Application: plasma-desktop (0.4)
KDE Platform Version: 4.7.2 (4.7.2)
Qt Version: 4.7.4
Operating System: Linux 3.0.0-12-generic x86_64
Distribution: Ubuntu 11.10

-- Information about the crash:
- What I was doing when the application crashed:

I've just logged into KDE. Then added a new activity and tried to add a panel to it.

- Unusual behavior I noticed:

After logging in (I see the KDE loading animation, starting with disk and 3 other glyphs get resized finished by the big K) hearing the "logged in" sound clip nothing shows other than the background. I can use the mouse (right click brings out the context menu), pressing alt-tab brings out expose (small tiled windows) but after selecting any window expose just fades out and I'm stuck with the background again.

This doesn't happen with a new user's profile.  My profile started out as a Gnome one with ubuntu 11.04.

Adding the Activities panel, stopping and starting and tinkering with activities somehow breaks this curse.

The crashing is new, all the other is already happened a few times.

-- Backtrace:
Application: Plasma Desktop Shell (plasma-desktop), signal: Segmentation fault
[Current thread is 1 (Thread 0x7fe3cdbe77a0 (LWP 1501))]

Thread 4 (Thread 0x7fe3aab34700 (LWP 1504)):
#0  0xffffffffff60017b in ?? ()
#1  0x00007fe3aab33ad0 in ?? ()
#2  0x00007fffe0c877e7 in ?? ()
Backtrace stopped: previous frame identical to this frame (corrupt stack?)

