Bug 290712

Summary:	Plasma Crash after removing Panel [@ SystemTray::Task::widget]
Product:	[Unmaintained] plasma4	Reporter:	Steven Sroka <Sroka.Steven>
Component:	widget-systemtray	Assignee:	Plasma Bugs List <plasma-bugs>
Status:	RESOLVED UNMAINTAINED
Severity:	crash	CC:	a.j.buxton, adan.haika, afief.h, andrestrip, atomicben, bharatgourabdas, cfeck, ckascha78, danigra83, darth.surtur, Discohydra, dj2u, faunris, gabriel.werner, gerdar20, greg, hadrouj, harmol22, kdedev, kelley.castleberry, lazlo.layzlow, lundgren, mauro.miolo, monikakrug, myounis.mcs, pxhayes, rchelson, simonandric5, soheby, solitary05, stefzanetti, stephan.vanniekerk, sulakandr, sven.burmeister, techno_premium, techphreek, Yoh0xFF
Priority:	NOR
Version:	4.11.10
Target Milestone:	---
Platform:	Chakra
OS:	Linux
Latest Commit:		Version Fixed In:
Sentry Crash Report:
Attachments:	New crash information added by DrKonqi New crash information added by DrKonqi New crash information added by DrKonqi New crash information added by DrKonqi New crash information added by DrKonqi New crash information added by DrKonqi New crash information added by DrKonqi New crash information added by DrKonqi New crash information added by DrKonqi New crash information added by DrKonqi New crash information added by DrKonqi

Description Steven Sroka 2012-01-05 16:51:05 UTC

Application: plasma-desktop (0.4)
KDE Platform Version: 4.7.97 (4.8 RC2 (4.7.97)
Qt Version: 4.8.0
Operating System: Linux 3.1-CHAKRA x86_64
Distribution: "Chakra Linux"

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

Removed a panel. Only had a the System Tray and Digital Clock widget on the Panel.

-- Backtrace:
Application: Plasma Desktop Shell (kdeinit4), signal: Segmentation fault
[Current thread is 1 (Thread 0x7f89ed958760 (LWP 1768))]

Thread 4 (Thread 0x7f89c8ede700 (LWP 1784)):
#0  0x00007f89eaf57123 in poll () from /lib/libc.so.6
#1  0x00007f89e7f86c14 in ?? () from /usr/lib/libglib-2.0.so.0
#2  0x00007f89e7f8714d in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#3  0x00007f89ec57cfb6 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#4  0x00007f89ec54ce12 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#5  0x00007f89ec54d067 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#6  0x00007f89ec44cbf7 in QThread::exec() () from /usr/lib/libQtCore.so.4
#7  0x00007f89ec52cc8f in ?? () from /usr/lib/libQtCore.so.4
#8  0x00007f89ec44fc1b in ?? () from /usr/lib/libQtCore.so.4
#9  0x00007f89ec1bedf0 in start_thread () from /lib/libpthread.so.0
#10 0x00007f89eaf5f39d in clone () from /lib/libc.so.6
#11 0x0000000000000000 in ?? ()

