Bug 198294 - Random Plasma crashes (even on 4.4; related to the System Tray icons) [XVisualIDFromVisual, ..., QWidget::create, SystemTray::X11EmbedContainer::embedSystemTrayClient, SystemTray::FdoGraphicsWidget::setupXEmbedDelegate]
Summary: Random Plasma crashes (even on 4.4; related to the System Tray icons) [XVisua...
Status: RESOLVED FIXED
Alias: None
Product: plasma4
Classification: Unmaintained
Component: widget-systemtray (show other bugs)
Version: unspecified
Platform: Fedora RPMs Linux
: NOR crash
Target Milestone: ---
Assignee: Plasma Bugs List
URL:
Keywords:
: 202839 205871 206247 207782 207930 208856 210393 211516 212792 212928 212981 213125 213203 213292 213373 213494 213820 214044 214105 214117 214120 214468 214991 215233 215244 215276 215302 215449 215839 216166 216519 216847 216949 217221 217706 218189 218341 219273 219616 220034 220170 220176 220514 220743 220745 220760 222530 222855 223354 224667 224958 225021 225265 225308 225341 225411 225422 225541 225775 226026 226036 226755 226914 227436 227999 228053 228369 228557 228734 229301 229511 230519 230527 230726 231492 231850 231879 232071 232445 232794 233535 234132 234365 234413 234666 235060 235086 235180 235429 235791 236467 236575 237149 237166 237407 237985 238504 238564 240369 242053 242247 244193 244508 247082 249408 249801 250460 254067 255461 269679 (view as bug list)
Depends on:
Blocks:
 
Reported: 2009-06-29 16:01 UTC by Alexandre Thieme Reis
Modified: 2011-04-10 18:37 UTC (History)
48 users (show)

See Also:
Latest Commit:
Version Fixed In:
Sentry Crash Report:

Attachments
New crash information added by DrKonqi (5.84 KB, text/plain)
2010-06-19 01:12 UTC, omega 		Details
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Description Alexandre Thieme Reis 2009-06-29 16:01:51 UTC 
Version:           4.2.4 (using KDE 4.2.4)
Compiler:          gcc 4.4.0 
OS:                Linux
Installed from:    Fedora RPMs

Randomly work area crash with this message:

The application "work area" from plasma (plasma) crashed and cause signal 11 (SEGSEGV)

Este backtrace parece não ter utilidade.
Isto provavelmente ocorre porque seus pacotes foram construí­dos de uma maneira na qual não podem criar seus próprios backtraces, ou a pilha foi seriamente corrompida.

Translation:

"This backtrace seems not to have utility.
This probably occurs because its packages had been constructed in a way in which they cannot create its proper backtraces, or the stack seriously was corrupted" ... Excuse my poor english !!!


[Thread debugging using libthread_db enabled]
[New Thread 0xacea2b70 (LWP 3000)]
0x00db0422 in __kernel_vsyscall ()
[Current thread is 1 (Thread 0xb7fdb7a0 (LWP 2999))]

Additional information:

Thread 2 (Thread 0xacea2b70 (LWP 3000)):
#0  0x00db0422 in __kernel_vsyscall ()
#1  0x0073dfa5 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/libpthread.so.0
#2  0x07a89257 in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib/libQtCore.so.4
#3  0x04fcc752 in ?? () from /usr/lib/libQtNetwork.so.4
#4  0x07a8821e in ?? () from /usr/lib/libQtCore.so.4
#5  0x00739935 in start_thread () from /lib/libpthread.so.0
#6  0x0066d82e in clone () from /lib/libc.so.6

Thread 1 (Thread 0xb7fdb7a0 (LWP 2999)):
#0  0x00db0422 in __kernel_vsyscall ()
#1  0x0062d256 in nanosleep () from /lib/libc.so.6
#2  0x0062d071 in sleep () from /lib/libc.so.6
#3  0x02e55eae in ?? () from /usr/lib/libkdeui.so.5
#4  0x02e56aec in KCrash::defaultCrashHandler(int) () from /usr/lib/libkdeui.so.5
#5  <signal handler called>
#6  0x008b78b7 in XVisualIDFromVisual () from /usr/lib/libX11.so.6
#7  0x0240ad8e in ?? () from /usr/lib/libQtGui.so.4
#8  0x0241141e in QWidgetPrivate::create_sys(unsigned long, bool, bool) () from /usr/lib/libQtGui.so.4
#9  0x023d4f9c in QWidget::create(unsigned long, bool, bool) () from /usr/lib/libQtGui.so.4
#10 0x011210de in Plasma::Theme::font(Plasma::Theme::FontRole) const () from /usr/lib/kde4/plasma_applet_systemtray.so
#11 0x0111d8a0 in Plasma::Theme::font(Plasma::Theme::FontRole) const () from /usr/lib/kde4/plasma_applet_systemtray.so
#12 0x0111d97b in Plasma::Theme::font(Plasma::Theme::FontRole) const () from /usr/lib/kde4/plasma_applet_systemtray.so
#13 0x07b8dfc3 in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib/libQtCore.so.4
#14 0x07b8ec12 in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib/libQtCore.so.4
#15 0x07b930b7 in ?? () from /usr/lib/libQtCore.so.4
#16 0x07b931cc in ?? () from /usr/lib/libQtCore.so.4
#17 0x07b8802f in QObject::event(QEvent*) () from /usr/lib/libQtCore.so.4
#18 0x0237e444 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#19 0x02385abe in QApplication::notify(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#20 0x02de93ca in KApplication::notify(QObject*, QEvent*) () from /usr/lib/libkdeui.so.5
#21 0x07b77fdb in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib/libQtCore.so.4
#22 0x07ba535e in ?? () from /usr/lib/libQtCore.so.4
#23 0x07ba2d90 in ?? () from /usr/lib/libQtCore.so.4
#24 0x007bad78 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#25 0x007be310 in ?? () from /lib/libglib-2.0.so.0
#26 0x007be443 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#27 0x07ba2cdc in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#28 0x0241d305 in ?? () from /usr/lib/libQtGui.so.4
#29 0x07b765c9 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#30 0x07b76a12 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#31 0x07b78d6f in QCoreApplication::exec() () from /usr/lib/libQtCore.so.4
#32 0x0237e2c7 in QApplication::exec() () from /usr/lib/libQtGui.so.4
#33 0x032e25e6 in kdemain () from /usr/lib/libkdeinit4_plasma.so
#34 0x080486eb in _start ()

My system:
Fedora core 11 with all updates
kde 4.2.4
Video card: nVidia Corporation G72 [GeForce 7300 LE] (rev a1)
video driver: kmod-nvidia-185.18.14-1.fc11.1.i586
kernel version: 2.6.29.5-191
Comment 1 Dario Andres 2009-06-29 16:45:06 UTC 
Bug 189725 comment 8 seems to have a related backtrace.