Thread 3 (Thread 0x7fe3a80a5700 (LWP 1506)):
#0  QElapsedTimer::isMonotonic () at tools/qelapsedtimer_unix.cpp:106
#1  0x00007fe3ca6c19ed in QTimerInfoList::repairTimersIfNeeded (this=0x7fe3a0001da0) at kernel/qeventdispatcher_unix.cpp:395
#2  0x00007fe3ca6c1a51 in QTimerInfoList::timerWait (this=0x7fe3a0001da0, tm=...) at kernel/qeventdispatcher_unix.cpp:443
#3  0x00007fe3ca6c044c in timerSourcePrepareHelper (src=<optimized out>, timeout=0x7fe3a80a4c1c) at kernel/qeventdispatcher_glib.cpp:136
#4  0x00007fe3ca6c04f5 in timerSourcePrepare (source=<optimized out>, timeout=<optimized out>) at kernel/qeventdispatcher_glib.cpp:169
#5  0x00007fe3c1a58ff2 in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007fe3c1a59dfd in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#7  0x00007fe3c1a5a429 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#8  0x00007fe3ca6c0f3e in QEventDispatcherGlib::processEvents (this=0x22e0f10, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:424
#9  0x00007fe3ca694cf2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#10 0x00007fe3ca694ef7 in QEventLoop::exec (this=0x7fe3a80a4db0, flags=...) at kernel/qeventloop.cpp:201
#11 0x00007fe3ca5ac27f in QThread::exec (this=<optimized out>) at thread/qthread.cpp:498
#12 0x00007fe3ca677cbf in QInotifyFileSystemWatcherEngine::run (this=0x22e0460) at io/qfilesystemwatcher_inotify.cpp:248
#13 0x00007fe3ca5aed05 in QThreadPrivate::start (arg=0x22e0460) at thread/qthread_unix.cpp:331
#14 0x00007fe3c2566efc in start_thread (arg=0x7fe3a80a5700) at pthread_create.c:304
#15 0x00007fe3cd4da89d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#16 0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7fe39ed7b700 (LWP 2300)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007fe3c76c5fe2 in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#2  0x00007fe3c76c6019 in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#3  0x00007fe3c2566efc in start_thread (arg=0x7fe39ed7b700) at pthread_create.c:304
#4  0x00007fe3cd4da89d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#5  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7fe3cdbe77a0 (LWP 1501)):
[KCrash Handler]
#6  0x00007fe3ca027844 in QGraphicsLayoutItem::graphicsItem (this=0x2d1ab60) at graphicsview/qgraphicslayoutitem.cpp:920
#7  0x00007fe3ca0278f1 in QGraphicsLayoutItemPrivate::hasHeightForWidth (this=<optimized out>) at graphicsview/qgraphicslayoutitem.cpp:286
#8  0x00007fe3ca06d591 in QGridLayoutItem::hasDynamicConstraint (this=<optimized out>) at graphicsview/qgridlayoutengine.cpp:576
#9  0x00007fe3ca06e6b2 in ensureDynamicConstraint (this=0x40fb360) at graphicsview/qgridlayoutengine.cpp:1657
#10 QGridLayoutEngine::ensureDynamicConstraint (this=0x40fb360) at graphicsview/qgridlayoutengine.cpp:1652
#11 0x00007fe3ca06e769 in QGridLayoutEngine::hasDynamicConstraint (this=0x40fb360) at graphicsview/qgridlayoutengine.cpp:1677
#12 0x00007fe3ca072a98 in QGridLayoutEngine::sizeHint (this=0x40fb360, styleInfo=..., which=Qt::MaximumSize, constraint=...) at graphicsview/qgridlayoutengine.cpp:1134
#13 0x00007fe3c9ffc01a in QGraphicsGridLayout::sizeHint (this=<optimized out>, which=Qt::MaximumSize, constraint=...) at graphicsview/qgraphicsgridlayout.cpp:656
#14 0x00007fe3ca026bd9 in QGraphicsLayoutItemPrivate::effectiveSizeHints (this=0x40fb250, constraint=...) at graphicsview/qgraphicslayoutitem.cpp:169
#15 0x00007fe3ca027491 in effectiveSizeHint (constraint=<optimized out>, which=<optimized out>, this=<optimized out>) at graphicsview/qgraphicslayoutitem.cpp:818
#16 QGraphicsLayoutItem::effectiveSizeHint (this=<optimized out>, which=<optimized out>, constraint=<optimized out>) at graphicsview/qgraphicslayoutitem.cpp:810
#17 0x00007fe3ca064231 in QGraphicsWidget::sizeHint (this=<optimized out>, which=<optimized out>, constraint=<optimized out>) at graphicsview/qgraphicswidget.cpp:743
#18 0x00007fe3ca026caf in QGraphicsLayoutItemPrivate::effectiveSizeHints (this=0x40fb160, constraint=...) at graphicsview/qgraphicslayoutitem.cpp:175
#19 0x00007fe3ca027491 in effectiveSizeHint (constraint=<optimized out>, which=<optimized out>, this=<optimized out>) at graphicsview/qgraphicslayoutitem.cpp:818
#20 QGraphicsLayoutItem::effectiveSizeHint (this=<optimized out>, which=<optimized out>, constraint=<optimized out>) at graphicsview/qgraphicslayoutitem.cpp:810
#21 0x00007fe3b2e69905 in SystemTray::TaskArea::adjustHiddentTasksWidget (this=0x4137760) at ../../../../../plasma/generic/applets/systemtray/ui/taskarea.cpp:452
#22 0x00007fe3b2e6b5d9 in SystemTray::TaskArea::addWidgetForTask (this=0x4137760, task=0x4911200) at ../../../../../plasma/generic/applets/systemtray/ui/taskarea.cpp:320