Thread 3 (Thread 0x7f89c5e1c700 (LWP 1788)):
#0  0x00007f89eaf591d3 in select () from /lib/libc.so.6
#1  0x00007f89ec52b131 in ?? () from /usr/lib/libQtCore.so.4
#2  0x00007f89ec44fc1b in ?? () from /usr/lib/libQtCore.so.4
#3  0x00007f89ec1bedf0 in start_thread () from /lib/libpthread.so.0
#4  0x00007f89eaf5f39d in clone () from /lib/libc.so.6
#5  0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7f89c53e3700 (LWP 1790)):
#0  0x00007f89ec1c2b54 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/libpthread.so.0
#1  0x00007f89df843652 in ?? () from /usr/lib/libQtScript.so.4
#2  0x00007f89df843689 in ?? () from /usr/lib/libQtScript.so.4
#3  0x00007f89ec1bedf0 in start_thread () from /lib/libpthread.so.0
#4  0x00007f89eaf5f39d in clone () from /lib/libc.so.6
#5  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f89ed958760 (LWP 1768)):
[KCrash Handler]
#6  0x0000000000000065 in ?? ()
#7  0x00007f89ec5635a8 in QObject::connect(QObject const*, char const*, QObject const*, char const*, Qt::ConnectionType) () from /usr/lib/libQtCore.so.4
#8  0x00007f89d05da2d8 in SystemTray::Task::widget (this=0x1877c90, host=0x3e2fe90, createIfNecessary=<optimized out>) at /chakra/desktop-unstable/kde-workspace/src/kde-workspace-4.7.97/plasma/generic/applets/systemtray/core/task.cpp:83
#9  0x00007f89d05f50c6 in SystemTray::TaskArea::addWidgetForTask (this=0x3e22030, task=0x1877c90) at /chakra/desktop-unstable/kde-workspace/src/kde-workspace-4.7.97/plasma/generic/applets/systemtray/ui/taskarea.cpp:265
#10 0x00007f89d05f5786 in SystemTray::TaskArea::addTask (this=0x3e22030, task=<optimized out>) at /chakra/desktop-unstable/kde-workspace/src/kde-workspace-4.7.97/plasma/generic/applets/systemtray/ui/taskarea.cpp:196
#11 0x00007f89ec561db1 in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib/libQtCore.so.4
#12 0x00007f89d05d8e22 in SystemTray::Manager::taskChanged (this=<optimized out>, _t1=0x1877c90) at /chakra/desktop-unstable/kde-workspace/src/kde-workspace-4.7.97/plasma/generic/applets/systemtray/manager.moc:120
#13 0x00007f89ec561db1 in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib/libQtCore.so.4
#14 0x00007f89d05d9d1f in SystemTray::Task::changed (this=<optimized out>, _t1=0x1877c90) at /chakra/desktop-unstable/kde-workspace/src/kde-workspace-4.7.97/plasma/generic/applets/systemtray/task.moc:128
#15 0x00007f89ec566f76 in QObject::event(QEvent*) () from /usr/lib/libQtCore.so.4
#16 0x00007f89eb6e33e4 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#17 0x00007f89eb6e8263 in QApplication::notify(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#18 0x00007f89ed3354f6 in KApplication::notify(QObject*, QEvent*) () from /usr/lib/libkdeui.so.5
#19 0x00007f89ec54e02c in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib/libQtCore.so.4
#20 0x00007f89ec5518ca in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () from /usr/lib/libQtCore.so.4
#21 0x00007f89ec57cb23 in ?? () from /usr/lib/libQtCore.so.4
#22 0x00007f89e7f866d3 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#23 0x00007f89e7f86eb0 in ?? () from /usr/lib/libglib-2.0.so.0
#24 0x00007f89e7f8714d in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#25 0x00007f89ec57cf4f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#26 0x00007f89eb78644e in ?? () from /usr/lib/libQtGui.so.4
#27 0x00007f89ec54ce12 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#28 0x00007f89ec54d067 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#29 0x00007f89ec551bc5 in QCoreApplication::exec() () from /usr/lib/libQtCore.so.4
#30 0x00007f89d8a98e23 in kdemain (argc=1, argv=0x1361030) at /chakra/desktop-unstable/kde-workspace/src/kde-workspace-4.7.97/plasma/desktop/shell/main.cpp:120
#31 0x00000000004087df in _start ()

Reported using DrKonqi

Comment 1 S. Burmeister 2012-02-17 20:26:36 UTC

Created attachment 68884 [details]
New crash information added by DrKonqi

plasma-desktop (0.4) on KDE Platform 4.8.00 (4.8.0 "release 462" using Qt 4.8.0

- What I was doing when the application crashed:

The crash ahppens when adding a second panel and removing the first.

-- Backtrace (Reduced):
#7  0xb639cac8 in QObject::connect (sender=0x8c48428, signal=0xab441549 "2destroyed()", receiver=0x8af1d70, method=0xab441538 "1widgetDeleted()", type=Qt::AutoConnection) at kernel/qobject.cpp:2560
#8  0xab41f34b in SystemTray::Task::widget (this=0x8af1d70, host=0x9ad3858, createIfNecessary=true) at /usr/src/debug/kde-workspace-4.8.0/plasma/generic/applets/systemtray/core/task.cpp:83
#9  0xab43dca9 in SystemTray::TaskArea::addWidgetForTask (this=0x9bbe428, task=0x8af1d70) at /usr/src/debug/kde-workspace-4.8.0/plasma/generic/applets/systemtray/ui/taskarea.cpp:265
#10 0xab43e43f in SystemTray::TaskArea::addTask (this=0x9bbe428, task=0x8af1d70) at /usr/src/debug/kde-workspace-4.8.0/plasma/generic/applets/systemtray/ui/taskarea.cpp:196
[...]
#12 0xab41e425 in SystemTray::Manager::taskChanged (this=0x82fc4c0, _t1=0x8af1d70) at /usr/src/debug/kde-workspace-4.8.0/build/plasma/generic/applets/systemtray/manager.moc:120

Comment 2 diego 2012-03-07 21:32:27 UTC

plasma desktop crashed while removing an additional top panel that appeared after updating 
distro is mageia cauldron

Application: Plasma-Desktop-Umgebung (kdeinit4), signal: Segmentation fault
Using host libthread_db library "/lib/i686/libthread_db.so.1".
[Current thread is 1 (Thread 0xb539c6e0 (LWP 4330))]

Thread 3 (Thread 0xaa4eeb70 (LWP 4334)):
#0  0xffffe424 in __kernel_vsyscall ()
#1  0xb6c2025b in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/i686/libpthread.so.0
#2  0xb2ce67f9 in QTWTF::TCMalloc_PageHeap::scavengerThread (this=0xb2de67a0) at ../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:2359
#3  0xb2ce683f in QTWTF::TCMalloc_PageHeap::runScavengerThread (context=0xb2de67a0) at ../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:1464
#4  0xb6c1ca37 in start_thread () from /lib/i686/libpthread.so.0
#5  0xb5fbb98e in clone () from /lib/i686/libc.so.6
Backtrace stopped: Not enough registers or memory available to unwind further