- What is your Qt4 version?
Do you remember what were you doing when the application crashed? Do you think you could reproduce the crash at will (or wait for it to happen again?)

If you experience this regularly, may you read http://techbase.kde.org/Development/Tutorials/Debugging/How_to_create_useful_crash_reports and post a complete backtrace here? You may need to install the "kdebase4-workspace-debuginfo" and "libqt4-debuginfo" packages. Thanks
Comment 2 Beat Wolf 2009-06-29 20:22:21 UTC 
I'm pretty certain this is the same bug after the backtrace, but since the other bug report is a little bit a mess with multiple backtraces i don't feel good by marking this as a dup
Comment 3 Aaron J. Seigo 2009-07-05 11:05:46 UTC 
#9  0x023d4f9c in QWidget::create(unsigned long, bool, bool) () from
/usr/lib/libQtGui.so.4
#10 0x011210de in Plasma::Theme::font(Plasma::Theme::FontRole) const () from
/usr/lib/kde4/plasma_applet_systemtray.so

this backtrace doesn't make any sense: there is no call at all to QWidget from Theme::font, which just makes some calls into KConfig.

the Theme object has to be correct as well because it's retrieved right before the call to Theme::font.

there is also only one call to Theme::font in the system tray widget: in the NotificationWidget constructor. so it can't be that it's a call from a deleted or otherwise bad item.

what's really weird is that the backtrace thinks the Theme::font method exists in the system tray widget library? that's also pretty wrong.

so, yes, we need a new backtrace, one with the debug packages installed.
Comment 4 Dario Andres 2009-09-04 14:43:42 UTC 
*** Bug 205871 has been marked as a duplicate of this bug. ***
Comment 5 Dario Andres 2009-09-04 14:47:39 UTC 
New backtrace from bug 206247:

Thread 1 (Thread 0x7f56ada8a860 (LWP 2594)):
[KCrash Handler]
#5  0x00007f56aadd11e0 in XVisualIDFromVisual () from /usr/lib64/libX11.so.6
#6  0x00007f56a959f22f in qt_x11_getX11InfoForWindow (xinfo=0x314f348,
att=<value optimized out>) at kernel/qwidget_x11.cpp:2896
#7  0x00007f56a959f2c0 in qt_x11_getX11InfoForWindow (xinfo=0x0, a=<value
optimized out>) at kernel/qwidget_x11.cpp:400
#8  0x00007f56a95a6b56 in QWidgetPrivate::create_sys (this=0x314f1b0,
window=<value optimized out>, initializeWindow=<value optimized out>,
destroyOldWindow=<value optimized out>)
    at kernel/qwidget_x11.cpp:545
#9  0x00007f56a956d72b in QWidget::create (this=0x1e5e250, window=30307161,
initializeWindow=192, destroyOldWindow=96) at kernel/qwidget.cpp:1253
#10 0x00007f568939ed99 in Plasma::Theme::font(Plasma::Theme::FontRole) const ()
at /usr/src/debug/kdelibs-4.3.0/plasma/theme.cpp:615
#11 0x00007f568939aae8 in Plasma::Theme::font(Plasma::Theme::FontRole) const ()
at /usr/src/debug/kdelibs-4.3.0/plasma/theme.cpp:615
#12 0x00007f568939abc4 in Plasma::Theme::font(Plasma::Theme::FontRole) const ()
at /usr/src/debug/kdelibs-4.3.0/plasma/theme.cpp:615

Code snippet from tags/KDE/4.3.0 :

614-> QFont Theme::font(FontRole role) const
615-> {
    Q_UNUSED(role)
    switch (role) {
    case DesktopFont:
    {
        KConfigGroup cg(KGlobal::config(), "General");
        return cg.readEntry("desktopFont", QFont("Sans Serif", 10));
    }
    break;
    case DefaultFont:
    default:
        return d->generalFont;
        break;
    }
}

Also, it seems the situation is related to suspend and resume. Weird~
Comment 6 Dario Andres 2009-09-04 14:47:59 UTC 
*** Bug 206247 has been marked as a duplicate of this bug. ***
Comment 7 Dario Andres 2009-09-04 14:52:16 UTC 
Mh.. this looks like a distro related thingy: look at bug 206240 it also has the plasma_applet_systemtray.so/Plasma::Theme::font "mismatch". 
The four reports are from Fedora....
Comment 8 dwrunkle 2009-09-07 16:17:22 UTC 
I had a similar crash in Kubuntu Jaunty while filling out a form in Firefox.  Perhaps this can shed some light on the problem.

Application: Plasma Workspace (plasma), signal SIGSEGV
0x00007fc98efaad21 in nanosleep () from /lib/libc.so.6
[Current thread is 0 (LWP 3641)]

Thread 4 (Thread 0x7fc96fd2c950 (LWP 3646)):
#0  0x00007fc98c4932e9 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/libpthread.so.0
#1  0x00007fc98fa8c939 in QWaitCondition::wait () from /usr/lib/libQtCore.so.4
#2  0x00007fc9932484cc in ?? () from /usr/lib/libQtNetwork.so.4
#3  0x00007fc98fa8b952 in ?? () from /usr/lib/libQtCore.so.4
#4  0x00007fc98c48f3ba in start_thread () from /lib/libpthread.so.0
#5  0x00007fc98efe8fcd in clone () from /lib/libc.so.6
#6  0x0000000000000000 in ?? ()

