Application: plasma-desktop (0.4)
KDE Platform Version: 4.8.4 (4.8.4) (Compiled from sources)
Qt Version: 4.8.1
Operating System: Linux 3.2.0-30-generic x86_64
Distribution: Linux Mint 13 Maya

-- Information about the crash:
- What I was doing when the application crashed:
I had just rebooted the laptop after disconnecting my second monitor which I was suspect of causing crashes.

- Unusual behavior I noticed:
I noticed with the laptop NOT connected or Disconnected completely from the ViewSonic VG2021m Monitor that my Sony Vaio Laptop's Monitor now  had a extra panel that I had placed on the ViewSonic before I rebooted from another crash involving the Amorak Music Player.  I left clicked on the extra panel which should not have been there and removed the panel.  The Sony Vaio screen then Flashed and the plasma desktop crashed resulting in this report.

- Custom settings of the application:
I have my desktop layout view as Search and Launch with a few widgets at the top of the screen and the Standard Linux Mint (their Logo default for KDE version) at the bottom of my monitor screen.  In the middle of the screen are the applications I had selected to be there.

The crash can be reproduced every time.

-- Backtrace:
Application: Plasma Desktop Shell (plasma-desktop), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f4a0ce86780 (LWP 4008))]

Thread 5 (Thread 0x7f49ec22e700 (LWP 4009)):
#0  0x00007fff391cb8de in ?? ()
#1  0x00007f4a00bbf15d in __GI_clock_gettime (clock_id=<optimized out>, tp=<optimized out>) at ../sysdeps/unix/clock_gettime.c:116
#2  0x00007f4a09859bb4 in do_gettime (frac=0x7f49ec22db98, sec=0x7f49ec22db90) at tools/qelapsedtimer_unix.cpp:123
#3  qt_gettime () at tools/qelapsedtimer_unix.cpp:140
#4  0x00007f4a09931b8d in QTimerInfoList::updateCurrentTime (this=0x7f49e4002860) at kernel/qeventdispatcher_unix.cpp:343
#5  0x00007f4a09931ec3 in QTimerInfoList::timerWait (this=0x7f49e4002860, tm=...) at kernel/qeventdispatcher_unix.cpp:450
#6  0x00007f4a0993097c in timerSourcePrepareHelper (src=<optimized out>, timeout=0x7f49ec22dc6c) at kernel/qeventdispatcher_glib.cpp:136
#7  0x00007f4a09930a25 in timerSourcePrepare (source=<optimized out>, timeout=<optimized out>) at kernel/qeventdispatcher_glib.cpp:169
#8  0x00007f4a0090d846 in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#9  0x00007f4a0090df5b in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#10 0x00007f4a0090e164 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#11 0x00007f4a09931426 in QEventDispatcherGlib::processEvents (this=0x7f49e40008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#12 0x00007f4a09900c82 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#13 0x00007f4a09900ed7 in QEventLoop::exec (this=0x7f49ec22ddd0, flags=...) at kernel/qeventloop.cpp:204
#14 0x00007f4a097fffa7 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:501
#15 0x00007f4a098e09ff in QInotifyFileSystemWatcherEngine::run (this=0x172b280) at io/qfilesystemwatcher_inotify.cpp:248
#16 0x00007f4a09802fcb in QThreadPrivate::start (arg=0x172b280) at thread/qthread_unix.cpp:298
#17 0x00007f4a01212e9a in start_thread (arg=0x7f49ec22e700) at pthread_create.c:308
#18 0x00007f4a0c76b4bd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#19 0x0000000000000000 in ?? ()

Thread 4 (Thread 0x7f49e1f91700 (LWP 4010)):
#0  0x00007fff391cb8de in ?? ()
#1  0x00007f4a00bbf15d in __GI_clock_gettime (clock_id=<optimized out>, tp=<optimized out>) at ../sysdeps/unix/clock_gettime.c:116
#2  0x00007f4a09859bb4 in do_gettime (frac=0x7f49e1f90b98, sec=0x7f49e1f90b90) at tools/qelapsedtimer_unix.cpp:123
#3  qt_gettime () at tools/qelapsedtimer_unix.cpp:140
#4  0x00007f4a09931b8d in QTimerInfoList::updateCurrentTime (this=0x7f49dc002660) at kernel/qeventdispatcher_unix.cpp:343
#5  0x00007f4a09931ec3 in QTimerInfoList::timerWait (this=0x7f49dc002660, tm=...) at kernel/qeventdispatcher_unix.cpp:450
#6  0x00007f4a0993097c in timerSourcePrepareHelper (src=<optimized out>, timeout=0x7f49e1f90c6c) at kernel/qeventdispatcher_glib.cpp:136
#7  0x00007f4a09930a25 in timerSourcePrepare (source=<optimized out>, timeout=<optimized out>) at kernel/qeventdispatcher_glib.cpp:169
#8  0x00007f4a0090d846 in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#9  0x00007f4a0090df5b in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#10 0x00007f4a0090e164 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#11 0x00007f4a09931426 in QEventDispatcherGlib::processEvents (this=0x7f49dc0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#12 0x00007f4a09900c82 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#13 0x00007f4a09900ed7 in QEventLoop::exec (this=0x7f49e1f90dd0, flags=...) at kernel/qeventloop.cpp:204
#14 0x00007f4a097fffa7 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:501
#15 0x00007f4a098e09ff in QInotifyFileSystemWatcherEngine::run (this=0x26cae60) at io/qfilesystemwatcher_inotify.cpp:248
#16 0x00007f4a09802fcb in QThreadPrivate::start (arg=0x26cae60) at thread/qthread_unix.cpp:298
#17 0x00007f4a01212e9a in start_thread (arg=0x7f49e1f91700) at pthread_create.c:308
#18 0x00007f4a0c76b4bd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#19 0x0000000000000000 in ?? ()