Thread 2 (Thread 0xa9224b70 (LWP 4335)):
#0  0xb59c7d90 in ?? () from /lib/libglib-2.0.so.0
#1  0xb59c80c8 in g_mutex_unlock () from /lib/libglib-2.0.so.0
#2  0xb59885ad in g_main_context_prepare () from /lib/libglib-2.0.so.0
#3  0xb5988ddf in ?? () from /lib/libglib-2.0.so.0
#4  0xb5989031 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#5  0xb6ddeaf7 in QEventDispatcherGlib::processEvents (this=0xa8900468, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#6  0xb6daaccd in QEventLoop::processEvents (this=0xa92242d0, flags=...) at kernel/qeventloop.cpp:149
#7  0xb6daaf69 in QEventLoop::exec (this=0xa92242d0, flags=...) at kernel/qeventloop.cpp:204
#8  0xb6c956dc in QThread::exec (this=0xa908d40) at thread/qthread.cpp:501
#9  0xb6d881dd in QInotifyFileSystemWatcherEngine::run (this=0xa908d40) at io/qfilesystemwatcher_inotify.cpp:248
#10 0xb6c98bc0 in QThreadPrivate::start (arg=0xa908d40) at thread/qthread_unix.cpp:298
#11 0xb6c1ca37 in start_thread () from /lib/i686/libpthread.so.0
#12 0xb5fbb98e in clone () from /lib/i686/libc.so.6
Backtrace stopped: Not enough registers or memory available to unwind further

Thread 1 (Thread 0xb539c6e0 (LWP 4330)):
[KCrash Handler]
#7  0x642f7364 in ?? ()
#8  0xb6dc4178 in QObject::connect (sender=0xb1ce048, signal=0xafeeee49 "2destroyed()", receiver=0xb159228, method=0xafeeee38 "1widgetDeleted()", type=Qt::AutoConnection) at kernel/qobject.cpp:2551
#9  0xafeccd4b in SystemTray::Task::widget (this=0xb159228, host=0xa4dbc98, createIfNecessary=true) at /usr/src/debug/kde-workspace-4.8.1/plasma/generic/applets/systemtray/core/task.cpp:83
#10 0xafeeb5a9 in SystemTray::TaskArea::addWidgetForTask (this=0xa527058, task=0xb159228) at /usr/src/debug/kde-workspace-4.8.1/plasma/generic/applets/systemtray/ui/taskarea.cpp:265
#11 0xafeebd3f in SystemTray::TaskArea::addTask (this=0xa527058, task=0xb159228) at /usr/src/debug/kde-workspace-4.8.1/plasma/generic/applets/systemtray/ui/taskarea.cpp:196
#12 0xb6dc27af in QMetaObject::activate (sender=0xa3a60b8, m=0xafef8ff8, local_signal_index=1, argv=0xbfb1bb68) at kernel/qobject.cpp:3547
#13 0xafecbec5 in SystemTray::Manager::taskChanged (this=0xa3a60b8, _t1=0xb159228) at /usr/src/debug/kde-workspace-4.8.1/build/plasma/generic/applets/systemtray/manager.moc:120
#14 0xb6dc27af in QMetaObject::activate (sender=0xb159228, m=0xafef90d0, local_signal_index=0, argv=0xbfb1bc48) at kernel/qobject.cpp:3547
#15 0xafecd405 in SystemTray::Task::changed (this=0xb159228, _t1=0xb159228) at /usr/src/debug/kde-workspace-4.8.1/build/plasma/generic/applets/systemtray/task.moc:128
#16 0xafecd453 in SystemTray::Task::emitChanged (this=0xb159228) at /usr/src/debug/kde-workspace-4.8.1/plasma/generic/applets/systemtray/core/task.cpp:144
#17 0xb6dbdce1 in QMetaCallEvent::placeMetaCall (this=0xaa103d8, object=0xb159228) at kernel/qobject.cpp:525
#18 0xb6dc6e3b in QObject::event (this=0xb159228, e=0xaa103d8) at kernel/qobject.cpp:1195
#19 0xb6283b04 in notify_helper (e=0xaa103d8, receiver=0xb159228, this=0x9fcaa18) at kernel/qapplication.cpp:4550
#20 QApplicationPrivate::notify_helper (this=0x9fcaa18, receiver=0xb159228, e=0xaa103d8) at kernel/qapplication.cpp:4522
#21 0xb6288f13 in QApplication::notify (this=0xaa103d8, receiver=0xb159228, e=0xaa103d8) at kernel/qapplication.cpp:4279
#22 0xb7425a81 in KApplication::notify (this=0x9fb5300, receiver=0xb159228, event=0xaa103d8) at /usr/src/debug/kdelibs-4.8.1/kdeui/kernel/kapplication.cpp:311
#23 0xb6dac15e in QCoreApplication::notifyInternal (this=0x9fb5300, receiver=0xb159228, event=0xaa103d8) at kernel/qcoreapplication.cpp:876
#24 0xb6dafd88 in sendEvent (event=<optimized out>, receiver=<optimized out>) at kernel/qcoreapplication.h:231
#25 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x9f31a40) at kernel/qcoreapplication.cpp:1500
#26 0xb6db00bc in QCoreApplication::sendPostedEvents (receiver=0x0, event_type=0) at kernel/qcoreapplication.cpp:1393
#27 0xb6dde6a4 in sendPostedEvents () at kernel/qcoreapplication.h:236
#28 postEventSourceDispatch (s=0x9fccb80) at kernel/qeventdispatcher_glib.cpp:279
#29 0xb5988b4a in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#30 0xb5988f55 in ?? () from /lib/libglib-2.0.so.0
#31 0xb5989031 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#32 0xb6ddea97 in QEventDispatcherGlib::processEvents (this=0x9fc7600, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#33 0xb63372aa in QGuiEventDispatcherGlib::processEvents (this=0x9fc7600, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#34 0xb6daaccd in QEventLoop::processEvents (this=0xbfb1c3c4, flags=...) at kernel/qeventloop.cpp:149
#35 0xb6daaf69 in QEventLoop::exec (this=0xbfb1c3c4, flags=...) at kernel/qeventloop.cpp:204
#36 0xb6db016a in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1148
#37 0xb6281974 in QApplication::exec () at kernel/qapplication.cpp:3811
#38 0xb16d6b1b in kdemain (argc=1, argv=0x9f7a690) at /usr/src/debug/kde-workspace-4.8.1/plasma/desktop/shell/main.cpp:120
#39 0x0804f944 in launch (argc=1, _name=0x9f7a70c "/usr/bin/plasma-desktop", args=<optimized out>, cwd=0x0, envc=0, envs=<optimized out>, reset_env=false, tty=0x0, avoid_loops=false, startup_id_str=0x8051ec3 "0") at /usr/src/debug/kdelibs-4.8.1/kinit/kinit.cpp:734
#40 0x080509fc in handle_launcher_request (sock=<optimized out>, who=<optimized out>) at /usr/src/debug/kdelibs-4.8.1/kinit/kinit.cpp:1226
#41 0x08050f1f in handle_requests (waitForPid=<optimized out>) at /usr/src/debug/kdelibs-4.8.1/kinit/kinit.cpp:1419
#42 0x0804c0f8 in main (argc=187800864, argv=0xac03d98, envp=0xb6c052a8) at /usr/src/debug/kdelibs-4.8.1/kinit/kinit.cpp:1907

