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 2.6.38-8-generic i686
Distribution: Ubuntu 11.04

-- Information about the crash:
- Custom settings of the application:
bonjour
je venais d'installer kubuntu  sur le pc et je le configurais  pour avoir quatre bureaux séparés qui puissent tourner

The crash can be reproduced every time.

-- Backtrace:
Application: KWin (kwin), signal: Segmentation fault
[Current thread is 1 (Thread 0xb7730720 (LWP 1277))]

Thread 3 (Thread 0xb2bb0b70 (LWP 1282)):
#0  0x00b96d41 in clock_gettime () from /lib/i386-linux-gnu/librt.so.1
#1  0x07614dd8 in do_gettime () at tools/qelapsedtimer_unix.cpp:123
#2  qt_gettime () at tools/qelapsedtimer_unix.cpp:140
#3  0x076e2525 in updateCurrentTime (this=0x9735400, flags=..., timeout=0x0) at kernel/qeventdispatcher_unix.cpp:339
#4  QEventDispatcherUNIXPrivate::doSelect (this=0x9735400, flags=..., timeout=0x0) at kernel/qeventdispatcher_unix.cpp:182
#5  0x076e3326 in QEventDispatcherUNIX::processEvents (this=0x999af30, flags=...) at kernel/qeventdispatcher_unix.cpp:919
#6  0x076b2289 in QEventLoop::processEvents (this=0xb2bb0280, flags=...) at kernel/qeventloop.cpp:149
#7  0x076b2522 in QEventLoop::exec (this=0xb2bb0280, flags=...) at kernel/qeventloop.cpp:201
#8  0x075bc2a0 in QThread::exec (this=0x98b2178) at thread/qthread.cpp:492
#9  0x07693fdb in QInotifyFileSystemWatcherEngine::run (this=0x98b2178) at io/qfilesystemwatcher_inotify.cpp:248
#10 0x075beda2 in QThreadPrivate::start (arg=0x98b2178) at thread/qthread_unix.cpp:320
#11 0x007fbe99 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#12 0x00e4d73e in clone () from /lib/i386-linux-gnu/libc.so.6

Thread 2 (Thread 0xb23afb70 (LWP 1283)):
#0  0x00ba3416 in __kernel_vsyscall () from /usr/lib/libQtNetwork.so.4
#1  0x0080048c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/i386-linux-gnu/libpthread.so.0
#2  0x00e5b3fd in pthread_cond_wait () from /lib/i386-linux-gnu/libc.so.6
#3  0x02cae817 in QTWTF::TCMalloc_PageHeap::scavengerThread (this=0x2dc21c0) at ../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:2359
#4  0x02cae851 in QTWTF::TCMalloc_PageHeap::runScavengerThread (context=0x2dc21c0) at ../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:1464
#5  0x007fbe99 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#6  0x00e4d73e in clone () from /lib/i386-linux-gnu/libc.so.6

Thread 1 (Thread 0xb7730720 (LWP 1277)):
[KCrash Handler]
#7  0x08825f2d in intelDRI2Flush (drawable=0x93af848) at intel_screen.c:106
#8  0x0036d35c in dri2SwapBuffers (pdraw=0x9965a48, target_msc=0, divisor=0, remainder=0) at dri2_glx.c:539
#9  0x003454b7 in glXSwapBuffers (dpy=0x92e9918, drawable=23122164) at glxcmds.c:734
#10 0x00a121de in ?? () from /usr/lib/kde4/libkdeinit/libkdeinit4_kwin.so
#11 0x00a129b0 in ?? () from /usr/lib/kde4/libkdeinit/libkdeinit4_kwin.so
#12 0x009f7886 in ?? () from /usr/lib/kde4/libkdeinit/libkdeinit4_kwin.so
#13 0x076c8214 in QObject::event (this=0x93be3f0, e=0xbf9a4a5c) at kernel/qobject.cpp:1190
#14 0x068aed24 in QApplicationPrivate::process_cmdline (this=0x92e8870) at kernel/qapplication.cpp:573
#15 0x068b38ce in ?? () at ../../include/QtCore/../../src/corelib/global/qglobal.h:2248 from /usr/lib/libQtGui.so.4
#16 0x0058a3ca in KApplication::notify (this=0xbf9a4d74, receiver=0x93be3f0, event=0xbf9a4a5c) at ../../kdeui/kernel/kapplication.cpp:311
#17 0x00986abf in ?? () from /usr/lib/kde4/libkdeinit/libkdeinit4_kwin.so
#18 0x076b30bb in QCoreApplication::notifyInternal (this=0xbf9a4d74, receiver=0x93be3f0, event=0xbf9a4a5c) at kernel/qcoreapplication.cpp:731
#19 0x076e31e4 in sendEvent (this=0x92e9258) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#20 QTimerInfoList::activateTimers (this=0x92e9258) at kernel/qeventdispatcher_unix.cpp:604
#21 0x076e3338 in QEventDispatcherUNIX::processEvents (this=0x92a6aa8, flags=...) at kernel/qeventdispatcher_unix.cpp:923
#22 0x069637ea in ~QAbstractEventDispatcherPrivate (this=0x92a6aa8, __in_chrg=<value optimized out>) at ../../include/QtCore/private/../../../src/corelib/kernel/qabstracteventdispatcher_p.h:64
#23 ~QEventDispatcherGlibPrivate (this=0x92a6aa8, __in_chrg=<value optimized out>) at ../../include/QtCore/private/../../../src/corelib/kernel/qeventdispatcher_glib_p.h:104
#24 QGuiEventDispatcherGlibPrivate::~QGuiEventDispatcherGlibPrivate (this=0x92a6aa8, __in_chrg=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:63
#25 0x076b2289 in QEventLoop::processEvents (this=0xbf9a4cb4, flags=...) at kernel/qeventloop.cpp:149
#26 0x076b2522 in QEventLoop::exec (this=0xbf9a4cb4, flags=...) at kernel/qeventloop.cpp:201
#27 0x076b6ecc in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1008
#28 0x068ac8e7 in operator+ (widget=0xbf9a4d58, touchEvent=0x92e2e20) at ../../include/QtCore/../../src/corelib/tools/qpoint.h:315
#29 QApplicationPrivate::updateTouchPointsForWidget (widget=0xbf9a4d58, touchEvent=0x92e2e20) at kernel/qapplication.cpp:5659
#30 0x009895b2 in kdemain () from /usr/lib/kde4/libkdeinit/libkdeinit4_kwin.so
#31 0x080485bb in main (argc=1, argv=0xbf9a4ff4) at kwin_dummy.cpp:3

Possible duplicates by query: bug 266362, bug 265296, bug 253703.

Reported using DrKonqi