Application: kwin (4.8.5 (4.8.5))
KDE Platform Version: 4.8.5 (4.8.5)
Qt Version: 4.8.1
Operating System: Linux 3.2.0-32-generic i686
Distribution: Linux Mint 13 Maya

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

Select the OpenGL render in SystemSettings application.
OpenGL OpenGL doesn't work.
this error was popped after last updated at friday, 26 oct

The crash can be reproduced every time.

-- Backtrace:
Application: KWin (kwin), signal: Segmentation fault
Using host libthread_db library "/lib/i386-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0xb77ab740 (LWP 1866))]

Thread 3 (Thread 0xb4b3cb40 (LWP 1872)):
#0  0x003ebdcd in clock_gettime () from /lib/i386-linux-gnu/librt.so.1
#1  0x02d99315 in do_gettime (frac=0xb4b3bfe0, sec=0xb4b3bfd8) at tools/qelapsedtimer_unix.cpp:123
#2  qt_gettime () at tools/qelapsedtimer_unix.cpp:140
#3  0x02e83226 in QTimerInfoList::updateCurrentTime (this=0xb4200b34) at kernel/qeventdispatcher_unix.cpp:343
#4  0x02e84c2b in QEventDispatcherUNIXPrivate::doSelect (this=0xb4200498, flags=..., timeout=0x0) at kernel/qeventdispatcher_unix.cpp:186
#5  0x02e851f4 in QEventDispatcherUNIX::processEvents (this=0xb4200488, flags=...) at kernel/qeventdispatcher_unix.cpp:926
#6  0x02e4e50d in QEventLoop::processEvents (this=0xb4b3c240, flags=...) at kernel/qeventloop.cpp:149
#7  0x02e4e7a9 in QEventLoop::exec (this=0xb4b3c240, flags=...) at kernel/qeventloop.cpp:204
#8  0x02d3794c in QThread::exec (this=0x9afc880) at thread/qthread.cpp:501
#9  0x02e2bb5d in QInotifyFileSystemWatcherEngine::run (this=0x9afc880) at io/qfilesystemwatcher_inotify.cpp:248
#10 0x02d3ade0 in QThreadPrivate::start (arg=0x9afc880) at thread/qthread_unix.cpp:298
#11 0x02a1cd4c in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#12 0x001ffd3e in clone () from /lib/i386-linux-gnu/libc.so.6

Thread 2 (Thread 0xb41ffb40 (LWP 1873)):
#0  0x00110416 in __kernel_vsyscall ()
#1  0x02a2096b in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/i386-linux-gnu/libpthread.so.0
#2  0x0020d64c in pthread_cond_wait () from /lib/i386-linux-gnu/libc.so.6
#3  0x01297029 in ?? () from /usr/lib/i386-linux-gnu/libQtScript.so.4
#4  0x0129706f in ?? () from /usr/lib/i386-linux-gnu/libQtScript.so.4
#5  0x02a1cd4c in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#6  0x001ffd3e in clone () from /lib/i386-linux-gnu/libc.so.6