Thread 3 (Thread 0x7fc96ecf6950 (LWP 3647)):
#0  0x00007fc98c4932e9 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/libpthread.so.0
#1  0x00007fc98fa8c939 in QWaitCondition::wait () from /usr/lib/libQtCore.so.4
#2  0x00007fc970a21d4e in ?? () from /usr/lib/kde4/plasma_wallpaper_image.so
#3  0x00007fc98fa8b952 in ?? () from /usr/lib/libQtCore.so.4
#4  0x00007fc98c48f3ba in start_thread () from /lib/libpthread.so.0
#5  0x00007fc98efe8fcd in clone () from /lib/libc.so.6
#6  0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7fc96e4f5950 (LWP 3649)):
#0  0x00007fc98c4932e9 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/libpthread.so.0
#1  0x00007fc98fa8c939 in QWaitCondition::wait () from /usr/lib/libQtCore.so.4
#2  0x00007fc970a21d4e in ?? () from /usr/lib/kde4/plasma_wallpaper_image.so
#3  0x00007fc98fa8b952 in ?? () from /usr/lib/libQtCore.so.4
#4  0x00007fc98c48f3ba in start_thread () from /lib/libpthread.so.0
#5  0x00007fc98efe8fcd in clone () from /lib/libc.so.6
#6  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7fc9945f6790 (LWP 3641)):
[KCrash Handler]
#5  0x00007fc98fb8baa5 in QMetaObject::activate () from /usr/lib/libQtCore.so.4
#6  0x00007fc97240974f in TaskManager::AbstractGroupingStrategy::groupRemoved () from /usr/lib/libtaskmanager.so.4
#7  0x00007fc97240ad2e in TaskManager::AbstractGroupingStrategy::closeGroup () from /usr/lib/libtaskmanager.so.4
#8  0x00007fc972411328 in ?? () from /usr/lib/libtaskmanager.so.4
#9  0x00007fc972411f0d in ?? () from /usr/lib/libtaskmanager.so.4
#10 0x00007fc98fb8a1f2 in QMetaObject::activate () from /usr/lib/libQtCore.so.4
#11 0x00007fc9724217f2 in TaskManager::TaskGroup::itemRemoved () from /usr/lib/libtaskmanager.so.4
#12 0x00007fc97240d008 in TaskManager::GroupManager::remove () from /usr/lib/libtaskmanager.so.4
#13 0x00007fc97240ebcb in TaskManager::GroupManager::qt_metacall () from /usr/lib/libtaskmanager.so.4
#14 0x00007fc98fb8a1f2 in QMetaObject::activate () from /usr/lib/libQtCore.so.4
#15 0x00007fc972424c15 in TaskManager::TaskManager::taskRemoved () from /usr/lib/libtaskmanager.so.4
#16 0x00007fc9724260e9 in TaskManager::TaskManager::windowRemoved () from /usr/lib/libtaskmanager.so.4
#17 0x00007fc972427ddf in TaskManager::TaskManager::qt_metacall () from /usr/lib/libtaskmanager.so.4
#18 0x00007fc98fb8a1f2 in QMetaObject::activate () from /usr/lib/libQtCore.so.4
#19 0x00007fc992aa0d92 in KWindowSystem::windowRemoved () from /usr/lib/libkdeui.so.5
#20 0x00007fc992aa32db in ?? () from /usr/lib/libkdeui.so.5
#21 0x00007fc992ab2190 in NETRootInfo::update () from /usr/lib/libkdeui.so.5
#22 0x00007fc992ab24cb in NETRootInfo::event () from /usr/lib/libkdeui.so.5
#23 0x00007fc992aa35ab in ?? () from /usr/lib/libkdeui.so.5
#24 0x00007fc992975683 in KApplication::x11EventFilter () from /usr/lib/libkdeui.so.5
#25 0x00007fc9942e63b4 in ?? () from /usr/lib/libkdeinit4_plasma.so
#26 0x00007fc990315b1f in ?? () from /usr/lib/libQtGui.so.4
#27 0x00007fc990328faf in QApplication::x11ProcessEvent () from /usr/lib/libQtGui.so.4
#28 0x00007fc990352464 in ?? () from /usr/lib/libQtGui.so.4
#29 0x00007fc98a85f20a in IA__g_main_context_dispatch (context=0x1cc6920) at /build/buildd/glib2.0-2.20.1/glib/gmain.c:1814
#30 0x00007fc98a8628e0 in g_main_context_iterate (context=0x1cc6920, block=1, dispatch=1, self=<value optimized out>) at /build/buildd/glib2.0-2.20.1/glib/gmain.c:2448
#31 0x00007fc98a862a7c in IA__g_main_context_iteration (context=0x1cc6920, may_block=1) at /build/buildd/glib2.0-2.20.1/glib/gmain.c:2511
#32 0x00007fc98fb9de6f in QEventDispatcherGlib::processEvents () from /usr/lib/libQtCore.so.4
#33 0x00007fc990351bef in ?? () from /usr/lib/libQtGui.so.4
#34 0x00007fc98fb73002 in QEventLoop::processEvents () from /usr/lib/libQtCore.so.4
#35 0x00007fc98fb733cd in QEventLoop::exec () from /usr/lib/libQtCore.so.4
#36 0x00007fc98fb75694 in QCoreApplication::exec () from /usr/lib/libQtCore.so.4
#37 0x00007fc9942d59bb in kdemain () from /usr/lib/libkdeinit4_plasma.so
#38 0x00007fc98ef215a6 in __libc_start_main () from /lib/libc.so.6
#39 0x00000000004007c9 in _start ()
Comment 9 Dario Andres 2009-09-07 16:24:23 UTC 
@dwrunkle1@cox.net: No, your crash is reported at bug 188378, and it is a different problem already fixed on KDE4.3. Thanks anyways
Comment 10 Dario Andres 2009-09-18 14:09:27 UTC 
*** Bug 207782 has been marked as a duplicate of this bug. ***
Comment 11 Dario Andres 2009-09-20 02:28:06 UTC 
*** Bug 207930 has been marked as a duplicate of this bug. ***
Comment 12 Dario Andres 2009-09-30 17:05:55 UTC 
*** Bug 208856 has been marked as a duplicate of this bug. ***
Comment 13 Dario Andres 2009-10-14 02:06:01 UTC 
*** Bug 210393 has been marked as a duplicate of this bug. ***
Comment 14 Dario Andres 2009-10-23 14:26:25 UTC 
So far, all the reported issues with this backtrace comes from Fedora.. could anyone report this in their bugtracker: https://bugzilla.redhat.com/ ?
Thanks
Comment 15 Dario Andres 2009-10-23 14:26:33 UTC 
*** Bug 211516 has been marked as a duplicate of this bug. ***
Comment 16 Aaron J. Seigo 2009-11-03 19:46:55 UTC 
*** Bug 202839 has been marked as a duplicate of this bug. ***
Comment 17 Aaron J. Seigo 2009-11-03 19:47:07 UTC 
*** Bug 212928 has been marked as a duplicate of this bug. ***
Comment 18 Aaron J. Seigo 2009-11-03 19:47:49 UTC 
bug #212928 was on ubuntu, so it isn't fedora specific. it may be x.org driver specific, though, with ubuntu only picking up this driver after fedora?
Comment 19 Dario Andres 2009-11-03 22:03:33 UTC 
*** Bug 212981 has been marked as a duplicate of this bug. ***
Comment 20 Dario Andres 2009-11-03 22:08:09 UTC 
In fact, I was trying to have two different "main" reports because of the
"Plasma::Theme::font"/"SystemTray::X11EmbedContainer::embedSystemTrayClient"
differences between Fedora-exclusive backtraces and the other ones..., but I
guess they are all related in the end...
Regards
Comment 21 Aaron J. Seigo 2009-11-04 21:26:34 UTC 
*** Bug 213125 has been marked as a duplicate of this bug. ***
Comment 22 Beat Wolf 2009-11-05 12:40:34 UTC 
https://bugs.kde.org/show_bug.cgi?id=213203 has a better backtrace i think
Comment 23 Beat Wolf 2009-11-05 12:40:40 UTC 
*** Bug 213203 has been marked as a duplicate of this bug. ***
Comment 24 Aaron J. Seigo 2009-11-05 19:57:53 UTC 
*** Bug 212792 has been marked as a duplicate of this bug. ***
Comment 25 Aaron J. Seigo 2009-11-05 20:02:50 UTC 
something is going very wrong in this method as called from a number of different places as can be seen in the various backtraces.

