerImpl::paintScreen (this=0x1878a20, mask=8, region=<value optimized out>, data=...) at /usr/src/debug/kdebase-workspace-4.6.2/kwin/effects.cpp:169
#27 0x00007f2836488f7f in KWin::Effect::paintScreen (this=<value optimized out>, mask=8, region=<value optimized out>, data=...) at /usr/src/debug/kdebase-workspace-4.6.2/kwin/lib/kwineffects.cpp:227
#28 0x00007f28383a270c in KWin::EffectsHandlerImpl::paintScreen (this=0x1878a20, mask=8, region=<value optimized out>, data=...) at /usr/src/debug/kdebase-workspace-4.6.2/kwin/effects.cpp:169
#29 0x00007f2836488f7f in KWin::Effect::paintScreen (this=<value optimized out>, mask=8, region=<value optimized out>, data=...) at /usr/src/debug/kdebase-workspace-4.6.2/kwin/lib/kwineffects.cpp:227
#30 0x00007f28383a270c in KWin::EffectsHandlerImpl::paintScreen (this=0x1878a20, mask=8, region=<value optimized out>, data=...) at /usr/src/debug/kdebase-workspace-4.6.2/kwin/effects.cpp:169
#31 0x00007f2836488f7f in KWin::Effect::paintScreen (this=<value optimized out>, mask=8, region=<value optimized out>, data=...) at /usr/src/debug/kdebase-workspace-4.6.2/kwin/lib/kwineffects.cpp:227
#32 0x00007f28383a270c in KWin::EffectsHandlerImpl::paintScreen (this=0x1878a20, mask=8, region=<value optimized out>, data=...) at /usr/src/debug/kdebase-workspace-4.6.2/kwin/effects.cpp:169
#33 0x00007f281b6976a3 in KWin::DesktopGridEffect::paintScreen (this=0x1e79000, mask=8, region=..., data=...) at /usr/src/debug/kdebase-workspace-4.6.2/kwin/effects/desktopgrid/desktopgrid.cpp:155
#34 0x00007f28383a270c in KWin::EffectsHandlerImpl::paintScreen (this=0x1878a20, mask=8, region=<value optimized out>, data=...) at /usr/src/debug/kdebase-workspace-4.6.2/kwin/effects.cpp:169
#35 0x00007f281b6cd90d in KWin::SlideEffect::paintScreen (this=<value optimized out>, mask=8, region=..., data=...) at /usr/src/debug/kdebase-workspace-4.6.2/kwin/effects/slide/slide.cpp:86
#36 0x00007f28383a270c in KWin::EffectsHandlerImpl::paintScreen (this=0x1878a20, mask=8, region=<value optimized out>, data=...) at /usr/src/debug/kdebase-workspace-4.6.2/kwin/effects.cpp:169
#37 0x00007f281b690ee2 in KWin::BoxSwitchEffect::paintScreen (this=0x1dd7a60, mask=8, region=..., data=<value optimized out>) at /usr/src/debug/kdebase-workspace-4.6.2/kwin/effects/boxswitch/boxswitch.cpp:143
#38 0x00007f28383a270c in KWin::EffectsHandlerImpl::paintScreen (this=0x1878a20, mask=8, region=<value optimized out>, data=...) at /usr/src/debug/kdebase-workspace-4.6.2/kwin/effects.cpp:169
#39 0x00007f2836488f7f in KWin::Effect::paintScreen (this=<value optimized out>, mask=8, region=<value optimized out>, data=...) at /usr/src/debug/kdebase-workspace-4.6.2/kwin/lib/kwineffects.cpp:227
#40 0x00007f28383a270c in KWin::EffectsHandlerImpl::paintScreen (this=0x1878a20, mask=8, region=<value optimized out>, data=...) at /usr/src/debug/kdebase-workspace-4.6.2/kwin/effects.cpp:169
#41 0x00007f2836488f7f in KWin::Effect::paintScreen (this=<value optimized out>, mask=8, region=<value optimized out>, data=...) at /usr/src/debug/kdebase-workspace-4.6.2/kwin/lib/kwineffects.cpp:227
#42 0x00007f28383a270c in KWin::EffectsHandlerImpl::paintScreen (this=0x1878a20, mask=8, region=<value optimized out>, data=...) at /usr/src/debug/kdebase-workspace-4.6.2/kwin/effects.cpp:169
#43 0x00007f2836488f7f in KWin::Effect::paintScreen (this=<value optimized out>, mask=8, region=<value optimized out>, data=...) at /usr/src/debug/kdebase-workspace-4.6.2/kwin/lib/kwineffects.cpp:227
