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 3.2.0-35-generic-pae i686
Distribution: Ubuntu 12.04.2 LTS

-- Information about the crash:
I checked out the activities. After I clicked on the Photo activity, nothing Plasma related responded anymore. I killed plasma-desktop from a terminal. Then, a message appeared that KWin crashed.

-- 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 0xafdc2740 (LWP 1939))]

Thread 3 (Thread 0xaada6b40 (LWP 1946)):
#0  0xb77d2424 in __kernel_vsyscall ()
#1  0xb7596e01 in select () at ../sysdeps/unix/syscall-template.S:82
#2  0xb5f8642a in qt_safe_select (nfds=28, fdread=0xaa4005ac, fdwrite=0xaa4007c0, fdexcept=0xaa4009d4, orig_timeout=0x0) at kernel/qcore_unix.cpp:83
#3  0xb5f8aa1b in QEventDispatcherUNIX::select (this=0xaa4004a8, nfds=28, readfds=0xaa4005ac, writefds=0xaa4007c0, exceptfds=0xaa4009d4, timeout=0x0) at kernel/qeventdispatcher_unix.cpp:639
#4  0xb5f8bd2f in QEventDispatcherUNIXPrivate::doSelect (this=0xaa4004b8, flags=..., timeout=0x0) at kernel/qeventdispatcher_unix.cpp:223
#5  0xb5f8c1f4 in QEventDispatcherUNIX::processEvents (this=0xaa4004a8, flags=...) at kernel/qeventdispatcher_unix.cpp:926
#6  0xb5f5550d in QEventLoop::processEvents (this=0xaada6190, flags=...) at kernel/qeventloop.cpp:149
#7  0xb5f557a9 in QEventLoop::exec (this=0xaada6190, flags=...) at kernel/qeventloop.cpp:204
#8  0xb5e3e94c in QThread::exec (this=0x9e24350) at thread/qthread.cpp:501
#9  0xb5f32b5d in QInotifyFileSystemWatcherEngine::run (this=0x9e24350) at io/qfilesystemwatcher_inotify.cpp:248
#10 0xb5e41de0 in QThreadPrivate::start (arg=0x9e24350) at thread/qthread_unix.cpp:298
#11 0xb6494101 in ?? () from /usr/lib/nvidia-current/libGL.so.1
#12 0x5c8b0824 in ?? ()
#13 0xbab80424 in ?? ()
#14 0x65000000 in ?? ()
#15 0x001015ff in ?? ()
#16 0xd3890000 in ?? ()
#17 0xfff0013d in ?? ()
#18 0xc30173ff in ?? ()
#19 0x0fc442e8 in ?? ()
#20 0xafc18100 in ?? ()
Backtrace stopped: previous frame inner to this frame (corrupt stack?)

Thread 2 (Thread 0xaa3ffb40 (LWP 1947)):
#0  0xb77d2424 in __kernel_vsyscall ()
#1  0xb2a2796b in pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/i386/i686/../i486/pthread_cond_wait.S:169
#2  0xb75ab6ec in __pthread_cond_wait (cond=0xb67ba890, mutex=0xb67ba878) at forward.c:139
#3  0xb66b6029 in ?? () from /usr/lib/i386-linux-gnu/libQtScript.so.4
#4  0xb66b606f in ?? () from /usr/lib/i386-linux-gnu/libQtScript.so.4
#5  0xb6494101 in ?? () from /usr/lib/nvidia-current/libGL.so.1
#6  0x5c8b0824 in ?? ()
#7  0xbab80424 in ?? ()
#8  0x65000000 in ?? ()
#9  0x001015ff in ?? ()
#10 0xd3890000 in ?? ()
#11 0xfff0013d in ?? ()
#12 0xc30173ff in ?? ()
#13 0x0fc442e8 in ?? ()
#14 0xafc18100 in ?? ()
Backtrace stopped: previous frame inner to this frame (corrupt stack?)

