Application: plasma-desktop (0.4)
KDE Platform Version: 4.7.4 (4.7.4)
Qt Version: 4.8.0
Operating System: Linux 3.2.2-1.fc16.i686.PAE i686
Distribution: "Fedora release 16 (Verne)"

-- Information about the crash:
start KDE
panel is ok
system config monitors (switch to two monitors, without notebook display)
now KDE crashed (bottom panel isnt clickable)

The crash can be reproduced every time.

-- Backtrace:
Application: Shell plochy Plasma (plasma-desktop), signal: Segmentation fault
Using host libthread_db library "/lib/libthread_db.so.1".
[Current thread is 1 (Thread 0xb77a5780 (LWP 6361))]

Thread 4 (Thread 0xb5c94b40 (LWP 6880)):
#0  0xb77de424 in __kernel_vsyscall ()
#1  0x4a28985c in pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_cond_wait.S:172
#2  0x4e216f71 in QTWTF::TCMalloc_PageHeap::scavengerThread (this=0x4e317680) at ../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:2359
#3  0x4e216fb0 in QTWTF::TCMalloc_PageHeap::runScavengerThread (context=0x4e317680) at ../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:1464
#4  0x4a285cd3 in start_thread (arg=0xb5c94b40) at pthread_create.c:309
#5  0x4a1bc83e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:133

Thread 3 (Thread 0xaf137b40 (LWP 6881)):
#0  0x4a2a0001 in __GI_clock_gettime (clock_id=1, tp=0xaf136f68) at ../sysdeps/unix/clock_gettime.c:116
#1  0x4adc8e06 in do_gettime (frac=0xaf136f60, sec=0xaf136f58) at tools/qelapsedtimer_unix.cpp:123
#2  qt_gettime () at tools/qelapsedtimer_unix.cpp:140
#3  0x4aeb2bf7 in QTimerInfoList::updateCurrentTime (this=0xb5300cac) at kernel/qeventdispatcher_unix.cpp:343
#4  0x4aeb2f5b in QTimerInfoList::timerWait (this=0xb5300cac, tm=...) at kernel/qeventdispatcher_unix.cpp:450
#5  0x4aeb17a3 in timerSourcePrepareHelper (src=<optimized out>, timeout=0xaf13706c) at kernel/qeventdispatcher_glib.cpp:136
#6  0x4aeb183d in timerSourcePrepare (source=0xb5300c78, timeout=<optimized out>) at kernel/qeventdispatcher_glib.cpp:169
#7  0x4a370c4c in g_main_context_prepare (context=0xb5301e40, priority=0xaf1370c8) at gmain.c:2762
#8  0x4a371a08 in g_main_context_iterate (context=0xb5301e40, block=1, dispatch=1, self=0xb5301dd8) at gmain.c:3069
#9  0x4a37201f in g_main_context_iteration (context=0xb5301e40, may_block=1) at gmain.c:3152
#10 0x4aeb2317 in QEventDispatcherGlib::processEvents (this=0xb5300468, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#11 0x4ae7e4ee in QEventLoop::processEvents (this=0xaf137200, flags=...) at kernel/qeventloop.cpp:149
#12 0x4ae7e799 in QEventLoop::exec (this=0xaf137200, flags=...) at kernel/qeventloop.cpp:204
#13 0x4ad66b2c in QThread::exec (this=0x8f049a8) at thread/qthread.cpp:501
#14 0x4ae5b35e in QInotifyFileSystemWatcherEngine::run (this=0x8f049a8) at io/qfilesystemwatcher_inotify.cpp:248
#15 0x4ad6a0b1 in QThreadPrivate::start (arg=0x8f049a8) at thread/qthread_unix.cpp:298
#16 0x4a285cd3 in start_thread (arg=0xaf137b40) at pthread_create.c:309
#17 0x4a1bc83e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:133

Thread 2 (Thread 0xac3a3b40 (LWP 6996)):
#0  0xb77de424 in __kernel_vsyscall ()
#1  0x4a289c04 in pthread_cond_timedwait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_cond_timedwait.S:238
#2  0x4ad6a5b0 in wait (time=30000, this=0x8d55148) at thread/qwaitcondition_unix.cpp:84
#3  QWaitCondition::wait (this=0x8e2bdf0, mutex=0x8e2bdec, time=30000) at thread/qwaitcondition_unix.cpp:158
#4  0x4ad5c84c in QThreadPoolThread::run (this=0x8e2d1a8) at concurrent/qthreadpool.cpp:141
#5  0x4ad6a0b1 in QThreadPrivate::start (arg=0x8e2d1a8) at thread/qthread_unix.cpp:298
#6  0x4a285cd3 in start_thread (arg=0xac3a3b40) at pthread_create.c:309
#7  0x4a1bc83e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:133

