Version:            (using KDE 4.2.0)
OS:                Linux
Installed from:    Ubuntu Packages

after i changed values in nvidia-settings like antialiasing etc. the plasma desktop went black for a few seconds, but it started again successfully

my system:

samsung r700
kubuntu 8.10 with ppa from launchpad (kubuntu-experimental)
2.6.27-11-generic
Nvidia 8600GT with 180.27 BETA driver

good luck and thanks for developing KDE!!


####Bugreport####

Anwendung: Plasma-Arbeitsfläche (plasma), Signal SIGSEGV
0x00007fc35cf74621 in nanosleep () from /lib/libc.so.6
[Current thread is 0 (LWP 5869)]

Thread 6 (Thread 0x41d26950 (LWP 5889)):
#0  0x00007fc35aa9c2d9 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/libpthread.so.0
#1  0x00007fc35da55349 in QWaitCondition::wait () from /usr/lib/libQtCore.so.4
#2  0x00007fc3610f429c in ?? () from /usr/lib/libQtNetwork.so.4
#3  0x00007fc35da54362 in ?? () from /usr/lib/libQtCore.so.4
#4  0x00007fc35aa983ea in start_thread () from /lib/libpthread.so.0
#5  0x00007fc35cfb2c6d in clone () from /lib/libc.so.6
#6  0x0000000000000000 in ?? ()

Thread 5 (Thread 0x40ff3950 (LWP 5890)):
#0  0x00007fc35cfab482 in select () from /lib/libc.so.6
#1  0x00007fc35db1d006 in ?? () from /usr/lib/libQtCore.so.4
#2  0x00007fc35da54362 in ?? () from /usr/lib/libQtCore.so.4
#3  0x00007fc35aa983ea in start_thread () from /lib/libpthread.so.0
#4  0x00007fc35cfb2c6d in clone () from /lib/libc.so.6
#5  0x0000000000000000 in ?? ()

Thread 4 (Thread 0x42527950 (LWP 5892)):
#0  0x00007fc35aa9c2d9 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/libpthread.so.0
#1  0x00007fc35da55349 in QWaitCondition::wait () from /usr/lib/libQtCore.so.4
#2  0x00007fc344165760 in ?? () from /usr/lib/kde4/plasma_wallpaper_image.so
#3  0x00007fc35da54362 in ?? () from /usr/lib/libQtCore.so.4
#4  0x00007fc35aa983ea in start_thread () from /lib/libpthread.so.0
#5  0x00007fc35cfb2c6d in clone () from /lib/libc.so.6
#6  0x0000000000000000 in ?? ()

Thread 3 (Thread 0x43529950 (LWP 8703)):
#0  0x00007fc35aa9c2d9 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/libpthread.so.0
#1  0x00007fc35da55349 in QWaitCondition::wait () from /usr/lib/libQtCore.so.4
#2  0x00007fc35c07f5e4 in ?? () from /usr/lib/libthreadweaver.so.4
#3  0x00007fc35c081d93 in ?? () from /usr/lib/libthreadweaver.so.4
#4  0x00007fc35c08030f in ?? () from /usr/lib/libthreadweaver.so.4
#5  0x00007fc35c080769 in ThreadWeaver::Thread::run () from /usr/lib/libthreadweaver.so.4
#6  0x00007fc35da54362 in ?? () from /usr/lib/libQtCore.so.4
#7  0x00007fc35aa983ea in start_thread () from /lib/libpthread.so.0
#8  0x00007fc35cfb2c6d in clone () from /lib/libc.so.6
#9  0x0000000000000000 in ?? ()