Comment 3 techphreek 2012-03-19 06:09:05 UTC

Created attachment 69726 [details]
New crash information added by DrKonqi

plasma-desktop (0.4) on KDE Platform 4.8.1 (4.8.1) using Qt 4.8.0

- What I was doing when the application crashed:

Closed the default panel while another panel was open at the same time. Only the KDE Launcher, System Tray and Digital Clock were on the panel.

-- Backtrace (Reduced):
#7  0x000000379d38e528 in QObject::connect (sender=0x5ebd110, signal=0x7ffccfbc2178 "2destroyed()", receiver=0x5e98b60, method=0x7ffccfbc2167 "1widgetDeleted()", type=Qt::AutoConnection) at kernel/qobject.cpp:2551
#8  0x00007ffccfba3e48 in SystemTray::Task::widget (this=0x5e98b60, host=0x3d77030, createIfNecessary=<optimized out>) at /usr/src/debug/kde-workspace-4.8.1/plasma/generic/applets/systemtray/core/task.cpp:83
#9  0x00007ffccfbbe926 in SystemTray::TaskArea::addWidgetForTask (this=0x2175330, task=0x5e98b60) at /usr/src/debug/kde-workspace-4.8.1/plasma/generic/applets/systemtray/ui/taskarea.cpp:265
#10 0x00007ffccfbbefe6 in SystemTray::TaskArea::addTask (this=0x2175330, task=<optimized out>) at /usr/src/debug/kde-workspace-4.8.1/plasma/generic/applets/systemtray/ui/taskarea.cpp:196
[...]
#12 0x00007ffccfba2a42 in SystemTray::Manager::taskChanged (this=<optimized out>, _t1=0x5e98b60) at /usr/src/debug/kde-workspace-4.8.1/x86_64-redhat-linux-gnu/plasma/generic/applets/systemtray/manager.moc:120

Comment 4 Jekyll Wu 2012-04-29 22:54:33 UTC

*** Bug 299063 has been marked as a duplicate of this bug. ***

Comment 5 Sorin Sbarnea 2012-05-03 12:11:55 UTC

Created attachment 70827 [details]
New crash information added by DrKonqi

plasma-desktop (0.4) on KDE Platform 4.8.2 (4.8.2) using Qt 4.8.1

- What I was doing when the application crashed:
Removed panel. I already have two taskbars.