Thread 1 (Thread 0xafdc2740 (LWP 1939)):
[KCrash Handler]
#7  QProcess::setProcessState (this=0xa9ba8e0, state=QProcess::NotRunning) at io/qprocess.cpp:1770
#8  0xb5ee3397 in QProcessPrivate::cleanup (this=0x9c61588) at io/qprocess.cpp:799
#9  0xb5eeb4d5 in QProcessPrivate::_q_processDied (this=0x9c61588) at io/qprocess.cpp:1058
#10 0xb5eeb5bb in qt_static_metacall (_a=0xbfb04f98, _id=13, _o=0x9fdd3f0, _c=<optimized out>) at .moc/release-shared/moc_qprocess.cpp:92
#11 QProcess::qt_static_metacall (_o=0x9fdd3f0, _c=QMetaObject::InvokeMetaMethod, _id=13, _a=0xbfb04f98) at .moc/release-shared/moc_qprocess.cpp:69
#12 0xb5f6d6b1 in QMetaObject::activate (sender=0xa5f1618, m=0xb60b4478, local_signal_index=0, argv=0xbfb04f98) at kernel/qobject.cpp:3547
#13 0xb5fc0455 in QSocketNotifier::activated (this=0xa5f1618, _t1=35) at .moc/release-shared/moc_qsocketnotifier.cpp:103
#14 0xb5f760df in QSocketNotifier::event (this=0xa5f1618, e=0xbfb05414) at kernel/qsocketnotifier.cpp:317
#15 0xb5440ed4 in notify_helper (e=0xbfb05414, receiver=0xa5f1618, this=0x9ab1840) at kernel/qapplication.cpp:4559
#16 QApplicationPrivate::notify_helper (this=0x9ab1840, receiver=0xa5f1618, e=0xbfb05414) at kernel/qapplication.cpp:4531
#17 0xb544630d in QApplication::notify (this=0xbfb05414, receiver=0xa5f1618, e=0xbfb05414) at kernel/qapplication.cpp:4288
#18 0xb7257e01 in KApplication::notify (this=0xbfb05828, receiver=0xa5f1618, event=0xbfb05414) at ../../kdeui/kernel/kapplication.cpp:311
#19 0xb76ca7ff in ?? () from /usr/lib/kde4/libkdeinit/libkdeinit4_kwin.so
#20 0xb5f5697e in QCoreApplication::notifyInternal (this=0xbfb05828, receiver=0xa5f1618, event=0xbfb05414) at kernel/qcoreapplication.cpp:876
#21 0xb5f8adc3 in sendEvent (event=0xbfb05414, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#22 QEventDispatcherUNIX::activateSocketNotifiers (this=0x9a1aea0) at kernel/qeventdispatcher_unix.cpp:884
#23 0xb5f8be76 in QEventDispatcherUNIXPrivate::doSelect (this=0x9ab1a48, flags=..., timeout=0xbfb05574) at kernel/qeventdispatcher_unix.cpp:309
#24 0xb5f8c1f4 in QEventDispatcherUNIX::processEvents (this=0x9a1aea0, flags=...) at kernel/qeventdispatcher_unix.cpp:926
#25 0xb54fab6e in QEventDispatcherX11::processEvents (this=0x9a1aea0, flags=...) at kernel/qeventdispatcher_x11.cpp:152
#26 0xb5f5550d in QEventLoop::processEvents (this=0xbfb05764, flags=...) at kernel/qeventloop.cpp:149
#27 0xb5f557a9 in QEventLoop::exec (this=0xbfb05764, flags=...) at kernel/qeventloop.cpp:204
#28 0xb5f5aeba in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1148
#29 0xb543ea74 in QApplication::exec () at kernel/qapplication.cpp:3820
#30 0xb76cd7c5 in kdemain () from /usr/lib/kde4/libkdeinit/libkdeinit4_kwin.so
#31 0x0804850b in ?? ()
#32 0xb74c84d3 in __libc_start_main (main=0x80484f0, argc=3, ubp_av=0xbfb05ad4, init=0x80485e0 <__libc_csu_init>, fini=0x8048650 <__libc_csu_fini>, rtld_fini=0xb77e2280 <_dl_fini>, stack_end=0xbfb05acc) at libc-start.c:226
#33 0x08048531 in _start ()

Possible duplicates by query: bug 315123, bug 306995, bug 302922, bug 301516, bug 300955.

Reported using DrKonqi