Thread 3 (Thread 0x7f49da8d4700 (LWP 4013)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f4a066e5222 in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#2  0x00007f4a066e5259 in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#3  0x00007f4a01212e9a in start_thread (arg=0x7f49da8d4700) at pthread_create.c:308
#4  0x00007f4a0c76b4bd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#5  0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7f49d34af700 (LWP 4018)):
#0  0x00007f4a009495d1 in g_mutex_unlock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f4a0090e02a in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f4a0090e49a in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f49d3d7a406 in ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#4  0x00007f4a0092f9e5 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f4a01212e9a in start_thread (arg=0x7f49d34af700) at pthread_create.c:308
#6  0x00007f4a0c76b4bd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#7  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f4a0ce86780 (LWP 4008)):
[KCrash Handler]
#6  0x00000000034edc98 in ?? ()
#7  0x00007f4a09917a78 in QObject::connect (sender=0x30c6c50, signal=0x7f49e9e69478 "2destroyed()", receiver=0x3039ef0, method=0x7f49e9e69467 "1widgetDeleted()", type=Qt::AutoConnection) at kernel/qobject.cpp:2551
#8  0x00007f49e9e4ae68 in SystemTray::Task::widget (this=0x3039ef0, host=0x21e90a0, createIfNecessary=<optimized out>) at ../../../../../plasma/generic/applets/systemtray/core/task.cpp:83
#9  0x00007f49e9e65c66 in SystemTray::TaskArea::addWidgetForTask (this=0x21e55c0, task=0x3039ef0) at ../../../../../plasma/generic/applets/systemtray/ui/taskarea.cpp:265
#10 0x00007f49e9e66326 in SystemTray::TaskArea::addTask (this=0x21e55c0, task=<optimized out>) at ../../../../../plasma/generic/applets/systemtray/ui/taskarea.cpp:196
#11 0x00007f4a09916281 in QMetaObject::activate (sender=0x1fe1bf0, m=<optimized out>, local_signal_index=<optimized out>, argv=0x7fff3913cdb0) at kernel/qobject.cpp:3547
#12 0x00007f49e9e499b2 in SystemTray::Manager::taskChanged (this=<optimized out>, _t1=0x3039ef0) at ./manager.moc:120
#13 0x00007f4a09916281 in QMetaObject::activate (sender=0x3039ef0, m=<optimized out>, local_signal_index=<optimized out>, argv=0x7fff3913cf00) at kernel/qobject.cpp:3547
#14 0x00007f49e9e4a8af in SystemTray::Task::changed (this=<optimized out>, _t1=0x3039ef0) at ./task.moc:128
#15 0x00007f4a0991b446 in QObject::event (this=0x3039ef0, e=<optimized out>) at kernel/qobject.cpp:1195
#16 0x00007f4a08c84894 in notify_helper (e=0x2333f30, receiver=0x3039ef0, this=0x1687e20) at kernel/qapplication.cpp:4559
#17 QApplicationPrivate::notify_helper (this=0x1687e20, receiver=0x3039ef0, e=0x2333f30) at kernel/qapplication.cpp:4531
#18 0x00007f4a08c89713 in QApplication::notify (this=0x168c2d0, receiver=0x3039ef0, e=0x2333f30) at kernel/qapplication.cpp:4420
#19 0x00007f4a0a5e59e6 in KApplication::notify (this=0x168c2d0, receiver=0x3039ef0, event=0x2333f30) at ../../kdeui/kernel/kapplication.cpp:311
#20 0x00007f4a09901e9c in QCoreApplication::notifyInternal (this=0x168c2d0, receiver=0x3039ef0, event=0x2333f30) at kernel/qcoreapplication.cpp:876
#21 0x00007f4a09905c6a in sendEvent (event=0x2333f30, receiver=0x3039ef0) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#22 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x160e1f0) at kernel/qcoreapplication.cpp:1500
#23 0x00007f4a09930f93 in sendPostedEvents () at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:236
#24 postEventSourceDispatch (s=<optimized out>) at kernel/qeventdispatcher_glib.cpp:279
#25 0x00007f4a0090dd53 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#26 0x00007f4a0090e0a0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#27 0x00007f4a0090e164 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#28 0x00007f4a099313bf in QEventDispatcherGlib::processEvents (this=0x160fad0, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#29 0x00007f4a08d2cd5e in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#30 0x00007f4a09900c82 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#31 0x00007f4a09900ed7 in QEventLoop::exec (this=0x7fff3913d810, flags=...) at kernel/qeventloop.cpp:204
#32 0x00007f4a09905f67 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1148
#33 0x00007f4a0ca77a13 in kdemain (argc=1, argv=0x7fff3913dbf8) at ../../../../plasma/desktop/shell/main.cpp:120
#34 0x00007f4a0c69a76d in __libc_start_main (main=0x400640 <main(int, char**)>, argc=1, ubp_av=0x7fff3913dbf8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fff3913dbe8) at libc-start.c:226
#35 0x0000000000400671 in _start ()

This bug may be a duplicate of or related to bug 290712.

Possible duplicates by query: bug 306117, bug 305012, bug 304637, bug 304060, bug 302501.

Reported using DrKonqi