after doing some research in various g++ bug reports and reading some fun articles on switch statement handling, the only thing i can think of is that the switch statement is failing (bad value passed in? compiler bug?) and no return is made due to the switch statement and we enter an undefined state. :/

i've added a switch statement to the end of the method to help the compiler out in this case. hopefully this closes this issue for good, though i'll keep an eye out for similar bt's and reopen in necessary.

cheers.
Comment 26 Dario Andres 2009-11-05 22:23:59 UTC 
*** Bug 213292 has been marked as a duplicate of this bug. ***
Comment 27 Dario Andres 2009-11-06 13:47:35 UTC 
*** Bug 213373 has been marked as a duplicate of this bug. ***
Comment 28 Dario Andres 2009-11-09 23:31:54 UTC 
*** Bug 213494 has been marked as a duplicate of this bug. ***
Comment 29 Dario Andres 2009-11-09 23:31:59 UTC 
*** Bug 213820 has been marked as a duplicate of this bug. ***
Comment 30 Dario Andres 2009-11-11 01:00:43 UTC 
*** Bug 214044 has been marked as a duplicate of this bug. ***
Comment 31 Jonathan Thomas 2009-11-11 14:45:07 UTC 
*** Bug 214105 has been marked as a duplicate of this bug. ***
Comment 32 Aaron J. Seigo 2009-11-11 21:17:29 UTC 
*** Bug 214120 has been marked as a duplicate of this bug. ***
Comment 33 Dario Andres 2009-11-11 21:24:55 UTC 
*** Bug 214117 has been marked as a duplicate of this bug. ***
Comment 34 Dario Andres 2009-11-14 03:40:33 UTC 
*** Bug 214468 has been marked as a duplicate of this bug. ***
Comment 35 Jonathan Thomas 2009-11-17 20:34:32 UTC 
*** Bug 214991 has been marked as a duplicate of this bug. ***
Comment 36 Dario Andres 2009-11-19 13:49:23 UTC 
*** Bug 215244 has been marked as a duplicate of this bug. ***
Comment 37 Dario Andres 2009-11-19 13:51:38 UTC 
*** Bug 215233 has been marked as a duplicate of this bug. ***
Comment 38 Dario Andres 2009-11-19 14:04:29 UTC 
*** Bug 215276 has been marked as a duplicate of this bug. ***
Comment 39 Dario Andres 2009-11-20 00:21:39 UTC 
*** Bug 215302 has been marked as a duplicate of this bug. ***
Comment 40 Dario Andres 2009-11-20 23:21:16 UTC 
*** Bug 215449 has been marked as a duplicate of this bug. ***
Comment 41 Dario Andres 2009-11-23 16:13:19 UTC 
*** Bug 215839 has been marked as a duplicate of this bug. ***
Comment 42 Dario Andres 2009-11-26 00:06:27 UTC 
*** Bug 216166 has been marked as a duplicate of this bug. ***
Comment 43 Dario Andres 2009-11-28 16:14:17 UTC 
*** Bug 216519 has been marked as a duplicate of this bug. ***
Comment 44 Dotan Cohen 2009-11-29 13:02:05 UTC 
Why is this marked as fixed? There are still bugs being filed about this with KDE 4.3.2 and most of the dupes have dupes as well. I see no mention of a fix anywhere.
Comment 45 Beat Wolf 2009-11-29 13:18:08 UTC 
because from what i can read from aarons post that it has been fixed in trunk, but not in 4.3. and indeed, there where no backtraces from trunk since then, so it probably is indeed fixed
Comment 46 Dotan Cohen 2009-11-29 13:27:46 UTC 
For my own future reference, that would be comment #25. Thanks. If I see any KDE 4.4 dupes I'll make mention of it.

