Application: plasma-desktop (0.3)
KDE Platform Version: 4.5.2 (KDE 4.5.2)
Qt Version: 4.7.0
Operating System: Linux 2.6.35-ARCH x86_64
Distribution (Platform): Archlinux Packages

-- Information about the crash:
- What I was doing when the application crashed:
After log-in, all the windows are hidden by plasma and panel too. Switching with alt+tab show only windows border and the window list. To show all windows, I have to right click and add plasmoïd. 
In system settings, I have to choose the plasma for netbook after I have to switch bach to desktop. 

- Custom settings of the application:
Using KDE from Archlinux, the ati driver from xorg, a dual screen setting and I disable desktop effects

The crash can be reproduced every time.

-- Backtrace:
Application: Espace de travail Plasma (plasma-desktop), signal: Segmentation fault
[Current thread is 1 (Thread 0x7fb0913a2780 (LWP 2065))]

Thread 4 (Thread 0x7fb073ca2710 (LWP 2068)):
#0  0x00007fb08dffd779 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib/libpthread.so.0
#1  0x00007fb08e281af2 in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib/libQtCore.so.4
#2  0x00007fb08e277b78 in ?? () from /usr/lib/libQtCore.so.4
#3  0x00007fb08e28149e in ?? () from /usr/lib/libQtCore.so.4
#4  0x00007fb08dff8cb0 in start_thread () from /lib/libpthread.so.0
#5  0x00007fb090cc69fd in clone () from /lib/libc.so.6
#6  0x0000000000000000 in ?? ()

Thread 3 (Thread 0x7fb06fc0d710 (LWP 2073)):
#0  0x00007fb090cc02f3 in select () from /lib/libc.so.6
#1  0x00007fb08e34a30d in ?? () from /usr/lib/libQtCore.so.4
#2  0x00007fb08e28149e in ?? () from /usr/lib/libQtCore.so.4
#3  0x00007fb08dff8cb0 in start_thread () from /lib/libpthread.so.0
#4  0x00007fb090cc69fd in clone () from /lib/libc.so.6
#5  0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7fb06f200710 (LWP 2077)):
#0  0x00007fb08dffd779 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib/libpthread.so.0
#1  0x00007fb08e281af2 in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib/libQtCore.so.4
#2  0x00007fb08e277b78 in ?? () from /usr/lib/libQtCore.so.4
#3  0x00007fb08e28149e in ?? () from /usr/lib/libQtCore.so.4
#4  0x00007fb08dff8cb0 in start_thread () from /lib/libpthread.so.0
#5  0x00007fb090cc69fd in clone () from /lib/libc.so.6
#6  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7fb0913a2780 (LWP 2065)):
[KCrash Handler]
#6  0x00007fb08dafa467 in QGraphicsLayoutItem::geometry() const () from /usr/lib/libQtGui.so.4
#7  0x00007fb08db367f5 in QGraphicsWidget::size() const () from /usr/lib/libQtGui.so.4
#8  0x00007fb090f80594 in ?? () from /usr/lib/libkdeinit4_plasma-desktop.so
#9  0x00007fb090f810b8 in ?? () from /usr/lib/libkdeinit4_plasma-desktop.so
#10 0x00007fb08e37f2ff in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib/libQtCore.so.4
#11 0x00007fb08e37de89 in QObject::event(QEvent*) () from /usr/lib/libQtCore.so.4
#12 0x00007fb08d51d564 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#13 0x00007fb08d521fda in QApplication::notify(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#14 0x00007fb08efef1f6 in KApplication::notify(QObject*, QEvent*) () from /usr/lib/libkdeui.so.5
#15 0x00007fb08e369eac in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib/libQtCore.so.4
#16 0x00007fb08e397a22 in ?? () from /usr/lib/libQtCore.so.4
#17 0x00007fb08e394858 in ?? () from /usr/lib/libQtCore.so.4
#18 0x00007fb086281bf3 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#19 0x00007fb0862823d0 in ?? () from /usr/lib/libglib-2.0.so.0
#20 0x00007fb08628266d in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#21 0x00007fb08e394f1f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#22 0x00007fb08d5c129e in ?? () from /usr/lib/libQtGui.so.4
#23 0x00007fb08e369242 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#24 0x00007fb08e36948c in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#25 0x00007fb08e36d94b in QCoreApplication::exec() () from /usr/lib/libQtCore.so.4
#26 0x00007fb090f8cddb in kdemain () from /usr/lib/libkdeinit4_plasma-desktop.so
#27 0x00007fb090c16c4d in __libc_start_main () from /lib/libc.so.6
#28 0x00000000004005d9 in _start ()

Possible duplicates by query: bug 254176, bug 254157, bug 254139, bug 254128, bug 254113.

Reported using DrKonqi