Application: plasma-desktop (0.4)
KDE Platform Version: 4.7.3 (4.7.3)
Qt Version: 4.7.4
Operating System: Linux 3.0.0-14-generic i686
Distribution: Ubuntu 11.10

-- Information about the crash:
- Unusual behavior I noticed: Stripes appeared all over the screen and then the panels diappeared and were replaced by black screen.

The crash can be reproduced some of the time.

-- Backtrace:
Application: Shell plochy Plasma (plasma-desktop), signal: Segmentation fault
[Current thread is 1 (Thread 0xb7828b20 (LWP 1544))]

Thread 5 (Thread 0xb1739b70 (LWP 1545)):
#0  0x00237416 in __kernel_vsyscall ()
#1  0x00c0640e in poll () from /lib/i386-linux-gnu/libc.so.6
#2  0x0529734b in g_poll () from /lib/i386-linux-gnu/libglib-2.0.so.0
#3  0x05288896 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#4  0x05288c2a in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#5  0x07240b37 in QEventDispatcherGlib::processEvents (this=0x97b9870, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#6  0x072111dd in QEventLoop::processEvents (this=0xb17392a0, flags=...) at kernel/qeventloop.cpp:149
#7  0x07211421 in QEventLoop::exec (this=0xb17392a0, flags=...) at kernel/qeventloop.cpp:201
#8  0x0711490b in QThread::exec (this=0x97b7db0) at thread/qthread.cpp:498
#9  0x071f1e2d in QInotifyFileSystemWatcherEngine::run (this=0x97b7db0) at io/qfilesystemwatcher_inotify.cpp:248
#10 0x071177b3 in QThreadPrivate::start (arg=0x97b7db0) at thread/qthread_unix.cpp:331
#11 0x0658ed31 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#12 0x00c150ce in clone () from /lib/i386-linux-gnu/libc.so.6
Backtrace stopped: Not enough registers or memory available to unwind further

Thread 4 (Thread 0xafc07b70 (LWP 1546)):
#0  0x075a1d10 in clock_gettime () from /lib/i386-linux-gnu/librt.so.1
#1  0x0716e7d5 in do_gettime (frac=0xafc07010, sec=0xafc07008) at tools/qelapsedtimer_unix.cpp:123
#2  qt_gettime () at tools/qelapsedtimer_unix.cpp:140
#3  0x072414b6 in QTimerInfoList::updateCurrentTime (this=0x994d324) at kernel/qeventdispatcher_unix.cpp:339
#4  0x0724180a in QTimerInfoList::timerWait (this=0x994d324, tm=...) at kernel/qeventdispatcher_unix.cpp:442
#5  0x07240053 in timerSourcePrepareHelper (src=<optimized out>, timeout=0xafc0711c) at kernel/qeventdispatcher_glib.cpp:136
#6  0x072400ed in timerSourcePrepare (source=0x994d2f0, timeout=<optimized out>) at kernel/qeventdispatcher_glib.cpp:169
#7  0x0528788c in g_main_context_prepare () from /lib/i386-linux-gnu/libglib-2.0.so.0
#8  0x05288637 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#9  0x05288c2a in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#10 0x07240b37 in QEventDispatcherGlib::processEvents (this=0x936e900, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#11 0x072111dd in QEventLoop::processEvents (this=0xafc072a0, flags=...) at kernel/qeventloop.cpp:149
#12 0x07211421 in QEventLoop::exec (this=0xafc072a0, flags=...) at kernel/qeventloop.cpp:201
#13 0x0711490b in QThread::exec (this=0x915c5b8) at thread/qthread.cpp:498
#14 0x071f1e2d in QInotifyFileSystemWatcherEngine::run (this=0x915c5b8) at io/qfilesystemwatcher_inotify.cpp:248
#15 0x071177b3 in QThreadPrivate::start (arg=0x915c5b8) at thread/qthread_unix.cpp:331
#16 0x0658ed31 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#17 0x00c150ce in clone () from /lib/i386-linux-gnu/libc.so.6
Backtrace stopped: Not enough registers or memory available to unwind further

Thread 3 (Thread 0xad985b70 (LWP 1557)):
#0  0x00c22f08 in pthread_mutex_lock () from /lib/i386-linux-gnu/libc.so.6
#1  0x05288839 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#2  0x05288f9b in g_main_loop_run () from /lib/i386-linux-gnu/libglib-2.0.so.0
#3  0x05d2ccea in ?? () from /usr/lib/i386-linux-gnu/libgio-2.0.so.0
#4  0x052af5f4 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#5  0x0658ed31 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#6  0x00c150ce in clone () from /lib/i386-linux-gnu/libc.so.6
Backtrace stopped: Not enough registers or memory available to unwind further