Have a great week.
Comment 47 Dario Andres 2009-11-30 20:11:22 UTC 
*** Bug 216847 has been marked as a duplicate of this bug. ***
Comment 48 FiNeX 2009-12-01 17:33:04 UTC 
*** Bug 216949 has been marked as a duplicate of this bug. ***
Comment 49 Dario Andres 2009-12-04 00:30:04 UTC 
*** Bug 217221 has been marked as a duplicate of this bug. ***
Comment 50 Dario Andres 2009-12-07 12:55:08 UTC 
*** Bug 217706 has been marked as a duplicate of this bug. ***
Comment 51 Dario Andres 2009-12-10 23:04:12 UTC 
*** Bug 218189 has been marked as a duplicate of this bug. ***
Comment 52 Dario Andres 2009-12-12 02:31:37 UTC 
*** Bug 218341 has been marked as a duplicate of this bug. ***
Comment 53 Dario Andres 2009-12-19 13:57:29 UTC 
*** Bug 219273 has been marked as a duplicate of this bug. ***
Comment 54 Dario Andres 2009-12-22 01:26:25 UTC 
*** Bug 219616 has been marked as a duplicate of this bug. ***
Comment 55 Dario Andres 2009-12-25 14:07:59 UTC 
*** Bug 220034 has been marked as a duplicate of this bug. ***
Comment 56 Jonathan Thomas 2009-12-27 00:34:59 UTC 
*** Bug 220170 has been marked as a duplicate of this bug. ***
Comment 57 Jonathan Thomas 2009-12-27 00:41:29 UTC 
*** Bug 220176 has been marked as a duplicate of this bug. ***
Comment 58 Jonathan Thomas 2009-12-29 14:55:28 UTC 
*** Bug 220514 has been marked as a duplicate of this bug. ***
Comment 59 Jonathan Thomas 2009-12-31 01:09:30 UTC 
*** Bug 220743 has been marked as a duplicate of this bug. ***
Comment 60 Jonathan Thomas 2009-12-31 01:13:39 UTC 
*** Bug 220745 has been marked as a duplicate of this bug. ***
Comment 61 Dario Andres 2009-12-31 14:31:36 UTC 
*** Bug 220760 has been marked as a duplicate of this bug. ***
Comment 62 Dario Andres 2010-01-13 13:31:03 UTC 
*** Bug 222530 has been marked as a duplicate of this bug. ***
Comment 63 Dario Andres 2010-01-15 16:11:28 UTC 
*** Bug 222855 has been marked as a duplicate of this bug. ***
Comment 64 Dario Andres 2010-01-19 00:59:42 UTC 
*** Bug 223354 has been marked as a duplicate of this bug. ***
Comment 65 Dario Andres 2010-01-28 21:49:16 UTC 
*** Bug 224667 has been marked as a duplicate of this bug. ***
Comment 66 Tim McKenzie 2010-01-29 22:33:22 UTC 
Is there a reason everyone was removed from the CC list?  Or was it accidental?
Comment 67 Dario Andres 2010-01-29 22:45:14 UTC 
There is a reason: the bug is fixed in 4.4, but the duplicate reports keep coming from 4.3 installations. Removing everyone from the CC list will avoid the previous reporter to get tons of mails from this report :). Regards
Comment 68 Jonathan Thomas 2010-01-31 06:08:25 UTC 
*** Bug 224958 has been marked as a duplicate of this bug. ***
Comment 69 Dario Andres 2010-01-31 18:21:48 UTC 
*** Bug 225021 has been marked as a duplicate of this bug. ***
Comment 70 Dario Andres 2010-02-02 19:09:00 UTC 
*** Bug 225265 has been marked as a duplicate of this bug. ***
Comment 71 Dario Andres 2010-02-02 22:49:21 UTC 
*** Bug 225308 has been marked as a duplicate of this bug. ***
Comment 72 Dario Andres 2010-02-03 13:35:53 UTC 
*** Bug 225341 has been marked as a duplicate of this bug. ***
Comment 73 Dario Andres 2010-02-04 01:58:58 UTC 
*** Bug 225422 has been marked as a duplicate of this bug. ***
Comment 74 Dario Andres 2010-02-04 02:03:56 UTC 
*** Bug 225411 has been marked as a duplicate of this bug. ***
Comment 75 Aaron J. Seigo 2010-02-05 02:37:57 UTC 
*** Bug 225541 has been marked as a duplicate of this bug. ***
Comment 76 Dario Andres 2010-02-06 23:46:44 UTC 
*** Bug 225775 has been marked as a duplicate of this bug. ***
Comment 77 Dario Andres 2010-02-10 12:54:33 UTC 
*** Bug 226036 has been marked as a duplicate of this bug. ***
Comment 78 Dario Andres 2010-02-10 12:58:06 UTC 
*** Bug 226026 has been marked as a duplicate of this bug. ***
Comment 79 Dario Andres 2010-02-15 03:46:37 UTC 
*** Bug 226914 has been marked as a duplicate of this bug. ***
Comment 80 Dario Andres 2010-02-15 03:52:01 UTC 
*** Bug 226755 has been marked as a duplicate of this bug. ***
Comment 81 Dario Andres 2010-02-18 20:24:56 UTC 
*** Bug 227436 has been marked as a duplicate of this bug. ***
Comment 82 Dario Andres 2010-02-22 13:11:51 UTC 
*** Bug 227999 has been marked as a duplicate of this bug. ***
Comment 83 Dario Andres 2010-02-23 04:06:35 UTC 
*** Bug 228053 has been marked as a duplicate of this bug. ***
Comment 84 Dario Andres 2010-02-24 22:22:28 UTC 
*** Bug 228369 has been marked as a duplicate of this bug. ***
Comment 85 Dario Andres 2010-02-26 02:26:59 UTC 
*** Bug 228557 has been marked as a duplicate of this bug. ***
Comment 86 Dario Andres 2010-02-27 14:19:11 UTC 
*** Bug 228734 has been marked as a duplicate of this bug. ***
Comment 87 Dario Andres 2010-03-03 23:19:34 UTC 
*** Bug 229301 has been marked as a duplicate of this bug. ***
Comment 88 Dario Andres 2010-03-05 12:48:14 UTC 
*** Bug 229511 has been marked as a duplicate of this bug. ***
Comment 89 Aaron J. Seigo 2010-03-12 23:53:43 UTC 
*** Bug 230519 has been marked as a duplicate of this bug. ***
Comment 90 Dario Andres 2010-03-13 20:03:51 UTC 
*** Bug 230527 has been marked as a duplicate of this bug. ***
Comment 91 Dario Andres 2010-03-14 23:41:12 UTC 
*** Bug 230726 has been marked as a duplicate of this bug. ***
Comment 92 Dario Andres 2010-03-21 13:16:49 UTC 
*** Bug 231492 has been marked as a duplicate of this bug. ***
Comment 93 Jonathan Thomas 2010-03-23 03:25:43 UTC 
*** Bug 231850 has been marked as a duplicate of this bug. ***
Comment 94 Beat Wolf 2010-03-23 10:16:06 UTC 
seems like this bug is not yet closed. see:
https://bugs.kde.org/show_bug.cgi?id=231839

