Application: plasma-desktop (0.4)
KDE Platform Version: 4.7.2 (4.7.2)
Qt Version: 4.7.4
Operating System: Linux 3.0.0-13-generic x86_64
Distribution: Ubuntu 11.10

-- Information about the crash:
- Unusual behavior I noticed:

Sometimes, waking up from an hibernate state, the task manager gets close and I need to manually add it again to the bar at the bottom of the screen (Sorry I don know the name). I have seen this behaviour four times. This reports comes up from the last time.

The crash can be reproduced some of the time.

-- Backtrace:
Application: Shell de escritorio Plasma (plasma-desktop), signal: Segmentation fault
[Current thread is 1 (Thread 0x7f3f1ccff7a0 (LWP 1519))]

Thread 3 (Thread 0x7f3ef993b700 (LWP 1522)):
#0  0x00007f3f1c5d3773 in __GI___poll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007f3f10b5ef68 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f3f10b5f429 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f3f197c5f3e in QEventDispatcherGlib::processEvents (this=0x15461a0, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:424
#4  0x00007f3f19799cf2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007f3f19799ef7 in QEventLoop::exec (this=0x7f3ef993adb0, flags=...) at kernel/qeventloop.cpp:201
#6  0x00007f3f196b127f in QThread::exec (this=<optimized out>) at thread/qthread.cpp:498
#7  0x00007f3f1977ccbf in QInotifyFileSystemWatcherEngine::run (this=0x1543790) at io/qfilesystemwatcher_inotify.cpp:248
#8  0x00007f3f196b3d05 in QThreadPrivate::start (arg=0x1543790) at thread/qthread_unix.cpp:331
#9  0x00007f3f1166befc in start_thread (arg=0x7f3ef993b700) at pthread_create.c:304
#10 0x00007f3f1c5df89d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7f3ef2d60700 (LWP 1523)):
#0  0x00007f3f10b5ef9a in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f3f10b5f429 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f3f197c5f3e in QEventDispatcherGlib::processEvents (this=0x175a830, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:424
#3  0x00007f3f19799cf2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#4  0x00007f3f19799ef7 in QEventLoop::exec (this=0x7f3ef2d5fdb0, flags=...) at kernel/qeventloop.cpp:201
#5  0x00007f3f196b127f in QThread::exec (this=<optimized out>) at thread/qthread.cpp:498
#6  0x00007f3f1977ccbf in QInotifyFileSystemWatcherEngine::run (this=0x1759b10) at io/qfilesystemwatcher_inotify.cpp:248
#7  0x00007f3f196b3d05 in QThreadPrivate::start (arg=0x1759b10) at thread/qthread_unix.cpp:331
#8  0x00007f3f1166befc in start_thread (arg=0x7f3ef2d60700) at pthread_create.c:304
#9  0x00007f3f1c5df89d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#10 0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f3f1ccff7a0 (LWP 1519)):
[KCrash Handler]
#6  QGraphicsLayoutItemPrivate::hasHeightForWidth (this=0x740065006e002e) at graphicsview/qgraphicslayoutitem.cpp:280
#7  0x00007f3f19172591 in QGridLayoutItem::hasDynamicConstraint (this=<optimized out>) at graphicsview/qgridlayoutengine.cpp:576
#8  0x00007f3f191736b2 in ensureDynamicConstraint (this=0x3336ab0) at graphicsview/qgridlayoutengine.cpp:1657
#9  QGridLayoutEngine::ensureDynamicConstraint (this=0x3336ab0) at graphicsview/qgridlayoutengine.cpp:1652
#10 0x00007f3f19173769 in QGridLayoutEngine::hasDynamicConstraint (this=0x3336ab0) at graphicsview/qgridlayoutengine.cpp:1677
#11 0x00007f3f19177a98 in QGridLayoutEngine::sizeHint (this=0x3336ab0, styleInfo=..., which=Qt::MaximumSize, constraint=...) at graphicsview/qgridlayoutengine.cpp:1134
#12 0x00007f3f1910101a in QGraphicsGridLayout::sizeHint (this=<optimized out>, which=Qt::MaximumSize, constraint=...) at graphicsview/qgraphicsgridlayout.cpp:656
#13 0x00007f3f1912bbd9 in QGraphicsLayoutItemPrivate::effectiveSizeHints (this=0x33369a0, constraint=...) at graphicsview/qgraphicslayoutitem.cpp:169
#14 0x00007f3f1912c491 in effectiveSizeHint (constraint=<optimized out>, which=<optimized out>, this=<optimized out>) at graphicsview/qgraphicslayoutitem.cpp:818
#15 QGraphicsLayoutItem::effectiveSizeHint (this=<optimized out>, which=<optimized out>, constraint=<optimized out>) at graphicsview/qgraphicslayoutitem.cpp:810
#16 0x00007f3f19169231 in QGraphicsWidget::sizeHint (this=<optimized out>, which=<optimized out>, constraint=<optimized out>) at graphicsview/qgraphicswidget.cpp:743
#17 0x00007f3f1912bcaf in QGraphicsLayoutItemPrivate::effectiveSizeHints (this=0x2a883c0, constraint=...) at graphicsview/qgraphicslayoutitem.cpp:175
#18 0x00007f3f1912c491 in effectiveSizeHint (constraint=<optimized out>, which=<optimized out>, this=<optimized out>) at graphicsview/qgraphicslayoutitem.cpp:818
#19 QGraphicsLayoutItem::effectiveSizeHint (this=<optimized out>, which=<optimized out>, constraint=<optimized out>) at graphicsview/qgraphicslayoutitem.cpp:810