-- Backtrace (Reduced):
#7  0x00007f73a2f08a78 in QObject::connect (sender=0x1e1c700, signal=0x7f738848a478 "2destroyed()", receiver=0x3420d60, method=0x7f738848a467 "1widgetDeleted()", type=Qt::AutoConnection) at kernel/qobject.cpp:2551
#8  0x00007f738846be68 in SystemTray::Task::widget (this=0x3420d60, host=0x1b10dd0, createIfNecessary=<optimized out>) at ../../../../../plasma/generic/applets/systemtray/core/task.cpp:83
#9  0x00007f7388486c66 in SystemTray::TaskArea::addWidgetForTask (this=0x1b50770, task=0x3420d60) at ../../../../../plasma/generic/applets/systemtray/ui/taskarea.cpp:265
#10 0x00007f7388487326 in SystemTray::TaskArea::addTask (this=0x1b50770, task=<optimized out>) at ../../../../../plasma/generic/applets/systemtray/ui/taskarea.cpp:196
[...]
#12 0x00007f738846a9b2 in SystemTray::Manager::taskChanged (this=<optimized out>, _t1=0x3420d60) at ./manager.moc:120

Comment 6 ckascha78 2012-05-20 16:07:40 UTC

Created attachment 71248 [details]
New crash information added by DrKonqi

plasma-desktop (0.4) on KDE Platform 4.8.2 (4.8.2) using Qt 4.8.1

- What I was doing when the application crashed:

I created a 2nd panel on top and deleted the panel at the bottom.

-- Backtrace (Reduced):
#8  0xb6401fb0 in QObject::connect (sender=0x9c7cd58, signal=0xad350fa9 "2destroyed()", receiver=0x9cf4258, method=0xad350f98 "1widgetDeleted()", type=Qt::AutoConnection) at kernel/qobject.cpp:2551
#9  0xad32edab in SystemTray::Task::widget (this=0x9cf4258, host=0xb10cbd8, createIfNecessary=true) at ../../../../../plasma/generic/applets/systemtray/core/task.cpp:83
#10 0xad34d709 in SystemTray::TaskArea::addWidgetForTask (this=0xa4e81c0, task=0x9cf4258) at ../../../../../plasma/generic/applets/systemtray/ui/taskarea.cpp:265
#11 0xad34de9f in SystemTray::TaskArea::addTask (this=0xa4e81c0, task=0x9cf4258) at ../../../../../plasma/generic/applets/systemtray/ui/taskarea.cpp:196
[...]
#13 0xad32de85 in SystemTray::Manager::taskChanged (this=0x8bd93c8, _t1=0x9cf4258) at ./manager.moc:120

Comment 7 Myriam Schweingruber 2012-05-20 20:58:47 UTC

Confirmed by duplicates.

Comment 8 Jekyll Wu 2012-05-26 22:08:58 UTC

*** Bug 300024 has been marked as a duplicate of this bug. ***

Comment 9 Jekyll Wu 2012-05-26 22:09:18 UTC

*** Bug 300680 has been marked as a duplicate of this bug. ***

Comment 10 Anne-Marie Mahfouf 2012-05-29 07:57:56 UTC

*** Bug 300794 has been marked as a duplicate of this bug. ***

Comment 11 Vorador 2012-06-02 19:32:24 UTC

Created attachment 71521 [details]
New crash information added by DrKonqi

plasma-desktop (0.4) on KDE Platform 4.8.3 (4.8.3) using Qt 4.8.1

- What I was doing when the application crashed:
Actually, I have removed the task manager by accident, then i was trying to return it back on the ẗask bar¨. In the end I had opened new Deafult panel and i tried to move it to the down edge of the screen. Then the crash occured.

-- Backtrace (Reduced):
#8  0x4dda6410 in QObject::connect (sender=0xa1805e0, signal=0x79f4818 "2destroyed()", receiver=0xa169ec8, method=0x79f4807 "1widgetDeleted()", type=Qt::AutoConnection) at kernel/qobject.cpp:2551
#9  0x079d28a2 in SystemTray::Task::widget (this=0xa169ec8, host=0xab7e2e0, createIfNecessary=true) at /usr/src/debug/kde-workspace-4.8.3/plasma/generic/applets/systemtray/core/task.cpp:83
#10 0x079f0d40 in SystemTray::TaskArea::addWidgetForTask (this=0xa71dcb0, task=0xa169ec8) at /usr/src/debug/kde-workspace-4.8.3/plasma/generic/applets/systemtray/ui/taskarea.cpp:265
#11 0x079f1550 in SystemTray::TaskArea::addTask (this=0xa71dcb0, task=0xa169ec8) at /usr/src/debug/kde-workspace-4.8.3/plasma/generic/applets/systemtray/ui/taskarea.cpp:196
[...]
#13 0x079d0fa6 in SystemTray::Manager::taskChanged (this=0x97cbb60, _t1=0xa169ec8) at /usr/src/debug/kde-workspace-4.8.3/i686-redhat-linux-gnu/plasma/generic/applets/systemtray/manager.moc:119

