Application: plasma-desktop (0.4)
KDE Platform Version: 4.10.00
Qt Version: 4.8.4
Operating System: Linux 3.7.6-1-CHAKRA x86_64
Distribution: "Chakra"

-- Information about the crash:
- What I was doing when the application crashed:
Occationally, after clicked poweroff/reboot/logout, screen become black and and a bug dialog appears, preventing the system to halt/reboot/logout; the error says that plasma desktop crashed.

The crash can be reproduced some of the time.

-- Backtrace:
Application: Shell del desktop di Plasma (kdeinit4), signal: Segmentation fault
[Current thread is 1 (Thread 0x7f08ad9f5780 (LWP 533))]

Thread 2 (Thread 0x7f0803327700 (LWP 540)):
#0  0x00007f08b29960fd in read () from /lib/libc.so.6
#1  0x00007f08a2dee0dc in ?? () from /usr/lib/libGL.so.1
#2  0x00007f08a15b6b27 in ?? () from /usr/lib/libnvidia-tls.so.313.18
#3  0x00007f08af8daecf in ?? () from /usr/lib/libglib-2.0.so.0
#4  0x00007f08af89fcfa in g_main_context_check () from /usr/lib/libglib-2.0.so.0
#5  0x00007f08af8a0202 in ?? () from /usr/lib/libglib-2.0.so.0
#6  0x00007f08af8a0384 in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#7  0x00007f08b407ffb6 in QEventDispatcherGlib::processEvents (this=0x7f07fc0008e0, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:426
#8  0x00007f08b404cd2f in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#9  0x00007f08b404cf88 in QEventLoop::exec (this=0x7f0803326d00, flags=...) at kernel/qeventloop.cpp:204
#10 0x00007f08b3f4176d in QThread::exec (this=<optimized out>) at thread/qthread.cpp:542
#11 0x00007f08b402bc33 in QInotifyFileSystemWatcherEngine::run (this=0x2a474a0) at io/qfilesystemwatcher_inotify.cpp:256
#12 0x00007f08b3f44519 in QThreadPrivate::start (arg=0x2a474a0) at thread/qthread_unix.cpp:338
#13 0x00007f08a2def124 in ?? () from /usr/lib/libGL.so.1
#14 0x00007f08b3cb1e0e in start_thread () from /lib/libpthread.so.0
#15 0x00007f08b29a21dd in clone () from /lib/libc.so.6

Thread 1 (Thread 0x7f08ad9f5780 (LWP 533)):
[KCrash Handler]
#6  0x0000000000000000 in ?? ()
#7  0x00007f08b40551e9 in QMetaObject::cast (this=0x7f08b3c8e740, obj=0x694c180) at kernel/qmetaobject.cpp:274
#8  0x00007f08b37b09f5 in qt_static_metacall (_a=0x6843656c62697369, _id=1, _o=<optimized out>, _c=<optimized out>) at .moc/debug-shared/moc_qgraphicsview.cpp:117
#9  QGraphicsView::qt_static_metacall (_o=0x694c180, _c=<optimized out>, _id=1, _a=0x6843656c62697369) at .moc/debug-shared/moc_qgraphicsview.cpp:114
#10 0x00007f080b215a43 in DialogProxy::~DialogProxy (this=0x4feeb40, __in_chrg=<optimized out>) at /chakra/desktop-unstable/kde-runtime/src/kde-runtime-4.10.0/plasma/declarativeimports/core/dialog.cpp:106
#11 0x00007f080b204b21 in ~QDeclarativeElement (this=0x4feeb40, __in_chrg=<optimized out>) at /usr/include/QtDeclarative/qdeclarativeprivate.h:87
#12 QDeclarativePrivate::QDeclarativeElement<DialogProxy>::~QDeclarativeElement (this=0x4feeb40, __in_chrg=<optimized out>) at /usr/include/QtDeclarative/qdeclarativeprivate.h:87
#13 0x00007f08b375d9fe in QGraphicsItem::~QGraphicsItem (this=0x677bbd0, __in_chrg=<optimized out>) at graphicsview/qgraphicsitem.cpp:1493
#14 0x00007f08a5c7383a in ~QGraphicsObject (this=0x677bbc0, __in_chrg=<optimized out>) at ../../include/QtGui/../../src/gui/graphicsview/qgraphicsitem.h:547
#15 QDeclarativeItem::~QDeclarativeItem (this=0x677bbc0, __in_chrg=<optimized out>) at graphicsitems/qdeclarativeitem.cpp:1660
#16 0x00007f08a5c3614e in ~QDeclarativeElement (this=0x677bbc0, __in_chrg=<optimized out>) at ../../include/QtDeclarative/../../src/declarative/qml/qdeclarativeprivate.h:87
#17 QDeclarativePrivate::QDeclarativeElement<QDeclarativeItem>::~QDeclarativeElement (this=0x677bbc0, __in_chrg=<optimized out>) at ../../include/QtDeclarative/../../src/declarative/qml/qdeclarativeprivate.h:87
#18 0x00007f08b4065398 in QObject::event (this=0x677bbc0, e=<optimized out>) at kernel/qobject.cpp:1175
#19 0x00007f08b312e021 in QApplicationPrivate::notify_helper (this=0xdcac70, receiver=0x677bbc0, e=0x1088850) at kernel/qapplication.cpp:4562
#20 0x00007f08b31330f9 in QApplication::notify (this=0xd77ce0, receiver=0x677bbc0, e=0x1088850) at kernel/qapplication.cpp:4423
#21 0x00007f08b4e09256 in KApplication::notify (this=0xd77ce0, receiver=0x677bbc0, event=0x1088850) at /chakra/desktop-unstable/kdelibs/src/kdelibs-4.10.0/kdeui/kernel/kapplication.cpp:311
#22 0x00007f08b404e7ee in QCoreApplication::notifyInternal (this=0xd77ce0, receiver=0x677bbc0, event=0x1088850) at kernel/qcoreapplication.cpp:946
#23 0x00007f08b4052198 in sendEvent (event=0x1088850, receiver=0x677bbc0) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#24 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=52, data=0xc2e2b0) at kernel/qcoreapplication.cpp:1570
#25 0x00007f08b40525df in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1225
#26 0x00007f089d21d0a1 in kdemain (argc=1, argv=0xc2f770) at /chakra/desktop-testing/kde-workspace/src/kde-workspace-4.10.0/plasma/desktop/shell/main.cpp:126
#27 0x0000000000407fdb in launch (argc=1, _name=0xcd4938 "/usr/bin/plasma-desktop", args=0xcd4950 "", cwd=0x0, envc=0, envs=<optimized out>, reset_env=false, tty=0x0, avoid_loops=false, startup_id_str=0x40a7da "0") at /chakra/desktop-unstable/kdelibs/src/kdelibs-4.10.0/kinit/kinit.cpp:726
#28 0x0000000000408e2b in handle_launcher_request (sock=8, who=) at /chakra/desktop-unstable/kdelibs/src/kdelibs-4.10.0/kinit/kinit.cpp:1218
#29 0x0000000000409485 in handle_requests (waitForPid=0) at /chakra/desktop-unstable/kdelibs/src/kdelibs-4.10.0/kinit/kinit.cpp:1411
#30 0x0000000000405117 in main (argc=4, argv=<optimized out>, envp=0x7ffff2d0c000) at /chakra/desktop-unstable/kdelibs/src/kdelibs-4.10.0/kinit/kinit.cpp:1899

Reported using DrKonqi