Application: kwin (4.5.1 (KDE 4.5.1))
KDE Platform Version: 4.5.1 (KDE 4.5.1)
Qt Version: 4.7.0
Operating System: Linux 2.6.35-22-generic i686
Distribution: Ubuntu 10.10

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

Fresh install of Kubuntu 10.10, added repositories, installed synaptic package manager and baobab, then changed desktop effects. This is a dell latitude D400 ~2003. It can't handlemost of the effects. Desktop grid is very helpful to me, so I use it, and it mostly works. Had the same unpredictable crashes with ubuntu with the plasma package installed over it. Every once in a while, when I go to the desktop grid, and then choose a desktop, I get a black display for a split second, then everything comes back and the crash report dialog comes up. I finally installed a straight Kubuntu the bug packages. I had two virtual terminals open and the "screen edges" window open when it crashed. GIPM produces this sort of behavior most reliably.

- Custom settings of the application:

I have the following desktop effects enabled:

shadow
login
taskbar thumbnails
logout translucency
highlight window
dialog
desktop grid

Bugs or not, this is such a beautiful system! I LOVE IT!

The crash can be reproduced some of the time.

-- Backtrace:
Application: KWin (kwin), signal: Aborted
[Current thread is 1 (Thread 0xb7812720 (LWP 1378))]

Thread 2 (Thread 0xaf043b70 (LWP 1398)):
#0  0x00823e36 in clock_gettime () from /lib/librt.so.1
#1  0x0785550b in do_gettime () at tools/qelapsedtimer_unix.cpp:105
#2  qt_gettime () at tools/qelapsedtimer_unix.cpp:119
#3  0x0792c6e5 in QTimerInfoList::updateCurrentTime (this=0xa153bd8) at kernel/qeventdispatcher_unix.cpp:339
#4  0x0792cd55 in QEventDispatcherUNIXPrivate::doSelect (this=0xa153538, flags=..., timeout=0x0) at kernel/qeventdispatcher_unix.cpp:182
#5  0x0792dc25 in QEventDispatcherUNIX::processEvents (this=0xa151788, flags=...) at kernel/qeventdispatcher_unix.cpp:919
#6  0x078fa609 in QEventLoop::processEvents (this=0xaf043280, flags=) at kernel/qeventloop.cpp:149
#7  0x078faa8a in QEventLoop::exec (this=0xaf043280, flags=...) at kernel/qeventloop.cpp:201
#8  0x077f6b7e in QThread::exec (this=0xa151800) at thread/qthread.cpp:490
#9  0x078d935b in QInotifyFileSystemWatcherEngine::run (this=0xa151800) at io/qfilesystemwatcher_inotify.cpp:248
#10 0x077f9df9 in QThreadPrivate::start (arg=0xa151800) at thread/qthread_unix.cpp:266
#11 0x0064ccc9 in start_thread () from /lib/libpthread.so.0
#12 0x004216ae in clone () from /lib/libc.so.6