Thread 2 (Thread 0xad184b70 (LWP 1560)):
#0  0x00237416 in __kernel_vsyscall ()
#1  0x06592a5c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/i386-linux-gnu/libpthread.so.0
#2  0x00c22cfc in pthread_cond_wait () from /lib/i386-linux-gnu/libc.so.6
#3  0x06edf9a9 in ?? () from /usr/lib/i386-linux-gnu/libQtScript.so.4
#4  0x06edf9ef in ?? () from /usr/lib/i386-linux-gnu/libQtScript.so.4
#5  0x0658ed31 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#6  0x00c150ce in clone () from /lib/i386-linux-gnu/libc.so.6
Backtrace stopped: Not enough registers or memory available to unwind further

Thread 1 (Thread 0xb7828b20 (LWP 1544)):
[KCrash Handler]
#7  operator== (value=0, this=0xb) at /usr/include/qt4/QtCore/qbasicatomic.h:70
#8  isNull (this=0xaf73e60) at /usr/include/qt4/QtCore/qsharedpointer_impl.h:568
#9  operator! (this=0xaf73e60) at /usr/include/qt4/QtCore/qsharedpointer_impl.h:574
#10 TaskManager::TaskItem::task (this=0xa2e8c48) at ../../../libs/taskmanager/taskitem.cpp:113
#11 0x04e6e662 in WindowTaskItem::publishIconGeometry (this=0xa2e8ce8) at ../../../../../plasma/desktop/applets/tasks/windowtaskitem.cpp:120
#12 0x04e7f688 in AbstractTaskItem::timerEvent (this=0xa2e8ce8, event=0xbfacf94c) at ../../../../../plasma/desktop/applets/tasks/abstracttaskitem.cpp:439
#13 0x0722a994 in QObject::event (this=0xa2e8ce8, e=0xbfacf94c) at kernel/qobject.cpp:1181
#14 0x03ea1bd4 in QGraphicsWidget::event (this=0xa2e8ce8, event=0xbfacf94c) at graphicsview/qgraphicswidget.cpp:1455
#15 0x037e2d54 in notify_helper (e=0xbfacf94c, receiver=0xa2e8ce8, this=0x8f93a68) at kernel/qapplication.cpp:4486
#16 QApplicationPrivate::notify_helper (this=0x8f93a68, receiver=0xa2e8ce8, e=0xbfacf94c) at kernel/qapplication.cpp:4458
#17 0x037e8103 in QApplication::notify (this=0xbfacf94c, receiver=0xa2e8ce8, e=0xbfacf94c) at kernel/qapplication.cpp:3886
#18 0x0114a681 in KApplication::notify (this=0x8f80a50, receiver=0xa2e8ce8, event=0xbfacf94c) at ../../kdeui/kernel/kapplication.cpp:311
#19 0x0721219e in QCoreApplication::notifyInternal (this=0x8f80a50, receiver=0xa2e8ce8, event=0xbfacf94c) at kernel/qcoreapplication.cpp:787
#20 0x07242c10 in sendEvent (event=0xbfacf94c, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#21 QTimerInfoList::activateTimers (this=0x8f95ec4) at kernel/qeventdispatcher_unix.cpp:603
#22 0x07240122 in timerSourceDispatch (source=0x8f95e90) at kernel/qeventdispatcher_glib.cpp:184
#23 0x0528825f in g_main_context_dispatch () from /lib/i386-linux-gnu/libglib-2.0.so.0
#24 0x05288990 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#25 0x05288c2a in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#26 0x07240ada in QEventDispatcherGlib::processEvents (this=0x8f42218, flags=...) at kernel/qeventdispatcher_glib.cpp:422
#27 0x0389ae3a in QGuiEventDispatcherGlib::processEvents (this=0x8f42218, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#28 0x072111dd in QEventLoop::processEvents (this=0xbfacfbc4, flags=...) at kernel/qeventloop.cpp:149
#29 0x07211421 in QEventLoop::exec (this=0xbfacfbc4, flags=...) at kernel/qeventloop.cpp:201
#30 0x0721619d in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1064
#31 0x037e08f4 in QApplication::exec () at kernel/qapplication.cpp:3760
#32 0x0068c18b in kdemain (argc=1, argv=0xbfacfdc4) at ../../../../plasma/desktop/shell/main.cpp:120
#33 0x0804850b in main (argc=1, argv=0xbfacfdc4) at plasma-desktop_dummy.cpp:3

Possible duplicates by query: bug 292043, bug 292002, bug 291974, bug 291918, bug 291911.

Reported using DrKonqi