Comment 12 Thijs 2012-06-12 22:17:21 UTC

*** Bug 301768 has been marked as a duplicate of this bug. ***

Comment 13 Myriam Schweingruber 2012-07-17 10:34:49 UTC

*** Bug 274111 has been marked as a duplicate of this bug. ***

Comment 14 Myriam Schweingruber 2012-07-17 10:36:26 UTC

*** Bug 302501 has been marked as a duplicate of this bug. ***

Comment 15 Jekyll Wu 2012-07-25 23:39:36 UTC

*** Bug 304060 has been marked as a duplicate of this bug. ***

Comment 16 Jekyll Wu 2012-08-12 11:14:06 UTC

*** Bug 305012 has been marked as a duplicate of this bug. ***

Comment 17 Jekyll Wu 2012-08-12 11:14:24 UTC

*** Bug 304637 has been marked as a duplicate of this bug. ***

Comment 18 Jekyll Wu 2012-09-01 11:04:31 UTC

*** Bug 306117 has been marked as a duplicate of this bug. ***

Comment 19 Christian 2012-09-08 19:00:52 UTC

Created attachment 73751 [details]
New crash information added by DrKonqi

plasma-desktop (0.4) on KDE Platform 4.8.5 (4.8.5) using Qt 4.8.2

I did exactly as described in Comment #12. The bug is still present in version 4.8.5.

-- Backtrace (Reduced):
#7  0x00007fb2d210e878 in QObject::connect (sender=0x781d940, signal=0x7fb2aec82f49 "2destroyed()", receiver=0x8b870e0, method=0x7fb2aec82f38 "1widgetDeleted()", type=Qt::AutoConnection) at kernel/qobject.cpp:2551
#8  0x00007fb2aec647d5 in SystemTray::Task::widget (this=0x8b870e0, host=0x82f5fa0, createIfNecessary=<optimized out>) at /tmp/portage/kde-base/plasma-workspace-4.8.5/work/plasma-workspace-4.8.5/plasma/generic/applets/systemtray/core/task.cpp:83
#9  0x00007fb2aec7f8a4 in SystemTray::TaskArea::addWidgetForTask (this=0x82f75f0, task=0x8b870e0) at /tmp/portage/kde-base/plasma-workspace-4.8.5/work/plasma-workspace-4.8.5/plasma/generic/applets/systemtray/ui/taskarea.cpp:265
#10 0x00007fb2aec7feee in SystemTray::TaskArea::addTask (this=0x82f75f0, task=<optimized out>) at /tmp/portage/kde-base/plasma-workspace-4.8.5/work/plasma-workspace-4.8.5/plasma/generic/applets/systemtray/ui/taskarea.cpp:196
[...]
#12 0x00007fb2aec636b2 in SystemTray::Manager::taskChanged (this=<optimized out>, _t1=0x8b870e0) at /tmp/portage/kde-base/plasma-workspace-4.8.5/work/plasma-workspace-4.8.5_build/plasma/generic/applets/systemtray/manager.moc:120

Comment 20 Myriam Schweingruber 2012-09-11 14:26:20 UTC

*** Bug 306586 has been marked as a duplicate of this bug. ***

Comment 21 Jekyll Wu 2012-10-29 00:17:39 UTC

*** Bug 309177 has been marked as a duplicate of this bug. ***

Comment 22 Myriam Schweingruber 2012-11-04 20:39:07 UTC

Is this still reproducible with KDE 4.9.2 or newer?

Comment 23 Monika Eggers 2012-11-04 22:43:24 UTC

I was not able to reproduce it anymore in KDE 4.9.2

Comment 24 Steven Sroka 2012-11-04 23:18:16 UTC

Same here. The crash no longer occurs.

Comment 25 Soheb 2012-11-24 12:17:04 UTC

Created attachment 75441 [details]
New crash information added by DrKonqi

plasma-desktop (0.4) on KDE Platform 4.8.5 (4.8.5) using Qt 4.8.1

- What I was doing when the application crashed:
Removing the panel

- Unusual behavior I noticed:
There seemed to be a panel beneath the panel I was removing, but upon trying to delete, it crashed the system. Trying to move the panel infront of the other panel did not seperate the panel behind, and the back panel just moved along with the new panel wherever I moved it.

-- Backtrace (Reduced):
#7  0x00007f3775936a78 in QObject::connect (sender=0x2205740, signal=0x7f3759794478 "2destroyed()", receiver=0x2f1bc70, method=0x7f3759794467 "1widgetDeleted()", type=Qt::AutoConnection) at kernel/qobject.cpp:2551
#8  0x00007f3759775e68 in SystemTray::Task::widget (this=0x2f1bc70, host=0x1db52e0, createIfNecessary=<optimized out>) at ../../../../../plasma/generic/applets/systemtray/core/task.cpp:83
#9  0x00007f3759790c66 in SystemTray::TaskArea::addWidgetForTask (this=0x1d6b8f0, task=0x2f1bc70) at ../../../../../plasma/generic/applets/systemtray/ui/taskarea.cpp:265
#10 0x00007f3759791326 in SystemTray::TaskArea::addTask (this=0x1d6b8f0, task=<optimized out>) at ../../../../../plasma/generic/applets/systemtray/ui/taskarea.cpp:196
[...]
#12 0x00007f37597749b2 in SystemTray::Manager::taskChanged (this=<optimized out>, _t1=0x2f1bc70) at ./manager.moc:120