#23 0x00007fe3b2e6b926 in SystemTray::TaskArea::addTask (this=0x4137760, task=<optimized out>) at ../../../../../plasma/generic/applets/systemtray/ui/taskarea.cpp:196
#24 0x00007fe3b2e6c124 in SystemTray::TaskArea::qt_metacall (this=0x4137760, _c=QMetaObject::InvokeMetaMethod, _id=<optimized out>, _a=0x7fffe0c6ff00) at ./taskarea.moc:89
#25 0x00007fe3ca6a8eba in QMetaObject::activate (sender=0x1995cd0, m=<optimized out>, local_signal_index=<optimized out>, argv=0x7fffe0c6ff00) at kernel/qobject.cpp:3278
#26 0x00007fe3b2e4e87f in SystemTray::Manager::taskAdded (this=<optimized out>, _t1=0x4911200) at ./manager.moc:99
#27 0x00007fe3b2e4ea95 in SystemTray::Manager::addTask (this=0x1995cd0, task=0x4911200) at ../../../../../plasma/generic/applets/systemtray/core/manager.cpp:87
#28 0x00007fe3b2e4ebe4 in SystemTray::Manager::qt_metacall (this=0x1995cd0, _c=QMetaObject::InvokeMetaMethod, _id=<optimized out>, _a=0x7fffe0c70070) at ./manager.moc:86
#29 0x00007fe3ca6a8eba in QMetaObject::activate (sender=0x1994e80, m=<optimized out>, local_signal_index=<optimized out>, argv=0x7fffe0c70070) at kernel/qobject.cpp:3278
#30 0x00007fe3b2e4f08f in SystemTray::Protocol::taskCreated (this=<optimized out>, _t1=0x4911200) at ./protocol.moc:91
#31 0x00007fe3b2e56178 in SystemTray::PlasmoidProtocol::addApplet (this=0x1994e80, appletName=..., id=<optimized out>, parent=0x4132990) at ../../../../../plasma/generic/applets/systemtray/protocols/plasmoid/plasmoidtaskprotocol.cpp:112
#32 0x00007fe3b2e4e6d6 in SystemTray::Manager::addApplet (this=<optimized out>, appletName=<optimized out>, parent=<optimized out>) at ../../../../../plasma/generic/applets/systemtray/core/manager.cpp:110
#33 0x00007fe3b2e60a30 in SystemTray::Applet::checkDefaultApplets (this=0x4132990) at ../../../../../plasma/generic/applets/systemtray/ui/applet.cpp:737
#34 0x00007fe3b2e61a4c in SystemTray::Applet::qt_metacall (this=0x4132990, _c=QMetaObject::InvokeMetaMethod, _id=<optimized out>, _a=0x43adf10) at ./applet.moc:91
#35 0x00007fe3ca6aca5e in QObject::event (this=0x4132990, e=<optimized out>) at kernel/qobject.cpp:1217
#36 0x00007fe3ca06489b in QGraphicsWidget::event (this=0x4132990, event=0x41445f0) at graphicsview/qgraphicswidget.cpp:1455
#37 0x00007fe3c9a46424 in notify_helper (e=0x41445f0, receiver=0x4132990, this=0x16c79c0) at kernel/qapplication.cpp:4486
#38 QApplicationPrivate::notify_helper (this=0x16c79c0, receiver=0x4132990, e=0x41445f0) at kernel/qapplication.cpp:4458
#39 0x00007fe3c9a4b291 in QApplication::notify (this=0x16a9f00, receiver=0x4132990, e=0x41445f0) at kernel/qapplication.cpp:4365
#40 0x00007fe3cb344126 in KApplication::notify (this=0x16a9f00, receiver=0x4132990, event=0x41445f0) at ../../kdeui/kernel/kapplication.cpp:311
#41 0x00007fe3ca695afc in QCoreApplication::notifyInternal (this=0x16a9f00, receiver=0x4132990, event=0x41445f0) at kernel/qcoreapplication.cpp:787
#42 0x00007fe3ca69951f in sendEvent (event=0x41445f0, receiver=0x4132990) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#43 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x164e430) at kernel/qcoreapplication.cpp:1428
#44 0x00007fe3ca6c0a73 in sendPostedEvents () at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:220
#45 postEventSourceDispatch (s=<optimized out>) at kernel/qeventdispatcher_glib.cpp:277
#46 0x00007fe3c1a59a5d in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#47 0x00007fe3c1a5a258 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#48 0x00007fe3c1a5a429 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#49 0x00007fe3ca6c0ed6 in QEventDispatcherGlib::processEvents (this=0x16c3180, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:422
#50 0x00007fe3c9aee07e in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=<optimized out>) at kernel/qguieventdispatcher_glib.cpp:204
#51 0x00007fe3ca694cf2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#52 0x00007fe3ca694ef7 in QEventLoop::exec (this=0x7fffe0c70ad0, flags=...) at kernel/qeventloop.cpp:201
#53 0x00007fe3ca699789 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1064
#54 0x00007fe3cd7d91a3 in kdemain (argc=1, argv=0x7fffe0c70eb8) at ../../../../plasma/desktop/shell/main.cpp:120
#55 0x00007fe3cd41a30d in __libc_start_main (main=0x400640 <main(int, char**)>, argc=1, ubp_av=0x7fffe0c70eb8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fffe0c70ea8) at libc-start.c:226
#56 0x0000000000400671 in _start ()

Possible duplicates by query: bug 286242, bug 286181, bug 285926, bug 285494, bug 285361.

Reported using DrKonqi