Thread 1 (Thread 0xb7812720 (LWP 1378)):
[KCrash Handler]
#7  0x00860416 in __kernel_vsyscall ()
#8  0x0037b941 in raise () from /lib/libc.so.6
#9  0x0037ee42 in abort () from /lib/libc.so.6
#10 0x001e64af in KWin::EffectWindowImpl::unrefWindow (this=0xa4e39e0) at ../../kwin/effects.cpp:1289
#11 0x02f00d42 in KWin::DesktopGridEffect::finish (this=0xa491da8) at ../../../kwin/effects/desktopgrid/desktopgrid.cpp:1322
#12 0x02f0393b in KWin::DesktopGridEffect::prePaintScreen (this=0xa491da8, data=..., time=1) at ../../../kwin/effects/desktopgrid/desktopgrid.cpp:146
#13 0x001e885b in KWin::EffectsHandlerImpl::prePaintScreen (this=0xa329f48, data=..., time=1) at ../../kwin/effects.cpp:158
#14 0x00295d30 in KWin::Effect::prePaintScreen (this=0xa2277d0, data=..., time=1) at ../../../kwin/lib/kwineffects.cpp:222
#15 0x001e885b in KWin::EffectsHandlerImpl::prePaintScreen (this=0xa329f48, data=..., time=1) at ../../kwin/effects.cpp:158
#16 0x02f15297 in KWin::LoginEffect::prePaintScreen (this=0xa4d1560, data=..., time=1) at ../../../kwin/effects/login/login.cpp:52
#17 0x001e885b in KWin::EffectsHandlerImpl::prePaintScreen (this=0xa329f48, data=..., time=1) at ../../kwin/effects.cpp:158
#18 0x001cd0f6 in KWin::Scene::paintScreen (this=0xa218c60, mask=0xbfdb2c58, region=0xbfdb2d24) at ../../kwin/scene.cpp:116
#19 0x001d6e7b in KWin::SceneXrender::paint (this=0xa218c60, damage=..., toplevels=...) at ../../kwin/scene_xrender.cpp:278
#20 0x001c7be4 in KWin::Workspace::performCompositing (this=0xa04e968) at ../../kwin/composite.cpp:454
#21 0x00138c1e in KWin::Workspace::qt_metacall (this=0xa04e968, _c=QMetaObject::InvokeMetaMethod, _id=190, _a=0xbfdb2e4c) at ./workspace.moc:583
#22 0x079018ca in QMetaObject::metacall (object=0xa04e968, cl=1378, idx=190, argv=0xbfdb2e4c) at kernel/qmetaobject.cpp:237
#23 0x079146ad in QMetaObject::activate (sender=0xa04ec18, m=0x7a2e5a4, local_signal_index=0, argv=0x0) at kernel/qobject.cpp:3280
#24 0x079661e7 in QTimer::timeout (this=0xa04ec18) at .moc/release-shared/moc_qtimer.cpp:134
#25 0x0791a1ce in QTimer::timerEvent (this=0xa04ec18, e=0xbfdb33a0) at kernel/qtimer.cpp:271
#26 0x0790e504 in QObject::event (this=0xa04ec18, e=0x6) at kernel/qobject.cpp:1183
#27 0x0452ffdc in QApplicationPrivate::notify_helper (this=0x9fb5178, receiver=0xa04ec18, e=0xbfdb33a0) at kernel/qapplication.cpp:4396
#28 0x0453604e in QApplication::notify (this=0xbfdb36a4, receiver=0xa04ec18, e=0xbfdb33a0) at kernel/qapplication.cpp:3798
#29 0x00a3968a in KApplication::notify (this=0xbfdb36a4, receiver=0xa04ec18, event=0xbfdb33a0) at ../../kdeui/kernel/kapplication.cpp:310
#30 0x00155aef in KWin::Application::notify (this=0xbfdb36a4, o=0xa04ec18, e=0xbfdb33a0) at ../../kwin/main.cpp:372
#31 0x078fbb3b in QCoreApplication::notifyInternal (this=0xbfdb36a4, receiver=0xa04ec18, event=0xbfdb33a0) at kernel/qcoreapplication.cpp:732
#32 0x0792dad6 in sendEvent (this=0x9fb5910) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#33 QTimerInfoList::activateTimers (this=0x9fb5910) at kernel/qeventdispatcher_unix.cpp:602
#34 0x0792dc37 in QEventDispatcherUNIX::processEvents (this=0x9f98980, flags=...) at kernel/qeventdispatcher_unix.cpp:923
#35 0x045f30d2 in QEventDispatcherX11::processEvents (this=0x9f98980, flags=...) at kernel/qeventdispatcher_x11.cpp:152
#36 0x078fa609 in QEventLoop::processEvents (this=0xbfdb35f4, flags=) at kernel/qeventloop.cpp:149
#37 0x078faa8a in QEventLoop::exec (this=0xbfdb35f4, flags=...) at kernel/qeventloop.cpp:201
#38 0x078ff00f in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1009
#39 0x0452ee07 in QApplication::exec () at kernel/qapplication.cpp:3672
#40 0x00157c54 in kdemain (argc=3, argv=0xbfdb3904) at ../../kwin/main.cpp:531
#41 0x080485ab in main (argc=3, argv=0xbfdb3904) at kwin_dummy.cpp:3

This bug may be a duplicate of or related to bug 259194.

Possible duplicates by query: bug 262099, bug 259344, bug 259194, bug 255890, bug 254654.

Reported using DrKonqi