Comment 26 Maarten De Meyer 2012-11-28 18:27:01 UTC

*** Bug 310838 has been marked as a duplicate of this bug. ***

Comment 27 Jekyll Wu 2012-12-04 23:21:16 UTC

*** Bug 311163 has been marked as a duplicate of this bug. ***

Comment 28 Jekyll Wu 2013-01-10 21:58:54 UTC

*** Bug 313045 has been marked as a duplicate of this bug. ***

Comment 29 Marco Martin 2013-01-22 12:50:20 UTC

*** Bug 313400 has been marked as a duplicate of this bug. ***

Comment 30 Martin Flöser 2013-01-27 18:05:41 UTC

*** Bug 313952 has been marked as a duplicate of this bug. ***

Comment 31 Martin Flöser 2013-01-27 18:06:41 UTC

reopening due to duplicates on 4.9.4 and 4.9.5

Comment 32 Ian Andres 2013-01-31 05:56:38 UTC

Created attachment 76832 [details]
New crash information added by DrKonqi

plasma-desktop (0.4) on KDE Platform 4.9.4 using Qt 4.8.3

- What I was doing when the application crashed:

- Custom settings of the application:


What I was doing:
	I first removed the task manager from the first main panel. I then used the "Desktop" 	slider on the right side of the screen by default to add another panel to the top of 		the screen. After that, I then removed the bottom panel entirely. This is when the 		crash happened.

Custom Settings:
	I have used nothing but the defeault provided i nthe Kubuntu Plasma Desktop 		package. I have installed this package over a Ubuntu 12.10 installation on this 		hardware.

-- Backtrace (Reduced):
#7  0x00007f9e98374bda in QObject::connect (sender=0x35e91c0, signal=0x7f9e724c7a29 "2destroyed()", receiver=0x182d1b0, method=0x7f9e724c7a18 "1widgetDeleted()", type=Qt::AutoConnection) at kernel/qobject.cpp:2551
#8  0x00007f9e724aa908 in SystemTray::Task::widget (this=0x182d1b0, host=0x400d8b0, createIfNecessary=<optimized out>) at ../../../../../plasma/generic/applets/systemtray/core/task.cpp:83
#9  0x00007f9e724c4556 in SystemTray::TaskArea::addWidgetForTask (this=this@entry=0x4012310, task=0x182d1b0) at ../../../../../plasma/generic/applets/systemtray/ui/taskarea.cpp:270
#10 0x00007f9e724c4c46 in SystemTray::TaskArea::addTask (this=0x4012310, task=<optimized out>) at ../../../../../plasma/generic/applets/systemtray/ui/taskarea.cpp:196
[...]
#12 0x00007f9e724a9a62 in SystemTray::Manager::taskChanged (this=<optimized out>, _t1=0x182d1b0) at ./manager.moc:120

Comment 33 Aleksander 2013-03-09 20:34:57 UTC

Created attachment 77893 [details]
New crash information added by DrKonqi

plasma-desktop (0.4) on KDE Platform 4.9.5 using Qt 4.8.3

- What I was doing when the application crashed:

I launched a new standard panel at the top of the screen. Then I closed the panel at the bottom of the screen. An error message appears. It happens sometimes.

-- Backtrace (Reduced):
#7  0x00007ffbab37ebda in QObject::connect (sender=0x2e8d590, signal=0x7ffb93266a29 "2destroyed()", receiver=0x26e8590, method=0x7ffb93266a18 "1widgetDeleted()", type=Qt::AutoConnection) at kernel/qobject.cpp:2551
#8  0x00007ffb93249908 in SystemTray::Task::widget (this=0x26e8590, host=0x3c791e0, createIfNecessary=<optimized out>) at ../../../../../plasma/generic/applets/systemtray/core/task.cpp:83
#9  0x00007ffb93263556 in SystemTray::TaskArea::addWidgetForTask (this=this@entry=0x34cb790, task=0x26e8590) at ../../../../../plasma/generic/applets/systemtray/ui/taskarea.cpp:270
#10 0x00007ffb93263c46 in SystemTray::TaskArea::addTask (this=0x34cb790, task=<optimized out>) at ../../../../../plasma/generic/applets/systemtray/ui/taskarea.cpp:196
[...]
#12 0x00007ffb93248a62 in SystemTray::Manager::taskChanged (this=<optimized out>, _t1=0x26e8590) at ./manager.moc:120

Comment 34 Alistair Buxton 2013-03-09 23:35:16 UTC

Got this crash when removing the system tray from the first panel, not the panel itself.

