I confirm. If i put new plasmoids on the desktop, after logout and that crash they are gone. Kubuntu 8.04.1 KDE 4.0.98

*** Bug 166982 has been marked as a duplicate of this bug. ***

*** Bug 167143 has been marked as a duplicate of this bug. ***

Dito Same under FreeBSD 

*** This bug has been confirmed by popular vote. ***

same problem on kde 4.1 (debian experimental) 

AFAICS plasma crash when you play with plasmoids after you click logout.

Application: Plasma Workspace (plasma), signal SIGSEGV
[Thread debugging using libthread_db enabled]
[New Thread 0x7f69a5e98780 (LWP 8122)]
[New Thread 0x42433950 (LWP 8128)]
[KCrash handler]
#5  0x0000000000000000 in ?? ()
#6  0x00007f69a4177929 in QGraphicsWidget::event (this=0x1ed73f0,
    event=0x7fffae05e3c0) at graphicsview/qgraphicswidget.cpp:1153
#7  0x00007f69a3c23e5d in QApplicationPrivate::notify_helper (this=0x1c8c130,
    receiver=0x1ed73f0, e=0x7fffae05e3c0) at kernel/qapplication.cpp:3772
#8  0x00007f69a3c2bb2a in QApplication::notify (this=0x1c83bc0,
    receiver=0x1ed73f0, e=0x7fffae05e3c0) at kernel/qapplication.cpp:3739
#9  0x00007f69a5127bfb in KApplication::notify (this=0x1c83bc0,
    receiver=0x1ed73f0, event=0x7fffae05e3c0)
    at /tmp/buildd/kde4libs-4.1.0/kdeui/kernel/kapplication.cpp:311
#10 0x00007f69a3504411 in QCoreApplication::notifyInternal (this=0x1c83bc0,
    receiver=0x1ed73f0, event=0x7fffae05e3c0)
    at kernel/qcoreapplication.cpp:587
#11 0x00007f69a4177cc7 in QGraphicsWidget::sceneEvent (this=0x1ed73f0,
    event=0x7fffae05e3c0)
    at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#12 0x00007f69a415661d in QGraphicsScene::setFocusItem (this=0x0, item=0x0,
    focusReason=Qt::OtherFocusReason) at graphicsview/qgraphicsscene.cpp:2634
#13 0x00007f69a4176a88 in ~QGraphicsWidget (this=0x1ed73f0)
    at graphicsview/qgraphicswidget.cpp:218
#14 0x00007f699886c615 in ~LauncherApplet (this=0x1ed73f0)
    at
/tmp/buildd/kdebase-workspace-4.1.0/plasma/applets/kickoff/applet/applet.cpp:91
#15 0x00007f69a55c51ae in ~Containment (this=0x1ecec60)
    at /usr/include/qt4/QtCore/qalgorithms.h:352
#16 0x00007f6998a84609 in ~Panel (this=0x1fcc620)
    at
/tmp/buildd/kdebase-workspace-4.1.0/plasma/containments/panel/panel.cpp:75
#17 0x00007f69a55ced3e in ~Corona (this=0x1d21240)
    at /usr/include/qt4/QtCore/qalgorithms.h:352
#18 0x00007f69a5c27bc7 in ~DesktopCorona (this=0x1fcc620)
    at /tmp/buildd/kdebase-workspace-4.1.0/plasma/plasma/desktopcorona.h:36
#19 0x00007f69a5c35466 in PlasmaApp::cleanup (this=0x1c83bc0)
    at /tmp/buildd/kdebase-workspace-4.1.0/plasma/plasma/plasmaapp.cpp:257
#20 0x00007f69a5c37f80 in PlasmaApp::qt_metacall (this=0x1c83bc0,
    _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>,
    _a=0x7fffae05e780)
    at
/tmp/buildd/kdebase-workspace-4.1.0/obj-x86_64-linux-gnu/plasma/plasma/plasmaapp.moc:79
#21 0x00007f69a3518764 in QMetaObject::activate (sender=0x1c83bc0,
    from_signal_index=<value optimized out>, to_signal_index=4,
    argv=0x7f69a37eb780) at kernel/qobject.cpp:3010
#22 0x00007f69a350539d in QCoreApplication::exec ()
    at kernel/qcoreapplication.cpp:849
#23 0x00007f69a5c2b3c3 in kdemain (argc=1, argv=0x7fffae05eb48)
    at /tmp/buildd/kdebase-workspace-4.1.0/plasma/plasma/main.cpp:54
#24 0x00007f69a58da1a6 in __libc_start_main () from /lib/libc.so.6
#25 0x0000000000400629 in _start ()
#0  0x00007f69a595a0e1 in nanosleep () from /lib/libc.so.6

I observe the same bug. It happens not only on logout, but can whenever plasma exists. For example, 'kquitapp plasma' also causes it to crash.