Thread 1 (Thread 0xb77a5780 (LWP 6361)):
[KCrash Handler]
#7  QWidget::mapToParent (this=0x0, pos=...) at kernel/qwidget.cpp:4299
#8  0x4b7ac760 in QWidget::mapTo (this=0x9359e90, parent=0x8eacba0, pos=...) at kernel/qwidget.cpp:4255
#9  0x4b9af56e in qt_flush (tlwOffset=<optimized out>, tlw=<optimized out>, windowSurface=<optimized out>, region=<optimized out>, widget=<optimized out>) at painting/qbackingstore.cpp:117
#10 QWidgetBackingStore::flush (this=0x8eebbe0, widget=0x4b98f1c0, surface=0x0) at painting/qbackingstore.cpp:1445
#11 0x4b9b0a6b in QWidgetBackingStore::sync (this=0x8eebbe0) at painting/qbackingstore.cpp:1376
#12 0x4b9b0e11 in QWidgetBackingStore::sync (this=0x8eebbe0, exposedWidget=0x8eacba0, exposedRegion=...) at painting/qbackingstore.cpp:1161
#13 0x4b7afef5 in QWidgetPrivate::syncBackingStore (this=0x8ead330, region=...) at kernel/qwidget.cpp:1899
#14 0x4b7ecf3c in QETWidget::translatePaintEvent (this=0x8eacba0, event=0xbfd5b30c) at kernel/qapplication_x11.cpp:5234
#15 0x4b7ed9b8 in QApplication::x11ProcessEvent (this=0x8acd540, event=0xbfd5b30c) at kernel/qapplication_x11.cpp:3541
#16 0x4b7ef2f1 in QETWidget::translateMouseEvent (this=0x8d7d958, event=0xbfd5b70c) at kernel/qapplication_x11.cpp:4252
#17 0x4b7ede4d in QApplication::x11ProcessEvent (this=0x8acd540, event=0xbfd5b70c) at kernel/qapplication_x11.cpp:3641
#18 0x4b818e05 in x11EventSourceDispatch (s=0x8ae3200, callback=0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:148
#19 0x4a37162f in g_main_dispatch (context=0x8ae1cf0) at gmain.c:2441
#20 g_main_context_dispatch (context=0x8ae1cf0) at gmain.c:3011
#21 0x4a371d70 in g_main_context_iterate (context=0x8ae1cf0, block=1245186064, dispatch=1, self=0x8ae4fa8) at gmain.c:3089
#22 0x4a37201f in g_main_context_iteration (context=0x8ae1cf0, may_block=1) at gmain.c:3152
#23 0x4aeb22b8 in QEventDispatcherGlib::processEvents (this=0x8a8fd48, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#24 0x4b818a9b in QGuiEventDispatcherGlib::processEvents (this=0x8a8fd48, flags=...) at kernel/qguieventdispatcher_glib.cpp:207
#25 0x4ae7e4ee in QEventLoop::processEvents (this=0xbfd5ba14, flags=...) at kernel/qeventloop.cpp:149
#26 0x4ae7e799 in QEventLoop::exec (this=0xbfd5ba14, flags=...) at kernel/qeventloop.cpp:204
#27 0x4ae8393b in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1148
#28 0x4b761f35 in QApplication::exec () at kernel/qapplication.cpp:3811
#29 0x4d942b36 in kdemain (argc=1, argv=0xbfd5bc14) at /usr/src/debug/kde-workspace-4.7.4/plasma/desktop/shell/main.cpp:120
#30 0x0804873c in main (argc=1, argv=0xbfd5bc14) at /usr/src/debug/kde-workspace-4.7.4/i686-redhat-linux-gnu/plasma/desktop/shell/plasma-desktop_dummy.cpp:3

Possible duplicates by query: bug 289799, bug 286390, bug 279949, bug 278130, bug 277006.

Reported using DrKonqi