Comment 35 Jekyll Wu 2013-03-15 12:17:36 UTC

*** Bug 316771 has been marked as a duplicate of this bug. ***

Comment 36 TraceyC 2013-03-27 19:46:04 UTC

Created attachment 78431 [details]
New crash information added by DrKonqi

plasma-desktop (0.4) on KDE Platform 4.9.5 using Qt 4.8.3

- What I was doing when the application crashed:

KDE 4.9.5-0ubuntu0.1

I had been in the settings of one of my two task bars on the secondary display. 
I clicked the close button on the system tray.
The screens went black
KDE reloaded & presented me with the crash report

-- Backtrace (Reduced):
#7  0x00007f613055cbda in QObject::connect (sender=0x41d0070, signal=0x7f6114243a29 "2destroyed()", receiver=0x9fc1b50, method=0x7f6114243a18 "1widgetDeleted()", type=Qt::AutoConnection) at kernel/qobject.cpp:2551
#8  0x00007f6114226908 in SystemTray::Task::widget (this=0x9fc1b50, host=0x1eb36e0, createIfNecessary=<optimized out>) at ../../../../../plasma/generic/applets/systemtray/core/task.cpp:83
#9  0x00007f6114240556 in SystemTray::TaskArea::addWidgetForTask (this=this@entry=0x1eb0c50, task=0x9fc1b50) at ../../../../../plasma/generic/applets/systemtray/ui/taskarea.cpp:270
#10 0x00007f6114240c46 in SystemTray::TaskArea::addTask (this=0x1eb0c50, task=<optimized out>) at ../../../../../plasma/generic/applets/systemtray/ui/taskarea.cpp:196
[...]
#12 0x00007f6114225a62 in SystemTray::Manager::taskChanged (this=<optimized out>, _t1=0x9fc1b50) at ./manager.moc:120

Comment 37 Jekyll Wu 2013-04-05 01:57:46 UTC

*** Bug 317855 has been marked as a duplicate of this bug. ***

Comment 38 Jekyll Wu 2013-04-13 08:29:15 UTC

*** Bug 318277 has been marked as a duplicate of this bug. ***

Comment 39 Jekyll Wu 2013-04-17 09:18:22 UTC

*** Bug 318478 has been marked as a duplicate of this bug. ***

Comment 40 Jekyll Wu 2013-05-06 04:57:15 UTC

*** Bug 319392 has been marked as a duplicate of this bug. ***

Comment 41 Dominik Haumann 2013-08-30 22:07:05 UTC

*** Bug 312924 has been marked as a duplicate of this bug. ***

Comment 42 Bharat Gourab Das 2014-04-30 21:06:20 UTC

Created attachment 86381 [details]
New crash information added by DrKonqi

plasma-desktop (0.4) on KDE Platform 4.8.5 (4.8.5) using Qt 4.8.1

- What I was doing when the application crashed:
1-Using dual monitor(laptop + TV)-
2-Changed resolution of TV-
3-One panel which was on TV came to laptop after changing resolution-
4-When I deleted that panel- desktop crashed

-- Backtrace (Reduced):
#7  0x00007fd28ce17a78 in QObject::connect (sender=0x35a5770, signal=0x7fd2745f3478 "2destroyed()", receiver=0x32ae2e0, method=0x7fd2745f3467 "1widgetDeleted()", type=Qt::AutoConnection) at kernel/qobject.cpp:2551
#8  0x00007fd2745d4e68 in SystemTray::Task::widget (this=0x32ae2e0, host=0x21f8fa0, createIfNecessary=<optimized out>) at ../../../../../plasma/generic/applets/systemtray/core/task.cpp:83
#9  0x00007fd2745efc66 in SystemTray::TaskArea::addWidgetForTask (this=0x217d620, task=0x32ae2e0) at ../../../../../plasma/generic/applets/systemtray/ui/taskarea.cpp:265
#10 0x00007fd2745f0326 in SystemTray::TaskArea::addTask (this=0x217d620, task=<optimized out>) at ../../../../../plasma/generic/applets/systemtray/ui/taskarea.cpp:196
[...]
#12 0x00007fd2745d39b2 in SystemTray::Manager::taskChanged (this=<optimized out>, _t1=0x32ae2e0) at ./manager.moc:120

Comment 43 Christoph Feck 2014-07-29 09:25:14 UTC

*** Bug 337874 has been marked as a duplicate of this bug. ***

Comment 44 Nate Graham 2018-06-08 19:03:32 UTC

Hello!

This bug report was filed for KDE Plasma 4, which reached end-of-support status in August 2015. KDE Plasma 5's desktop shell has been almost completely rewritten for better performance and usability, so it is likely that this bug is already resolved in Plasma 5.

Accordingly, we hope you understand why we must close this bug report. If the issue described  here is still present in KDE Plasma 5.12 or later, please feel free to open a new ticket in the "plasmashell" product after reading https://community.kde.org/Get_Involved/Bug_Reporting

If you would like to get involved in KDE's bug triaging effort so that future mass bug closes like this are less likely, please read https://community.kde.org/Get_Involved#Bug_Triaging

Thanks for your understanding!

Nate Graham