reopening for now
Comment 95 Dario Andres 2010-03-23 12:30:24 UTC 
From bug 231839:
-- Information about the crash:
Firefox opened with several tabs in two windows I was lloking for a Bookmark.
While scolling the menu plasma complained, without any obviously visible
failure.

-- Backtrace:
[KCrash Handler]
#5  XVisualIDFromVisual (visual=0x0) at Misc.c:61
#6  0x0000003c36e4662f in qt_x11_getX11InfoForWindow (xinfo=0x3065880,
att=<value optimized out>) at kernel/qwidget_x11.cpp:3052
#7  0x0000003c36e466c0 in qt_x11_getX11InfoForWindow (xinfo=0x0, a=<value
optimized out>) at kernel/qwidget_x11.cpp:428
#8  0x0000003c36e4e0d7 in QWidgetPrivate::create_sys (this=0x30656a0,
window=<value optimized out>, initializeWindow=<value optimized out>,
destroyOldWindow=<value optimized out>)
    at kernel/qwidget_x11.cpp:589
#9  0x0000003c36e02c6e in QWidget::create (this=0x30aef70, window=27301854,
initializeWindow=144, destroyOldWindow=16) at kernel/qwidget.cpp:1319
#10 0x00007fd8a4189fc9 in SystemTray::X11EmbedContainer::embedSystemTrayClient
(this=0x30aef70, clientId=77594696)
    at
/usr/src/debug/kdebase-workspace-4.4.1/plasma/generic/applets/systemtray/protocols/fdo/x11embedcontainer.cpp:110
#11 0x00007fd8a418607e in SystemTray::FdoGraphicsWidget::setupXEmbedDelegate
(this=0x2d37180)
    at
/usr/src/debug/kdebase-workspace-4.4.1/plasma/generic/applets/systemtray/protocols/fdo/fdographicswidget.cpp:162
#12 0x00007fd8a41861e4 in SystemTray::FdoGraphicsWidget::qt_metacall
(this=0x2d37180, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>,
_a=<value optimized out>)
    at
/usr/src/debug/kdebase-workspace-4.4.1/x86_64-redhat-linux-gnu/plasma/generic/applets/systemtray/fdographicswidget.moc:84
Comment 96 Dario Andres 2010-03-23 12:32:01 UTC 
*** Bug 231879 has been marked as a duplicate of this bug. ***
Comment 97 Dario Andres 2010-03-25 11:59:09 UTC 
*** Bug 232071 has been marked as a duplicate of this bug. ***
Comment 98 Dario Andres 2010-03-28 14:45:14 UTC 
*** Bug 232445 has been marked as a duplicate of this bug. ***
Comment 99 Dario Andres 2010-03-31 14:37:04 UTC 
*** Bug 232794 has been marked as a duplicate of this bug. ***
Comment 100 Dario Andres 2010-04-06 23:32:35 UTC 
*** Bug 233535 has been marked as a duplicate of this bug. ***
Comment 101 Dario Andres 2010-04-12 14:27:47 UTC 
*** Bug 234132 has been marked as a duplicate of this bug. ***
Comment 102 Dario Andres 2010-04-15 14:04:28 UTC 
*** Bug 234413 has been marked as a duplicate of this bug. ***
Comment 103 Dario Andres 2010-04-15 14:10:14 UTC 
*** Bug 234365 has been marked as a duplicate of this bug. ***
Comment 104 Dario Andres 2010-04-18 12:39:50 UTC 
*** Bug 234666 has been marked as a duplicate of this bug. ***
Comment 105 Jonathan Thomas 2010-04-22 17:32:42 UTC 
*** Bug 235060 has been marked as a duplicate of this bug. ***
Comment 106 Beat Wolf 2010-04-27 09:12:22 UTC 
*** Bug 235429 has been marked as a duplicate of this bug. ***
Comment 107 Beat Wolf 2010-04-27 09:31:47 UTC 
*** Bug 235180 has been marked as a duplicate of this bug. ***
Comment 108 Beat Wolf 2010-04-27 09:53:43 UTC 
*** Bug 235086 has been marked as a duplicate of this bug. ***
Comment 109 Beat Wolf 2010-04-30 11:08:53 UTC 
*** Bug 235791 has been marked as a duplicate of this bug. ***
Comment 110 Beat Wolf 2010-05-05 20:40:44 UTC 
*** Bug 236467 has been marked as a duplicate of this bug. ***
Comment 111 Beat Wolf 2010-05-06 18:29:16 UTC 
*** Bug 236575 has been marked as a duplicate of this bug. ***
Comment 112 Beat Wolf 2010-05-10 20:56:50 UTC 
*** Bug 237149 has been marked as a duplicate of this bug. ***
Comment 113 Beat Wolf 2010-05-10 23:43:43 UTC 
*** Bug 237166 has been marked as a duplicate of this bug. ***
Comment 114 Beat Wolf 2010-05-14 14:30:28 UTC 
*** Bug 237407 has been marked as a duplicate of this bug. ***
Comment 115 Beat Wolf 2010-05-18 09:08:11 UTC 
*** Bug 237985 has been marked as a duplicate of this bug. ***
Comment 116 Beat Wolf 2010-05-23 10:15:21 UTC 
*** Bug 238504 has been marked as a duplicate of this bug. ***
Comment 117 Beat Wolf 2010-05-23 13:53:05 UTC 
*** Bug 238564 has been marked as a duplicate of this bug. ***
Comment 118 Beat Wolf 2010-06-02 00:11:09 UTC 
*** Bug 240369 has been marked as a duplicate of this bug. ***
Comment 119 Nicolas L. 2010-06-03 15:44:20 UTC 
from comment #67 this bug is fixed in kde 4.4 and +
so i close this bugreport
Comment 120 Nicolas L. 2010-06-04 12:07:17 UTC 
*** Bug 238564 has been marked as a duplicate of this bug. ***
Comment 121 Christoph Feck 2010-06-13 16:00:34 UTC 
Nicolas, if you had read further, comment #94 says it still happens, and was reopened for this reason. Also, I see no commit that fixes the issue.
Comment 122 Beat Wolf 2010-06-18 11:34:57 UTC 
*** Bug 242053 has been marked as a duplicate of this bug. ***
Comment 123 omega 2010-06-19 01:12:12 UTC 
Created attachment 48122 [details]
New crash information added by DrKonqi