I had the same problems (kde 4.1.0 / Kubuntu Hardy) and they were fixed by editing of the kdmrc file. Where that file exists varies from distro to distro, I have it as /etc/kde4/kdm/kdmrc.

Check that the following exists in kdmrc, if not, add it.


[X-*-Core]
TerminateServer=true


That should correct the crash on logout.

If it *still* hangs after logout, check that the PID file as specified in kdmrc is the same as the one found on your system. I know that in Hardy the default kdmrc has it listed as:


[General]                                                 
PidFile=/var/run/kdm-kde4.pid 


...which is incorrect. The correct line should be:


[General]                                                 
PidFile=/var/run/kdm.pid


Best way to check is to look for this file *while* running kde4.


Could the devs check that these lines are correct in SVN? If it's correct in SVN (meaning correct after installation!) then it's over to the package maintainers.

for Version 4.1.1 (KDE4.1.0(4.1>=20080722)) "release 40.1
as well
opensuse 11.0 on x86_64

Application: Plasma Workspace (plasma), signal SIGSEGV
[?1034h(no debugging symbols found)
(no debugging symbols found)
...
[Thread debugging using libthread_db enabled]
[New Thread 0x7fcb853c2700 (LWP 3506)]
[New Thread 0x429f7950 (LWP 3509)]
[New Thread 0x421f6950 (LWP 3508)]
(no debugging symbols found)
...
#5  0x00000000007184d0 in ?? ()
#6  0x00007fcb7efa43a9 in QGraphicsWidget::event ()
   from /usr/lib64/libQtGui.so.4
#7  0x00007fcb7eaca92d in QApplicationPrivate::notify_helper ()
   from /usr/lib64/libQtGui.so.4
#8  0x00007fcb7ead0cfa in QApplication::notify () from /usr/lib64/libQtGui.so.4
#9  0x00007fcb83f6aceb in KApplication::notify () from /usr/lib64/libkdeui.so.5
#10 0x00007fcb81bfbe9c in QCoreApplication::notifyInternal ()
   from /usr/lib64/libQtCore.so.4
#11 0x00007fcb7efa4197 in QGraphicsWidget::sceneEvent ()
   from /usr/lib64/libQtGui.so.4
#12 0x00007fcb7ef8760d in QGraphicsScene::setFocusItem ()
   from /usr/lib64/libQtGui.so.4
#13 0x00007fcb7efa2fc7 in QGraphicsWidget::~QGraphicsWidget ()
   from /usr/lib64/libQtGui.so.4
#14 0x00007fcb793689e9 in ?? ()
   from /usr/lib64/kde4/plasma_containment_panel.so
#15 0x00007fcb84ceda9e in Plasma::Corona::~Corona ()
   from /usr/lib64/libplasma.so.2
#16 0x00007fcb84fc9317 in ?? () from /usr/lib64/libkdeinit4_plasma.so
#17 0x00007fcb84fd5c26 in ?? () from /usr/lib64/libkdeinit4_plasma.so
#18 0x00007fcb84fd6c40 in ?? () from /usr/lib64/libkdeinit4_plasma.so
#19 0x00007fcb81c0d4e0 in QMetaObject::activate ()
   from /usr/lib64/libQtCore.so.4
#20 0x00007fcb81bfca44 in QCoreApplication::exec ()
   from /usr/lib64/libQtCore.so.4
#21 0x00007fcb84fcc1f3 in kdemain () from /usr/lib64/libkdeinit4_plasma.so
#22 0x00007fcb7d56a436 in __libc_start_main () from /lib64/libc.so.6
#23 0x00000000004008b9 in _start ()
#0  0x00007fcb7d5ee261 in nanosleep () from /lib64/libc.so.6