Thread 1 (Thread 0xb77ab740 (LWP 1866)):
[KCrash Handler]
#7  nouveau_flush (ctx=0xa0a7bd0) at nouveau_driver.c:70
#8  nouveau_flush (ctx=0xa0a7bd0) at nouveau_driver.c:57
#9  0x0657b4d0 in _mesa_flush (ctx=0xa0a7bd0) at main/context.c:1652
#10 0x0657b572 in _mesa_make_current (newCtx=0x0, drawBuffer=0x0, readBuffer=0x0) at main/context.c:1431
#11 0x06701a34 in _mesa_meta_free (ctx=0xa0a7bd0) at drivers/common/meta.c:417
#12 0x0735d02c in nouveau_context_deinit (ctx=0xa0a7bd0) at nouveau_context.c:171
#13 0x07371b48 in nv20_context_destroy (ctx=0xa0a7bd0) at nv20_context.c:427
#14 0x0735d088 in nouveau_context_destroy (dri_ctx=0x9cf00a8) at nouveau_context.c:187
#15 0x0735993a in driDestroyContext (pcp=0x9cf00a8) at ../common/dri_util.c:277
#16 0x005b839a in dri2_destroy_context (context=0x9b19a48) at dri2_glx.c:132
#17 0x0058eda2 in glXDestroyContext (ctx=0x9b19a48, dpy=0x999f680) at glxcmds.c:424
#18 glXDestroyContext (dpy=0x999f680, ctx=0x9b19a48) at glxcmds.c:405
#19 0x004d0826 in KWin::CompositingPrefs::deleteGLXContext (this=0xbfdba378) at ../../kwin/compositingprefs.cpp:282
#20 0x004d1234 in KWin::CompositingPrefs::detect (this=0xbfdba378) at ../../kwin/compositingprefs.cpp:223
#21 0x0044b020 in KWin::Options::reloadCompositingSettings (this=0x9a8d498, force=true) at ../../kwin/options.cpp:313
#22 0x0049d408 in KWin::Workspace::setupCompositing (this=0x9a0eab0) at ../../kwin/composite.cpp:95
#23 0x0049df45 in KWin::Workspace::setupCompositing (this=0x9a0eab0) at ../../kwin/composite.cpp:87
#24 0x00423187 in KWin::Workspace::slotReinitCompositing (this=0x9a0eab0) at ../../kwin/workspace.cpp:1076
#25 0x0042a6ed in qt_static_metacall (_a=0xbfdba89c, _id=76, _o=0x9a0eab0, _c=<optimized out>) at ./workspace.moc:347
#26 KWin::Workspace::qt_static_metacall (_o=0x9a0eab0, _c=QMetaObject::InvokeMetaMethod, _id=76, _a=0xbfdba89c) at ./workspace.moc:265
#27 0x0042aacc in KWin::Workspace::qt_metacall (this=0x9a0eab0, _c=QMetaObject::InvokeMetaMethod, _id=<optimized out>, _a=0xbfdba89c) at ./workspace.moc:436
#28 0x04e06a38 in QDBusConnectionPrivate::deliverCall (this=0x9984238, object=0x9a0eab0, msg=..., metaTypes=..., slotIdx=0) at qdbusintegrator.cpp:947
#29 0x04e10c8d in QDBusCallDeliveryEvent::placeMetaCall (this=0xa0517e0, object=0x9a0eab0) at qdbusintegrator_p.h:103
#30 0x02e6ac7b in QObject::event (this=0x9a0eab0, e=0xa0517e0) at kernel/qobject.cpp:1195
#31 0x017b2ed4 in notify_helper (e=0xa0517e0, receiver=0x9a0eab0, this=0x998aa00) at kernel/qapplication.cpp:4559
#32 QApplicationPrivate::notify_helper (this=0x998aa00, receiver=0x9a0eab0, e=0xa0517e0) at kernel/qapplication.cpp:4531
#33 0x017b830d in QApplication::notify (this=0xa0517e0, receiver=0x9a0eab0, e=0xa0517e0) at kernel/qapplication.cpp:4288
#34 0x00852e01 in KApplication::notify (this=0xbfdbb0b8, receiver=0x9a0eab0, event=0xa0517e0) at ../../kdeui/kernel/kapplication.cpp:311
#35 0x004477ff in notify (e=0xa0517e0, o=0x9a0eab0, this=0xbfdbb0b8) at ../../kwin/main.cpp:368
#36 KWin::Application::notify (this=0xbfdbb0b8, o=0x9a0eab0, e=0xa0517e0) at ../../kwin/main.cpp:364
#37 0x02e4f97e in QCoreApplication::notifyInternal (this=0xbfdbb0b8, receiver=0x9a0eab0, event=0xa0517e0) at kernel/qcoreapplication.cpp:876
#38 0x02e53ad8 in sendEvent (event=<optimized out>, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#39 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x994d130) at kernel/qcoreapplication.cpp:1500
#40 0x02e53e0c in QCoreApplication::sendPostedEvents (receiver=0x0, event_type=0) at kernel/qcoreapplication.cpp:1393
#41 0x0186c93d in sendPostedEvents () at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:236
#42 QEventDispatcherX11::processEvents (this=0x994deb8, flags=...) at kernel/qeventdispatcher_x11.cpp:75
#43 0x02e4e50d in QEventLoop::processEvents (this=0xbfdbaff4, flags=...) at kernel/qeventloop.cpp:149
#44 0x02e4e7a9 in QEventLoop::exec (this=0xbfdbaff4, flags=...) at kernel/qeventloop.cpp:204
#45 0x02e53eba in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1148
#46 0x017b0a74 in QApplication::exec () at kernel/qapplication.cpp:3820
#47 0x0044a7c5 in kdemain (argc=1, argv=0xbfdbb364) at ../../kwin/main.cpp:541
#48 0x0804850b in main (argc=1, argv=0xbfdbb364) at kwin_dummy.cpp:3

This bug may be a duplicate of or related to bug 308780.

Possible duplicates by query: bug 308780, bug 306795.

Reported using DrKonqi