plasma crash when loading software update (kpackagekit)
Comment 124 Marco Martin 2010-06-20 19:26:56 UTC 
*** Bug 242247 has been marked as a duplicate of this bug. ***
Comment 125 Christoph Feck 2010-06-26 22:46:32 UTC 
SVN commit 1143197 by cfeck:

Do not hard code font sizes or names

Also, avoid constructing a font in the first place. This might help
for the (original) bug 198294, where Plasma::Theme::font() crashes
in widget creation.

CCBUG: 198294


 M  +1 -1      theme.cpp  


WebSVN link: http://websvn.kde.org/?view=rev&revision=1143197
Comment 126 Beat Wolf 2010-07-11 20:53:44 UTC 
*** Bug 244193 has been marked as a duplicate of this bug. ***
Comment 127 Beat Wolf 2010-07-13 19:15:41 UTC 
*** Bug 244508 has been marked as a duplicate of this bug. ***
Comment 128 Beat Wolf 2010-08-09 15:12:33 UTC 
*** Bug 247082 has been marked as a duplicate of this bug. ***
Comment 129 Christoph Feck 2010-08-11 20:50:30 UTC 
http://bugreports.qt.nokia.com/browse/QTBUG-12836
Comment 130 Christoph Feck 2010-08-13 16:54:51 UTC 
SVN commit 1163224 by cfeck:

Do not pass an invalid Window to QWidget::create()

CCBUG: 198294


 M  +7 -0      x11embedcontainer.cpp  


WebSVN link: http://websvn.kde.org/?view=rev&revision=1163224
Comment 131 Christoph Feck 2010-08-13 16:56:35 UTC 
This crash is caused by passing an invalid window (BadMatch) to
QWidget::create(). For details, see the discussion in the upstream link.

Creating the window can fail when passed a visual that is not compatible with the visual of the parent window.

I have no idea how/if Plasma can handle this case, but it should make sure it does not pass an invalid window to QWidget::create().

For the meantime, I committed the above mentioned fix to trunk. Plasma team can decide to improve upon it, revert it, or backport it.
Comment 132 Beat Wolf 2010-09-01 15:47:24 UTC 
*** Bug 249408 has been marked as a duplicate of this bug. ***
Comment 133 Beat Wolf 2010-09-01 23:26:09 UTC 
*** Bug 249801 has been marked as a duplicate of this bug. ***
Comment 134 Beat Wolf 2010-09-08 15:11:29 UTC 
*** Bug 250460 has been marked as a duplicate of this bug. ***
Comment 135 bonato.leo 2010-09-11 09:13:40 UTC 
Application: plasma-desktop (0.3)
KDE Platform Version: 4.5.1 (KDE 4.5.1)
Qt Version: 4.6.3
Operating System: Linux 2.6.35-ARCH i686

-- Information about the crash:
It looks like a duplicate of all these bugs, although I don't have enough knowledge to tell. It happens randomly (but quite often, say about every 15 minutes). It happens while I'm using any application or even when the PC is just left by itself. Plasma crashes and sometimes (but not always) restarts itself automatically. I'm not aware of any settings that might have some relation to the crashes.

-- Backtrace:
Application: Plasma Workspace (kdeinit4), signal: Segmentation fault
[Current thread is 1 (Thread 0xb5a7fad0 (LWP 4317))]

Thread 2 (Thread 0xa8b3ab70 (LWP 7098)):
[KCrash Handler]
#7  0xb6ff5a3c in QSocketNotifier::setEnabled(bool) () from /usr/lib/libQtCore.so.4
#8  0xb7006924 in ?? () from /usr/lib/libQtCore.so.4
#9  0xb5e24be7 in g_main_context_check () from /usr/lib/libglib-2.0.so.0
#10 0xb5e2551a in g_main_context_iterate () from /usr/lib/libglib-2.0.so.0
#11 0xb5e25a04 in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#12 0xb7006e7c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#13 0xb6fdb119 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#14 0xb6fdb38a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#15 0xb6ee788d in QThread::exec() () from /usr/lib/libQtCore.so.4
#16 0xabab4c49 in ?? () from /usr/lib/kde4/plasma_applet_emailnotify.so
#17 0xb6eea32e in ?? () from /usr/lib/libQtCore.so.4
#18 0xb6e77e60 in start_thread () from /lib/libpthread.so.0
#19 0xb62bc20e in clone () from /lib/libc.so.6