#44 0x00007f28383a270c in KWin::EffectsHandlerImpl::paintScreen (this=0x1878a20, mask=8, region=<value optimized out>, data=...) at /usr/src/debug/kdebase-workspace-4.6.2/kwin/effects.cpp:169
#45 0x00007f2836488f7f in KWin::Effect::paintScreen (this=<value optimized out>, mask=8, region=<value optimized out>, data=...) at /usr/src/debug/kdebase-workspace-4.6.2/kwin/lib/kwineffects.cpp:227
#46 0x00007f28383a270c in KWin::EffectsHandlerImpl::paintScreen (this=0x1878a20, mask=8, region=<value optimized out>, data=...) at /usr/src/debug/kdebase-workspace-4.6.2/kwin/effects.cpp:169
#47 0x00007f281b6d75bf in KWin::ZoomEffect::paintScreen (this=0x1e8afb0, mask=8, region=..., data=...) at /usr/src/debug/kdebase-workspace-4.6.2/kwin/effects/zoom/zoom.cpp:341
#48 0x00007f28383a270c in KWin::EffectsHandlerImpl::paintScreen (this=0x1878a20, mask=8, region=<value optimized out>, data=...) at /usr/src/debug/kdebase-workspace-4.6.2/kwin/effects.cpp:169
#49 0x00007f2838386295 in KWin::Scene::paintScreen (this=0x7465c0, mask=0x7fffd90919fc, region=0x7fffd9091af0) at /usr/src/debug/kdebase-workspace-4.6.2/kwin/scene.cpp:137
#50 0x00007f283839a7d9 in KWin::SceneOpenGL::paint (this=0x7465c0, damage=..., toplevels=<value optimized out>) at /usr/src/debug/kdebase-workspace-4.6.2/kwin/scene_opengl.cpp:772
#51 0x00007f28383829b7 in KWin::Workspace::performCompositing (this=0x7f281c354150) at /usr/src/debug/kdebase-workspace-4.6.2/kwin/composite.cpp:448
#52 0x00007f28344240a9 in QObject::event (this=0x7f281c354150, e=<value optimized out>) at kernel/qobject.cpp:1181
#53 0x00007f28335bb144 in QApplicationPrivate::notify_helper (this=0x63c100, receiver=0x7f281c354150, e=0x7fffd9092330) at kernel/qapplication.cpp:4462
#54 0x00007f28335c36fa in QApplication::notify (this=<value optimized out>, receiver=0x7f281c354150, e=0x7fffd9092330) at kernel/qapplication.cpp:4341
#55 0x00007f2837aa3d46 in KApplication::notify (this=0x7fffd9092810, receiver=0x7f281c354150, event=0x7fffd9092330) at /usr/src/debug/kdelibs-4.6.2/kdeui/kernel/kapplication.cpp:311
#56 0x00007f283441047c in QCoreApplication::notifyInternal (this=0x7fffd9092810, receiver=0x7f281c354150, event=0x7fffd9092330) at kernel/qcoreapplication.cpp:731
#57 0x00007f283443ddf8 in sendEvent (this=0x63db30) at kernel/qcoreapplication.h:215
#58 QTimerInfoList::activateTimers (this=0x63db30) at kernel/qeventdispatcher_unix.cpp:619
#59 0x00007f283443e500 in QEventDispatcherUNIX::processEvents (this=0x612660, flags=...) at kernel/qeventdispatcher_unix.cpp:938
#60 0x00007f28336619cc in QEventDispatcherX11::processEvents (this=0x612660, flags=...) at kernel/qeventdispatcher_x11.cpp:152
#61 0x00007f283440f8d2 in QEventLoop::processEvents (this=<value optimized out>, flags=...) at kernel/qeventloop.cpp:149
#62 0x00007f283440fae5 in QEventLoop::exec (this=0x7fffd9092700, flags=...) at kernel/qeventloop.cpp:201
#63 0x00007f2834413f2b in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1008
#64 0x00007f2838320e7a in kdemain (argc=<value optimized out>, argv=0x7fffd9092870) at /usr/src/debug/kdebase-workspace-4.6.2/kwin/main.cpp:542
#65 0x00007f2837f76bfd in __libc_start_main () from /lib64/libc.so.6
#66 0x0000000000400699 in _start () at ../sysdeps/x86_64/elf/start.S:113

Possible duplicates by query: bug 272106, bug 272102, bug 272069, bug 272021, bug 272011.

Reported using DrKonqi