Application: kwin (4.8.3 (4.8.3))
KDE Platform Version: 4.8.3 (4.8.3)
Qt Version: 4.8.1
Operating System: Linux 3.2.0-24-generic-pae i686
Distribution: Ubuntu 12.04 LTS

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

I did nothing - NXserver-session (not connected by client) was ideling.

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 0xb1a64740 (LWP 25453))]

Thread 3 (Thread 0xae840b40 (LWP 25458)):
#0  0xb2a4adcd in clock_gettime () from /lib/i386-linux-gnu/librt.so.1
#1  0xb5e7d315 in do_gettime (frac=0xae83ffe0, sec=0xae83ffd8) at tools/qelapsedtimer_unix.cpp:123
#2  qt_gettime () at tools/qelapsedtimer_unix.cpp:140
#3  0xb5f67226 in QTimerInfoList::updateCurrentTime (this=0xadf00b34) at kernel/qeventdispatcher_unix.cpp:343
#4  0xb5f68c2b in QEventDispatcherUNIXPrivate::doSelect (this=0xadf00498, flags=..., timeout=0x0) at kernel/qeventdispatcher_unix.cpp:186
#5  0xb5f691f4 in QEventDispatcherUNIX::processEvents (this=0xadf00488, flags=...) at kernel/qeventdispatcher_unix.cpp:926
#6  0xb5f3250d in QEventLoop::processEvents (this=0xae840240, flags=...) at kernel/qeventloop.cpp:149
#7  0xb5f327a9 in QEventLoop::exec (this=0xae840240, flags=...) at kernel/qeventloop.cpp:204
#8  0xb5e1b94c in QThread::exec (this=0x9ff36f0) at thread/qthread.cpp:501
#9  0xb5f0fb5d in QInotifyFileSystemWatcherEngine::run (this=0x9ff36f0) at io/qfilesystemwatcher_inotify.cpp:248
#10 0xb5e1ede0 in QThreadPrivate::start (arg=0x9ff36f0) at thread/qthread_unix.cpp:298
#11 0xb2a01d4c in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#12 0xb74eface in clone () from /lib/i386-linux-gnu/libc.so.6

Thread 2 (Thread 0xadeffb40 (LWP 25460)):
#0  0xb7714424 in __kernel_vsyscall ()
#1  0xb2a0596b in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/i386-linux-gnu/libpthread.so.0
#2  0xb74fd3dc in pthread_cond_wait () from /lib/i386-linux-gnu/libc.so.6
#3  0xb660c029 in ?? () from /usr/lib/i386-linux-gnu/libQtScript.so.4
#4  0xb660c06f in ?? () from /usr/lib/i386-linux-gnu/libQtScript.so.4
#5  0xb2a01d4c in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#6  0xb74eface in clone () from /lib/i386-linux-gnu/libc.so.6

Thread 1 (Thread 0xb1a64740 (LWP 25453)):
[KCrash Handler]
#7  0xb747d1d6 in free () from /lib/i386-linux-gnu/libc.so.6
#8  0xb6789f9b in XFree (data=0x1) at ../../src/XlibInt.c:1701
#9  0xb6736c76 in XRRUpdateConfiguration (event=0xbfc90e0c) at ../../src/Xrandr.c:446
#10 0xb761d3b7 in KWin::Workspace::workspaceEvent (this=0x9f278b8, e=0xbfc90e0c) at ../../kwin/events.cpp:460
#11 0xb760d632 in KWin::Application::x11EventFilter (this=0xbfc91058, e=0xbfc90e0c) at ../../kwin/main.cpp:359
#12 0xb5499534 in qt_x11EventFilter (ev=0xbfc90e0c) at kernel/qapplication_x11.cpp:441
#13 qt_x11EventFilter (ev=0xbfc90e0c) at kernel/qapplication_x11.cpp:429
#14 0xb54a9207 in QApplication::x11ProcessEvent (this=0xbfc91058, event=0xbfc90e0c) at kernel/qapplication_x11.cpp:3444
#15 0xb54d7a88 in QEventDispatcherX11::processEvents (this=0x9e33ea0, flags=...) at kernel/qeventdispatcher_x11.cpp:132
#16 0xb5f3250d in QEventLoop::processEvents (this=0xbfc90f94, flags=...) at kernel/qeventloop.cpp:149
#17 0xb5f327a9 in QEventLoop::exec (this=0xbfc90f94, flags=...) at kernel/qeventloop.cpp:204
#18 0xb5f37eba in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1148
#19 0xb541ba74 in QApplication::exec () at kernel/qapplication.cpp:3820
#20 0xb76105b5 in kdemain (argc=3, argv=0xbfc91304) at ../../kwin/main.cpp:541
#21 0x0804850b in main (argc=3, argv=0xbfc91304) at kwin_dummy.cpp:3

Possible duplicates by query: bug 300515, bug 300234, bug 300174, bug 298845, bug 298370.

Reported using DrKonqi