(In reply to comment #0)
> Version:            (using KDE 4.0.98)
> Installed from:    Debian testing/unstable Packages
> OS:                Linux
> 
> When I try to logout or shoutdown/restart computer plasma crash 
> 
> 
> 
> Application: Plasma Workspace (plasma), signal SIGSEGV
> [Thread debugging using libthread_db enabled]
> [New Thread 0x7fc8d67087c0 (LWP 3701)]
> [New Thread 0x41b10950 (LWP 3713)]
> [New Thread 0x40f58950 (LWP 3707)]
> [KCrash handler]
> #5  0x0000000001e67610 in ?? ()
> #6  0x00007fc8d4968929 in QGraphicsWidget::event (this=0x1e1e910, 
>     event=0x7fffde84eba0) at graphicsview/qgraphicswidget.cpp:1153
> #7  0x00007fc8d4414e5d in QApplicationPrivate::notify_helper (this=0x1d5e790, 
>     receiver=0x1e1e910, e=0x7fffde84eba0) at kernel/qapplication.cpp:3772
> #8  0x00007fc8d441cb2a in QApplication::notify (this=0x1d54f00, 
>     receiver=0x1e1e910, e=0x7fffde84eba0) at kernel/qapplication.cpp:3739
> #9  0x00007fc8d591f93b in KApplication::notify (this=0x1d54f00, 
>     receiver=0x1e1e910, event=0x7fffde84eba0)
>     at /tmp/buildd/kde4libs-4.0.98/kdeui/kernel/kapplication.cpp:311
> #10 0x00007fc8d3cf5411 in QCoreApplication::notifyInternal (this=0x1d54f00, 
>     receiver=0x1e1e910, event=0x7fffde84eba0)
>     at kernel/qcoreapplication.cpp:587
> #11 0x00007fc8d4968cc7 in QGraphicsWidget::sceneEvent (this=0x1e1e910, 
>     event=0x7fffde84eba0)
>     at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
> #12 0x00007fc8d494761d in QGraphicsScene::setFocusItem (this=0x0, item=0x0, 
>     focusReason=Qt::OtherFocusReason) at graphicsview/qgraphicsscene.cpp:2634
> #13 0x00007fc8d4967a88 in ~QGraphicsWidget (this=0x1e1e910)
>     at graphicsview/qgraphicswidget.cpp:218
> #14 0x00007fc8c8878615 in ~LauncherApplet (this=0x1e1e910)
>     at
> /tmp/buildd/kdebase-workspace-4.0.98/plasma/applets/kickoff/applet/applet.cpp:91
> #15 0x00007fc8d5db2d4e in ~Containment (this=0x1e01b00)
>     at /usr/include/qt4/QtCore/qalgorithms.h:352
> #16 0x00007fc8c8c945d9 in ~Panel (this=0x1e546c0)
>     at
> /tmp/buildd/kdebase-workspace-4.0.98/plasma/containments/panel/panel.cpp:75
> #17 0x00007fc8d5dbe37e in ~Corona (this=0x1dcad90)
>     at /usr/include/qt4/QtCore/qalgorithms.h:352
> #18 0x00007fc8d6417af7 in ~DesktopCorona (this=0x1e546c0)
>     at /tmp/buildd/kdebase-workspace-4.0.98/plasma/plasma/desktopcorona.h:36
> #19 0x00007fc8d64252c6 in PlasmaApp::cleanup (this=0x1d54f00)
>     at /tmp/buildd/kdebase-workspace-4.0.98/plasma/plasma/plasmaapp.cpp:257
> #20 0x00007fc8d6427de0 in PlasmaApp::qt_metacall (this=0x1d54f00, 
>     _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, 
>     _a=0x7fffde84ef60)
>     at
> /tmp/buildd/kdebase-workspace-4.0.98/obj-x86_64-linux-gnu/plasma/plasma/plasmaapp.moc:79
> #21 0x00007fc8d3d09764 in QMetaObject::activate (sender=0x1d54f00, 
>     from_signal_index=<value optimized out>, to_signal_index=4, 
>     argv=0x7fc8d3fdc780) at kernel/qobject.cpp:3010
> #22 0x00007fc8d3cf639d in QCoreApplication::exec ()
>     at kernel/qcoreapplication.cpp:849
> #23 0x00007fc8d641b2f3 in kdemain (argc=1, argv=0x7fffde84f328)
>     at /tmp/buildd/kdebase-workspace-4.0.98/plasma/plasma/main.cpp:54
> #24 0x00007fc8d60c91a6 in __libc_start_main () from /lib/libc.so.6
> #25 0x0000000000400629 in _start ()
> #0  0x00007fc8d61491f1 in nanosleep () from /lib/libc.so.6
> 

(In reply to comment #8)
> I had the same problems (kde 4.1.0 / Kubuntu Hardy) and they were fixed by
> editing of the kdmrc file. Where that file exists varies from distro to distro,
> I have it as /etc/kde4/kdm/kdmrc.
> 
[...]
>
> Could the devs check that these lines are correct in SVN? If it's correct in
> SVN (meaning correct after installation!) then it's over to the package
> maintainers.
> 

Your solution didn't help me but after I upgrade to kde 4.1.1 plasma didn't crash anymore.
For me this problem is fixed.