#20 0x00007f3f02221905 in SystemTray::TaskArea::adjustHiddentTasksWidget (this=0x330b2e0) at ../../../../../plasma/generic/applets/systemtray/ui/taskarea.cpp:452
#21 0x00007f3f022235d9 in SystemTray::TaskArea::addWidgetForTask (this=0x330b2e0, task=0x3bb95f0) at ../../../../../plasma/generic/applets/systemtray/ui/taskarea.cpp:320
#22 0x00007f3f02223926 in SystemTray::TaskArea::addTask (this=0x330b2e0, task=<optimized out>) at ../../../../../plasma/generic/applets/systemtray/ui/taskarea.cpp:196
#23 0x00007f3f02224124 in SystemTray::TaskArea::qt_metacall (this=0x330b2e0, _c=QMetaObject::InvokeMetaMethod, _id=<optimized out>, _a=0x7fff0466a680) at ./taskarea.moc:89
#24 0x00007f3f197adeba in QMetaObject::activate (sender=0xfc6870, m=<optimized out>, local_signal_index=<optimized out>, argv=0x7fff0466a680) at kernel/qobject.cpp:3278
#25 0x00007f3f0220687f in SystemTray::Manager::taskAdded (this=<optimized out>, _t1=0x3bb95f0) at ./manager.moc:99
#26 0x00007f3f02206a95 in SystemTray::Manager::addTask (this=0xfc6870, task=0x3bb95f0) at ../../../../../plasma/generic/applets/systemtray/core/manager.cpp:87
#27 0x00007f3f02206be4 in SystemTray::Manager::qt_metacall (this=0xfc6870, _c=QMetaObject::InvokeMetaMethod, _id=<optimized out>, _a=0x7fff0466a7f0) at ./manager.moc:86
#28 0x00007f3f197adeba in QMetaObject::activate (sender=0xfbdde0, m=<optimized out>, local_signal_index=<optimized out>, argv=0x7fff0466a7f0) at kernel/qobject.cpp:3278
#29 0x00007f3f0220708f in SystemTray::Protocol::taskCreated (this=<optimized out>, _t1=0x3bb95f0) at ./protocol.moc:91
#30 0x00007f3f0220e178 in SystemTray::PlasmoidProtocol::addApplet (this=0xfbdde0, appletName=..., id=<optimized out>, parent=0x3b1c7e0) at ../../../../../plasma/generic/applets/systemtray/protocols/plasmoid/plasmoidtaskprotocol.cpp:112
#31 0x00007f3f022066d6 in SystemTray::Manager::addApplet (this=<optimized out>, appletName=<optimized out>, parent=<optimized out>) at ../../../../../plasma/generic/applets/systemtray/core/manager.cpp:110
#32 0x00007f3f02218a30 in SystemTray::Applet::checkDefaultApplets (this=0x3b1c7e0) at ../../../../../plasma/generic/applets/systemtray/ui/applet.cpp:737
#33 0x00007f3f02219a4c in SystemTray::Applet::qt_metacall (this=0x3b1c7e0, _c=QMetaObject::InvokeMetaMethod, _id=<optimized out>, _a=0x381c740) at ./applet.moc:91
#34 0x00007f3f197b1a5e in QObject::event (this=0x3b1c7e0, e=<optimized out>) at kernel/qobject.cpp:1217
#35 0x00007f3f1916989b in QGraphicsWidget::event (this=0x3b1c7e0, event=0x2862870) at graphicsview/qgraphicswidget.cpp:1455
#36 0x00007f3f18b4b424 in notify_helper (e=0x2862870, receiver=0x3b1c7e0, this=0xa79ce0) at kernel/qapplication.cpp:4486
#37 QApplicationPrivate::notify_helper (this=0xa79ce0, receiver=0x3b1c7e0, e=0x2862870) at kernel/qapplication.cpp:4458
#38 0x00007f3f18b50291 in QApplication::notify (this=0xa57210, receiver=0x3b1c7e0, e=0x2862870) at kernel/qapplication.cpp:4365
#39 0x00007f3f1a449126 in KApplication::notify (this=0xa57210, receiver=0x3b1c7e0, event=0x2862870) at ../../kdeui/kernel/kapplication.cpp:311
#40 0x00007f3f1979aafc in QCoreApplication::notifyInternal (this=0xa57210, receiver=0x3b1c7e0, event=0x2862870) at kernel/qcoreapplication.cpp:787
#41 0x00007f3f1979e51f in sendEvent (event=0x2862870, receiver=0x3b1c7e0) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#42 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x9fd430) at kernel/qcoreapplication.cpp:1428
#43 0x00007f3f197c5a73 in sendPostedEvents () at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:220
#44 postEventSourceDispatch (s=<optimized out>) at kernel/qeventdispatcher_glib.cpp:277
#45 0x00007f3f10b5ea5d in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#46 0x00007f3f10b5f258 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#47 0x00007f3f10b5f429 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#48 0x00007f3f197c5ed6 in QEventDispatcherGlib::processEvents (this=0x9fef40, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:422
#49 0x00007f3f18bf307e in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=<optimized out>) at kernel/qguieventdispatcher_glib.cpp:204
#50 0x00007f3f19799cf2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#51 0x00007f3f19799ef7 in QEventLoop::exec (this=0x7fff0466b250, flags=...) at kernel/qeventloop.cpp:201
#52 0x00007f3f1979e789 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1064
#53 0x00007f3f1c8de1a3 in kdemain (argc=1, argv=0x7fff0466b638) at ../../../../plasma/desktop/shell/main.cpp:120
#54 0x00007f3f1c51f30d in __libc_start_main (main=0x400640 <main(int, char**)>, argc=1, ubp_av=0x7fff0466b638, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fff0466b628) at libc-start.c:226
#55 0x0000000000400671 in _start ()

Possible duplicates by query: bug 287909, bug 287885, bug 287802, bug 287756, bug 287632.

Reported using DrKonqi