Application: plasma-desktop (0.4)
KDE Platform Version: 4.10.1 (Compiled from sources)
Qt Version: 4.8.2
Operating System: Linux 3.2.0-39-generic x86_64
Distribution: Ubuntu 12.04.2 LTS

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

Plasma crashes when switching from Activities Manager. But this is not systematic. In most cases, the switch is no problem.
Each "Activity-Plasma" have 3 Desktops.

At the time of the crash, only the application "KTorrent" was launched.

-- Backtrace:
Application: Outil de gestion de fenêtres Plasma (plasma-desktop), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7fb5f64bc780 (LWP 2418))]

Thread 5 (Thread 0x7fb5d5ee7700 (LWP 2421)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007fb5ef6bc222 in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#2  0x00007fb5ef6bc259 in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#3  0x00007fb5e9f52e9a in start_thread (arg=0x7fb5d5ee7700) at pthread_create.c:308
#4  0x00007fb5f5d9bcbd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#5  0x0000000000000000 in ?? ()

Thread 4 (Thread 0x7fb5cc824700 (LWP 2424)):
#0  0x00007fb5e9f54f69 in __pthread_mutex_lock (mutex=0x7fb5c8000a60) at pthread_mutex_lock.c:92
#1  0x00007fb5e98915a1 in g_mutex_lock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fb5e9855851 in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fb5e9855f5b in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fb5e9856164 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007fb5f2909926 in QEventDispatcherGlib::processEvents (this=0x7fb5c80008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#6  0x00007fb5f28d8e62 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#7  0x00007fb5f28d90b7 in QEventLoop::exec (this=0x7fb5cc823dd0, flags=...) at kernel/qeventloop.cpp:204
#8  0x00007fb5f27d8077 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:501
#9  0x00007fb5f28b8b6f in QInotifyFileSystemWatcherEngine::run (this=0x1277620) at io/qfilesystemwatcher_inotify.cpp:248
#10 0x00007fb5f27db09b in QThreadPrivate::start (arg=0x1277620) at thread/qthread_unix.cpp:307
#11 0x00007fb5e9f52e9a in start_thread (arg=0x7fb5cc824700) at pthread_create.c:308
#12 0x00007fb5f5d9bcbd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#13 0x0000000000000000 in ?? ()

Thread 3 (Thread 0x7fb5c7226700 (LWP 2425)):
#0  0x00007fb5f5d90303 in __GI___poll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007fb5e9856036 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fb5e9856164 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fb5f2909926 in QEventDispatcherGlib::processEvents (this=0x7fb5c00008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#4  0x00007fb5f28d8e62 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007fb5f28d90b7 in QEventLoop::exec (this=0x7fb5c7225dd0, flags=...) at kernel/qeventloop.cpp:204
#6  0x00007fb5f27d8077 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:501
#7  0x00007fb5f28b8b6f in QInotifyFileSystemWatcherEngine::run (this=0x203d5e0) at io/qfilesystemwatcher_inotify.cpp:248
#8  0x00007fb5f27db09b in QThreadPrivate::start (arg=0x203d5e0) at thread/qthread_unix.cpp:307
#9  0x00007fb5e9f52e9a in start_thread (arg=0x7fb5c7226700) at pthread_create.c:308
#10 0x00007fb5f5d9bcbd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7fb5c5671700 (LWP 2427)):
#0  0x00007fb5f5d8e8bd in read () at ../sysdeps/unix/syscall-template.S:82
#1  0x00007fb5e98908cf in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fb5e9855ba4 in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fb5e9855fd6 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fb5e985649a in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007fb5c615b406 in ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#6  0x00007fb5e98779e5 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#7  0x00007fb5e9f52e9a in start_thread (arg=0x7fb5c5671700) at pthread_create.c:308
#8  0x00007fb5f5d9bcbd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#9  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7fb5f64bc780 (LWP 2418)):
[KCrash Handler]
#6  0x00007fb5f45129ee in QDeclarativeItem::~QDeclarativeItem (this=0x608b820, __in_chrg=<optimized out>) at graphicsitems/qdeclarativeitem.cpp:1668
#7  0x00007fb5d4f55961 in ~QDeclarativeElement (this=0x608b820, __in_chrg=<optimized out>) at /usr/include/qt4/QtDeclarative/qdeclarativeprivate.h:87
#8  QDeclarativePrivate::QDeclarativeElement<Plasma::FrameSvgItem>::~QDeclarativeElement (this=<optimized out>, __in_chrg=<optimized out>) at /usr/include/qt4/QtDeclarative/qdeclarativeprivate.h:87
#9  0x00007fb5f28f3978 in QObject::event (this=0x608b820, e=<optimized out>) at kernel/qobject.cpp:1176
#10 0x00007fb5f1c5b7b4 in notify_helper (e=0x5582a60, receiver=0x608b820, this=0x1264c30) at kernel/qapplication.cpp:4556
#11 QApplicationPrivate::notify_helper (this=0x1264c30, receiver=0x608b820, e=0x5582a60) at kernel/qapplication.cpp:4528
#12 0x00007fb5f1c60583 in QApplication::notify (this=0x125d730, receiver=0x608b820, e=0x5582a60) at kernel/qapplication.cpp:4417
#13 0x00007fb5f35c1006 in KApplication::notify (this=0x125d730, receiver=0x608b820, event=0x5582a60) at ../../kdeui/kernel/kapplication.cpp:311
#14 0x00007fb5f28da32c in QCoreApplication::notifyInternal (this=0x125d730, receiver=0x608b820, event=0x5582a60) at kernel/qcoreapplication.cpp:915
#15 0x00007fb5f28de10a in sendEvent (event=0x5582a60, receiver=0x608b820) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#16 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x11e51f0) at kernel/qcoreapplication.cpp:1539
#17 0x00007fb5f2909493 in sendPostedEvents () at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:236
#18 postEventSourceDispatch (s=<optimized out>) at kernel/qeventdispatcher_glib.cpp:279
#19 0x00007fb5e9855d53 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#20 0x00007fb5e98560a0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#21 0x00007fb5e9856164 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#22 0x00007fb5f29098bf in QEventDispatcherGlib::processEvents (this=0x11e6ad0, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#23 0x00007fb5f1d03cde in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#24 0x00007fb5f28d8e62 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#25 0x00007fb5f28d90b7 in QEventLoop::exec (this=0x7fff04926c60, flags=...) at kernel/qeventloop.cpp:204
#26 0x00007fb5f28de407 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1187
#27 0x00007fb5f60a52ff in kdemain (argc=1, argv=0x7fff04927048) at ../../../../plasma/desktop/shell/main.cpp:126
#28 0x00007fb5f5cc976d in __libc_start_main (main=0x400640 <main(int, char**)>, argc=1, ubp_av=0x7fff04927048, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fff04927038) at libc-start.c:226
#29 0x0000000000400671 in _start ()

Possible duplicates by query: bug 317771, bug 317725, bug 317718, bug 317630, bug 317489.

Reported using DrKonqi