Thread 1 (Thread 0xb5a7fad0 (LWP 4317)):
#0  0xb781a424 in __kernel_vsyscall ()
#1  0xb6e7f44b in write () from /lib/libpthread.so.0
#2  0xb5e2cd26 in write_string () from /usr/lib/libglib-2.0.so.0
#3  0xb5e2d0ba in g_log_default_handler () from /usr/lib/libglib-2.0.so.0
#4  0xb5e2da6e in g_logv () from /usr/lib/libglib-2.0.so.0
#5  0xb5e2de86 in g_log () from /usr/lib/libglib-2.0.so.0
#6  0xaabd0694 in ?? () from /usr/lib/libgstreamer-0.10.so.0
#7  0xaabd1fe9 in ?? () from /usr/lib/libgstreamer-0.10.so.0
#8  0xb5d0a683 in g_object_unref () from /usr/lib/libgobject-2.0.so.0
#9  0xaab75c0f in gst_object_unref () from /usr/lib/libgstreamer-0.10.so.0
#10 0xab74b35c in ?? () from /usr/lib/libgstaudio-0.10.so.0
#11 0xb5d0a683 in g_object_unref () from /usr/lib/libgobject-2.0.so.0
#12 0xaab75c0f in gst_object_unref () from /usr/lib/libgstreamer-0.10.so.0
#13 0xaab7ac9f in ?? () from /usr/lib/libgstreamer-0.10.so.0
#14 0xaab7dd30 in gst_bin_remove () from /usr/lib/libgstreamer-0.10.so.0
#15 0xaab7de8e in ?? () from /usr/lib/libgstreamer-0.10.so.0
#16 0xb5d0a683 in g_object_unref () from /usr/lib/libgobject-2.0.so.0
#17 0xaab75c0f in gst_object_unref () from /usr/lib/libgstreamer-0.10.so.0
#18 0xaab7ac9f in ?? () from /usr/lib/libgstreamer-0.10.so.0
#19 0xaab7dd30 in gst_bin_remove () from /usr/lib/libgstreamer-0.10.so.0
#20 0xaab7de8e in ?? () from /usr/lib/libgstreamer-0.10.so.0
#21 0xb5d0a683 in g_object_unref () from /usr/lib/libgobject-2.0.so.0
#22 0xaab75c0f in gst_object_unref () from /usr/lib/libgstreamer-0.10.so.0
#23 0xab7ad177 in Phonon::Gstreamer::MediaObject::~MediaObject() () from /usr/lib/kde4/plugins/phonon_backend/phonon_gstreamer.so
#24 0xab7ad282 in Phonon::Gstreamer::MediaObject::~MediaObject() () from /usr/lib/kde4/plugins/phonon_backend/phonon_gstreamer.so
#25 0xb39d956c in Phonon::MediaNodePrivate::deleteBackendObject() () from /usr/lib/libphonon.so.4
#26 0xb39e7083 in Phonon::FactoryPrivate::~FactoryPrivate() () from /usr/lib/libphonon.so.4
#27 0xb39e7372 in Phonon::FactoryPrivate::~FactoryPrivate() () from /usr/lib/libphonon.so.4
#28 0xb39e5b75 in Phonon::._259::destroy() () from /usr/lib/libphonon.so.4
#29 0xb39e256b in Phonon::CleanUpGlobalStatic::~CleanUpGlobalStatic() () from /usr/lib/libphonon.so.4
#30 0xb621addf in ?? () from /lib/libc.so.6
#31 0xb621ae3f in exit () from /lib/libc.so.6
#32 0xb65bc99b in ?? () from /usr/lib/libQtGui.so.4
#33 0xb763256a in KApplication::xioErrhandler(_XDisplay*) () from /usr/lib/libkdeui.so.5
#34 0xb76325a6 in ?? () from /usr/lib/libkdeui.so.5
#35 0xb7390e96 in _XIOError () from /usr/lib/libX11.so.6
#36 0xb7397fdf in _XEventsQueued () from /usr/lib/libX11.so.6
#37 0xb738124b in XEventsQueued () from /usr/lib/libX11.so.6
#38 0xb65f6f95 in ?? () from /usr/lib/libQtGui.so.4
#39 0xb5e24be7 in g_main_context_check () from /usr/lib/libglib-2.0.so.0
#40 0xb5e2551a in g_main_context_iterate () from /usr/lib/libglib-2.0.so.0
#41 0xb5e25a04 in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#42 0xb7006e7c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#43 0xb65f71b5 in ?? () from /usr/lib/libQtGui.so.4
#44 0xb6fdb119 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#45 0xb6fdb38a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#46 0xb6fdfc6f in QCoreApplication::exec() () from /usr/lib/libQtCore.so.4
#47 0xb6548637 in QApplication::exec() () from /usr/lib/libQtGui.so.4
#48 0xb333f423 in kdemain () from /usr/lib/libkdeinit4_plasma-desktop.so
#49 0x0804d839 in _start ()
Comment 136 Aaron J. Seigo 2010-09-11 20:03:56 UTC 
the issue in comment #135 is a different issue, and due to a third party applet (email notifier).
Comment 137 Christoph Feck 2010-09-14 01:58:10 UTC 
I don't think my commit (comment #130) qualifies as a fix. It is true that Qt no longer crashes because of the passed invalid Window, but such a Window should not be created in the first place.

Until this will be fixed (which I have no idea how to solve, I only have read something about needing to pass a good color map, as well as background pixel values) we will get bug reports for missing icons on the system tray instead.
Comment 138 Beat Wolf 2010-09-14 08:53:50 UTC 
ah, thats why i don't have a amarok icon anymore?
Comment 139 Beat Wolf 2010-10-14 11:18:09 UTC 
*** Bug 254067 has been marked as a duplicate of this bug. ***
Comment 140 Beat Wolf 2010-10-28 10:37:33 UTC 
*** Bug 255461 has been marked as a duplicate of this bug. ***
Comment 141 Beat Wolf 2010-10-28 10:38:31 UTC 
is this supposed to be fixed in 4.5.2 ? because the last duplicate was from that version. If yes, i will reopen that bugreport.
Comment 142 Christoph Feck 2010-10-28 13:40:36 UTC 
Please read comment #137. To make it short: The commit that fixes the crash is only in trunk, and I did not backport it because of comment #131.
Comment 143 Dario Andres 2011-04-10 13:55:58 UTC 
*** Bug 269679 has been marked as a duplicate of this bug. ***
Comment 144 Jim Metz 2011-04-10 18:37:41 UTC 
In regard to Comment #137 From Christoph Feck 2010-09-14 01:58:10

I can not add the "Task Manager" icon to the panel. I would click on the panel cashew select "Add Widgets". The widgets selection panel would then appear with the Widgets that are loaded on the box. Then scroll to the "Task Manager" icon. A information panel for the Widget then appears and I press the left mouse button. The icon would then grey out. But the "Task Manager" is not added to the panel. This will add any other Widget just not the "Task Manager". I used to be able to reload the Nvidia driver (The factory driver close source the version did not matter) to fix the problem. That no longer works. I know this is a little off the subject but I hope it helps.