Bug 166128

Summary:	Taskbar crashes when I click on it
Product:	[Unmaintained] plasma4	Reporter:	Carsten Niehaus <cniehaus>
Component:	general	Assignee:	Plasma Bugs List <plasma-bugs>
Status:	RESOLVED FIXED
Severity:	crash
Priority:	NOR
Version:	unspecified
Target Milestone:	---
Platform:	openSUSE
OS:	Linux
Latest Commit:		Version Fixed In:
Sentry Crash Report:

Description Carsten Niehaus 2008-07-09 13:28:38 UTC

Version:           KDE: 4.00.83 (KDE 4.0.83 (KDE 4.1 Beta2) "release 4.2" (using KDE 4.0.83)
Installed from:    SuSE RPMs
OS:                Linux

The taskbar crashes a lot here, always when I click on it. It doesn't happen every time, but perhaps ever second time. Usually it recoveres but sometimes only a restart of KDE4 (or plasma from Konsole) helps.

Comment 1 Carsten Niehaus 2008-07-09 13:28:48 UTC

Anwendung: Plasma-Arbeitsfläche (<unknown>), Signal SIGSEGV
 [?1034hUsing host libthread_db library "/lib/libthread_db.so.1".
[Thread debugging using libthread_db enabled]
[New Thread 0xb57a96d0 (LWP 4040)]
[New Thread 0xb25bdb90 (LWP 4049)]
[New Thread 0xb3a4ab90 (LWP 4042)]
[KCrash handler]
#6  0x08457595 in ?? ()
#7  0xb604b8b9 in QPainter::begin () from /usr/lib/libQtGui.so.4
#8  0xb604bf06 in QPainter::QPainter () from /usr/lib/libQtGui.so.4
#9  0xb3aff7a4 in WindowTaskItem::drawBackground ()
   from /usr/lib/kde4/plasma_applet_tasks.so
#10 0xb3afdbc5 in WindowTaskItem::paint ()
   from /usr/lib/kde4/plasma_applet_tasks.so
#11 0xb6460e61 in _q_paintItem () from /usr/lib/libQtGui.so.4
#12 0xb6462ace in QGraphicsScenePrivate::drawItemHelper ()
   from /usr/lib/libQtGui.so.4
#13 0xb6464317 in QGraphicsScene::drawItems () from /usr/lib/libQtGui.so.4
#14 0xb6474e4c in QGraphicsView::drawItems () from /usr/lib/libQtGui.so.4
#15 0xb647d196 in QGraphicsView::paintEvent () from /usr/lib/libQtGui.so.4
#16 0xb5fb1409 in QWidget::event () from /usr/lib/libQtGui.so.4
#17 0xb629a6c3 in QFrame::event () from /usr/lib/libQtGui.so.4
#18 0xb631e05f in QAbstractScrollArea::viewportEvent ()
   from /usr/lib/libQtGui.so.4
#19 0xb647ed5f in QGraphicsView::viewportEvent () from /usr/lib/libQtGui.so.4
#20 0xb631fd15 in QAbstractScrollAreaFilter::eventFilter ()
   from /usr/lib/libQtGui.so.4
#21 0xb6a48c31 in QCoreApplicationPrivate::sendThroughObjectEventFilters ()
   from /usr/lib/libQtCore.so.4
#22 0xb5f61fe3 in QApplicationPrivate::notify_helper ()
   from /usr/lib/libQtGui.so.4
#23 0xb5f690e8 in QApplication::notify () from /usr/lib/libQtGui.so.4
#24 0xb79e4a0d in KApplication::notify () from /usr/lib/libkdeui.so.5
#25 0xb6a48d09 in QCoreApplication::notifyInternal ()
   from /usr/lib/libQtCore.so.4
#26 0xb5fb76ce in qt_sendSpontaneousEvent () from /usr/lib/libQtGui.so.4
#27 0xb5fb1e66 in QWidgetPrivate::drawWidget () from /usr/lib/libQtGui.so.4
#28 0xb5fb25fe in QWidgetPrivate::paintSiblingsRecursive ()
   from /usr/lib/libQtGui.so.4
#29 0xb5fb1b27 in QWidgetPrivate::drawWidget () from /usr/lib/libQtGui.so.4
#30 0xb60f5303 in QWidgetBackingStore::cleanRegion ()
   from /usr/lib/libQtGui.so.4
#31 0xb60f5677 in qt_syncBackingStore () from /usr/lib/libQtGui.so.4
#32 0xb5fb0e7f in QWidget::event () from /usr/lib/libQtGui.so.4
#33 0xb629a6c3 in QFrame::event () from /usr/lib/libQtGui.so.4
#34 0xb631eed1 in QAbstractScrollArea::event () from /usr/lib/libQtGui.so.4
#35 0xb64748c4 in QGraphicsView::event () from /usr/lib/libQtGui.so.4
#36 0xb5f6200c in QApplicationPrivate::notify_helper ()
   from /usr/lib/libQtGui.so.4
#37 0xb5f690e8 in QApplication::notify () from /usr/lib/libQtGui.so.4
#38 0xb79e4a0d in KApplication::notify () from /usr/lib/libkdeui.so.5
#39 0xb6a48d09 in QCoreApplication::notifyInternal ()
   from /usr/lib/libQtCore.so.4
#40 0xb6a4a00d in QCoreApplicationPrivate::sendPostedEvents ()
   from /usr/lib/libQtCore.so.4
#41 0xb6a4a1bd in QCoreApplication::sendPostedEvents ()
   from /usr/lib/libQtCore.so.4
#42 0xb5fe7b28 in QEventDispatcherX11::processEvents ()
   from /usr/lib/libQtGui.so.4
#43 0xb6a47f9d in QEventLoop::processEvents () from /usr/lib/libQtCore.so.4
#44 0xb6a48131 in QEventLoop::exec () from /usr/lib/libQtCore.so.4
#45 0xb6a4a27a in QCoreApplication::exec () from /usr/lib/libQtCore.so.4
#46 0xb5f61707 in QApplication::exec () from /usr/lib/libQtGui.so.4
#47 0xb7f78186 in kdemain () from /usr/lib/libkdeinit4_plasma.so
#48 0x080487f2 in main ()
#0  0xffffe410 in __kernel_vsyscall ()

Comment 2 Aaron J. Seigo 2008-07-09 13:36:50 UTC

odd; if it was crashing that often for people we would have heard about it, one would think, so you're probably running into something pretty specific.

can you post a backtrace with full debug symbols so i can get a line number there?

also, what plasma theme are you using? (or are you just using the defaults?)

Comment 3 Carsten Niehaus 2008-07-09 13:40:14 UTC

I was using the default theme. I just switched to "Elegance" and made it crash again.

I will now try to get a better backtrace.

Comment 4 Carsten Niehaus 2008-07-09 13:41:10 UTC

One more info, it also happens on mouseover from time to time I just noticed.

Comment 5 Carsten Niehaus 2008-07-11 13:08:57 UTC

I did a update two days ago which updated both Qt 4.4 and kdelibs+base. Since then I cannot reproduce this crash anymore. 



Therefor I will close it.