Application: plasma-desktop (0.3)
KDE Platform Version: 4.4.2 (KDE 4.4.2)
Qt Version: 4.6.2
Operating System: Linux 2.6.31-20-generic i686
Distribution: Ubuntu 9.10

-- Information about the crash:
Restarted system - upon login report that KDE has crashed appears. Black screen, but can still run programmes through keyboard shortcuts. 

The crash can be reproduced every time.

 -- Backtrace:
Application: Plasma Workspace (kdeinit4), signal: Segmentation fault
[Current thread is 1 (Thread 0xb76ff700 (LWP 1596))]

Thread 3 (Thread 0xab3a9b70 (LWP 1600)):
#0  0x00faf422 in __kernel_vsyscall ()
#1  0x00159142 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib/tls/i686/cmov/libpthread.so.0
#2  0x0101724f in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib/libQtCore.so.4
#3  0x0100b32b in ?? () from /usr/lib/libQtCore.so.4
#4  0x0101636e in ?? () from /usr/lib/libQtCore.so.4
#5  0x0015480e in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#6  0x0085c8de in clone () from /lib/tls/i686/cmov/libc.so.6

Thread 2 (Thread 0xaa3a7b70 (LWP 1609)):
#0  0x00faf422 in __kernel_vsyscall ()
#1  0x00158e15 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/tls/i686/cmov/libpthread.so.0
#2  0x03496407 in ?? () from /usr/lib/libQtWebKit.so.4
#3  0x03496451 in ?? () from /usr/lib/libQtWebKit.so.4
#4  0x0015480e in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#5  0x0085c8de in clone () from /lib/tls/i686/cmov/libc.so.6

Thread 1 (Thread 0xb76ff700 (LWP 1596)):
[KCrash Handler]
#6  0x07575cf0 in Plasma::Wallpaper::setUsingRenderingCache(bool) () from /usr/lib/libplasma.so.3
#7  0x01fa8579 in ?? () from /usr/lib/kde4/plasma_wallpaper_image.so
#8  0x07575b69 in Plasma::Wallpaper::restore(KConfigGroup const&) () from /usr/lib/libplasma.so.3
#9  0x0749ba4c in Plasma::Applet::paint(QPainter*, QStyleOptionGraphicsItem const*, QWidget*) () from /usr/lib/libplasma.so.3
#10 0x05924f9c in ?? () from /usr/lib/libQtGui.so.4
#11 0x0593fba4 in ?? () from /usr/lib/libQtGui.so.4
#12 0x05942054 in ?? () from /usr/lib/libQtGui.so.4
#13 0x05942cdb in ?? () from /usr/lib/libQtGui.so.4
#14 0x059436ae in ?? () from /usr/lib/libQtGui.so.4
#15 0x0595dc1b in QGraphicsView::paintEvent(QPaintEvent*) () from /usr/lib/libQtGui.so.4
#16 0x052ee5d6 in QWidget::event(QEvent*) () from /usr/lib/libQtGui.so.4
#17 0x056ea6a3 in QFrame::event(QEvent*) () from /usr/lib/libQtGui.so.4
#18 0x05784922 in QAbstractScrollArea::viewportEvent(QEvent*) () from /usr/lib/libQtGui.so.4
#19 0x0595a09b in QGraphicsView::viewportEvent(QEvent*) () from /usr/lib/libQtGui.so.4
#20 0x05787215 in ?? () from /usr/lib/libQtGui.so.4
#21 0x01117e8a in QCoreApplicationPrivate::sendThroughObjectEventFilters(QObject*, QEvent*) () from /usr/lib/libQtCore.so.4
#22 0x052903a9 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#23 0x052970b9 in QApplication::notify(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#24 0x00da55ba in KApplication::notify(QObject*, QEvent*) () from /usr/lib/libkdeui.so.5
#25 0x01118beb in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib/libQtCore.so.4
#26 0x052f78e6 in QWidgetPrivate::drawWidget(QPaintDevice*, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () from /usr/lib/libQtGui.so.4
#27 0x052f8725 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) ()
   from /usr/lib/libQtGui.so.4
#28 0x052f7635 in QWidgetPrivate::drawWidget(QPaintDevice*, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () from /usr/lib/libQtGui.so.4
#29 0x054cde70 in ?? () from /usr/lib/libQtGui.so.4
#30 0x052e7a93 in QWidgetPrivate::syncBackingStore() () from /usr/lib/libQtGui.so.4
#31 0x0531538e in ?? () from /usr/lib/libQtGui.so.4
#32 0x053209f6 in QApplication::x11ProcessEvent(_XEvent*) () from /usr/lib/libQtGui.so.4
#33 0x0535000a in ?? () from /usr/lib/libQtGui.so.4
#34 0x08360e88 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#35 0x08364730 in ?? () from /lib/libglib-2.0.so.0
#36 0x08364863 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#37 0x01144805 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#38 0x0534fb35 in ?? () from /usr/lib/libQtGui.so.4
#39 0x01117209 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#40 0x0111765a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#41 0x0111b84f in QCoreApplication::exec() () from /usr/lib/libQtCore.so.4
#42 0x05290467 in QApplication::exec() () from /usr/lib/libQtGui.so.4
#43 0x018a280d in kdemain () from /usr/lib/libkdeinit4_plasma-desktop.so
#44 0x0804dff7 in _start ()

Possible duplicates by query: bug 233169, bug 233037, bug 232446, bug 232238, bug 232146.

Reported using DrKonqi