Thread 2 (Thread 0x43d2a950 (LWP 8704)):
#0  0x00007fc35aa9c2d9 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/libpthread.so.0
#1  0x00007fc35da55349 in QWaitCondition::wait () from /usr/lib/libQtCore.so.4
#2  0x00007fc35c07f5e4 in ?? () from /usr/lib/libthreadweaver.so.4
#3  0x00007fc35c081d93 in ?? () from /usr/lib/libthreadweaver.so.4
#4  0x00007fc35c08030f in ?? () from /usr/lib/libthreadweaver.so.4
#5  0x00007fc35c080769 in ThreadWeaver::Thread::run () from /usr/lib/libthreadweaver.so.4
#6  0x00007fc35da54362 in ?? () from /usr/lib/libQtCore.so.4
#7  0x00007fc35aa983ea in start_thread () from /lib/libpthread.so.0
#8  0x00007fc35cfb2c6d in clone () from /lib/libc.so.6
#9  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7fc36248b730 (LWP 5869)):
[KCrash Handler]
#5  0x00007fc361deabee in ?? () from /usr/lib/libplasma.so.3
#6  0x00007fc361dd7fb1 in Plasma::Applet::focusInEvent () from /usr/lib/libplasma.so.3
#7  0x00007fc35e77bc06 in QGraphicsItem::sceneEvent () from /usr/lib/libQtGui.so.4
#8  0x00007fc35e79ad68 in QGraphicsScene::setFocusItem () from /usr/lib/libQtGui.so.4
#9  0x00007fc35e7a4011 in ?? () from /usr/lib/libQtGui.so.4
#10 0x00007fc35e7a2e10 in QGraphicsScene::event () from /usr/lib/libQtGui.so.4
#11 0x00007fc35e260c3d in QApplicationPrivate::notify_helper () from /usr/lib/libQtGui.so.4
#12 0x00007fc35e2689ba in QApplication::notify () from /usr/lib/libQtGui.so.4
#13 0x00007fc3608345db in KApplication::notify () from /usr/lib/libkdeui.so.5
#14 0x00007fc35db3cd61 in QCoreApplication::notifyInternal () from /usr/lib/libQtCore.so.4
#15 0x00007fc35e7ae9bd in QGraphicsView::mousePressEvent () from /usr/lib/libQtGui.so.4
#16 0x00007fc35e2b330f in QWidget::event () from /usr/lib/libQtGui.so.4
#17 0x00007fc35e7b09bb in QGraphicsView::viewportEvent () from /usr/lib/libQtGui.so.4
#18 0x00007fc35db3c038 in QCoreApplicationPrivate::sendThroughObjectEventFilters () from /usr/lib/libQtCore.so.4
#19 0x00007fc35e260c0c in QApplicationPrivate::notify_helper () from /usr/lib/libQtGui.so.4
#20 0x00007fc35e26922a in QApplication::notify () from /usr/lib/libQtGui.so.4
#21 0x00007fc3608345db in KApplication::notify () from /usr/lib/libkdeui.so.5
#22 0x00007fc35db3cd61 in QCoreApplication::notifyInternal () from /usr/lib/libQtCore.so.4
#23 0x00007fc35e2685c8 in QApplicationPrivate::sendMouseEvent () from /usr/lib/libQtGui.so.4
#24 0x00007fc35e2ccbe9 in ?? () from /usr/lib/libQtGui.so.4
#25 0x00007fc35e2cb607 in QApplication::x11ProcessEvent () from /usr/lib/libQtGui.so.4
#26 0x00007fc35e2f32c4 in ?? () from /usr/lib/libQtGui.so.4
#27 0x00007fc3590b6d3b in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#28 0x00007fc3590ba50d in ?? () from /usr/lib/libglib-2.0.so.0
#29 0x00007fc3590ba6cb in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#30 0x00007fc35db6515f in QEventDispatcherGlib::processEvents () from /usr/lib/libQtCore.so.4
#31 0x00007fc35e2f2a6f in ?? () from /usr/lib/libQtGui.so.4
#32 0x00007fc35db3b682 in QEventLoop::processEvents () from /usr/lib/libQtCore.so.4
#33 0x00007fc35db3b80d in QEventLoop::exec () from /usr/lib/libQtCore.so.4
#34 0x00007fc35db3dcbd in QCoreApplication::exec () from /usr/lib/libQtCore.so.4
#35 0x00007fc36215f66b in kdemain () from /usr/lib/libkdeinit4_plasma.so
#36 0x00007fc35ceea466 in __libc_start_main () from /lib/libc.so.6
#37 0x00000000004007c9 in _start ()