Application: plasma-desktop (0.4)
KDE Platform Version: 4.9.5
Qt Version: 4.8.3
Operating System: Linux 3.5.0-25-generic x86_64
Distribution: Ubuntu 12.10

-- Information about the crash:
- What I was doing when the application crashed:
 1. Right-clicking on desktop » Add a graphical component (ie plasmoid, I don't remember the exact label in English);
 2. Searching for a widget (without success, no results);
 3. Choosing the “Multimedia” category;
 4. Adding the “Now Playing” plasmoid by drag&drop;
 5. Setting it up with the left menu of the plasmoid;
 6. Saving (no changes, but saving already);
 7. Plasma crashes, black screen (and reboot a few seconds later).

- Unusual behavior I noticed:
  Nothing before the crash.

-- 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 0x7f9707b977c0 (LWP 2399))]

Thread 5 (Thread 0x7f96e5edd700 (LWP 2423)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f9701171cd7 in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#2  0x00007f9701171d09 in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#3  0x00007f96f8a422e4 in ?? () from /usr/lib/nvidia-experimental-310/libGL.so.1
#4  0x00007f96fb80ae9a in start_thread (arg=0x7f96e5edd700) at pthread_create.c:308
#5  0x00007f9707477cbd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#6  0x0000000000000000 in ?? ()

Thread 4 (Thread 0x7f96dde27700 (LWP 2429)):
#0  0x00007f970746c303 in __GI___poll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007f96fb10bd84 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f96fb10bea4 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f970411ac16 in QEventDispatcherGlib::processEvents (this=0x7f96d80008f0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#4  0x00007f97040eb2bf in QEventLoop::processEvents (this=this@entry=0x7f96dde26cd0, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007f97040eb548 in QEventLoop::exec (this=0x7f96dde26cd0, flags=...) at kernel/qeventloop.cpp:204
#6  0x00007f9703fecb10 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:501
#7  0x00007f97040cb9af in QInotifyFileSystemWatcherEngine::run (this=0x2f6e5c0) at io/qfilesystemwatcher_inotify.cpp:248
#8  0x00007f9703fefaec in QThreadPrivate::start (arg=0x2f6e5c0) at thread/qthread_unix.cpp:338
#9  0x00007f96f8a422e4 in ?? () from /usr/lib/nvidia-experimental-310/libGL.so.1
#10 0x00007f96fb80ae9a in start_thread (arg=0x7f96dde27700) at pthread_create.c:308
#11 0x00007f9707477cbd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#12 0x0000000000000000 in ?? ()

Thread 3 (Thread 0x7f96d6f99700 (LWP 2434)):
#0  0x00007f970746c303 in __GI___poll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007f96fb10bd84 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f96fb10bea4 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f970411ac16 in QEventDispatcherGlib::processEvents (this=0x7f96c80008f0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#4  0x00007f97040eb2bf in QEventLoop::processEvents (this=this@entry=0x7f96d6f98cd0, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007f97040eb548 in QEventLoop::exec (this=0x7f96d6f98cd0, flags=...) at kernel/qeventloop.cpp:204
#6  0x00007f9703fecb10 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:501
#7  0x00007f97040cb9af in QInotifyFileSystemWatcherEngine::run (this=0x30b57e0) at io/qfilesystemwatcher_inotify.cpp:248
#8  0x00007f9703fefaec in QThreadPrivate::start (arg=0x30b57e0) at thread/qthread_unix.cpp:338
#9  0x00007f96f8a422e4 in ?? () from /usr/lib/nvidia-experimental-310/libGL.so.1
#10 0x00007f96fb80ae9a in start_thread (arg=0x7f96d6f99700) at pthread_create.c:308
#11 0x00007f9707477cbd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#12 0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7f96ce8e3700 (LWP 2509)):
#0  0x00007f970746c303 in __GI___poll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007f96fb10bd84 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f96fb10bea4 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f970411ac16 in QEventDispatcherGlib::processEvents (this=0x7f96bc0008f0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#4  0x00007f97040eb2bf in QEventLoop::processEvents (this=this@entry=0x7f96ce8e2d00, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007f97040eb548 in QEventLoop::exec (this=0x7f96ce8e2d00, flags=...) at kernel/qeventloop.cpp:204
#6  0x00007f9703fecb10 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:501
#7  0x00007f9703fefaec in QThreadPrivate::start (arg=0x20273a0) at thread/qthread_unix.cpp:338
#8  0x00007f96f8a422e4 in ?? () from /usr/lib/nvidia-experimental-310/libGL.so.1
#9  0x00007f96fb80ae9a in start_thread (arg=0x7f96ce8e3700) at pthread_create.c:308
#10 0x00007f9707477cbd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f9707b977c0 (LWP 2399)):
[KCrash Handler]
#6  0x00007f9705cdfdd4 in QDeclarativeItem::~QDeclarativeItem (this=0x85985c0, __in_chrg=<optimized out>) at graphicsitems/qdeclarativeitem.cpp:1668
#7  0x00007f96e4f24311 in ?? () from /usr/lib/kde4/imports/org/kde/plasma/core/libcorebindingsplugin.so
#8  0x00007f9704101468 in QObject::event (this=0x85985c0, e=<optimized out>) at kernel/qobject.cpp:1176
#9  0x00007f9703493e9c in QApplicationPrivate::notify_helper (this=this@entry=0x19fb4c0, receiver=receiver@entry=0x85985c0, e=e@entry=0xa73f740) at kernel/qapplication.cpp:4562
#10 0x00007f970349830a in QApplication::notify (this=0x19fe220, receiver=0x85985c0, e=0xa73f740) at kernel/qapplication.cpp:4423
#11 0x00007f9704da51f6 in KApplication::notify (this=0x19fe220, receiver=0x85985c0, event=0xa73f740) at ../../kdeui/kernel/kapplication.cpp:311
#12 0x00007f97040ec56e in QCoreApplication::notifyInternal (this=0x19fe220, receiver=receiver@entry=0x85985c0, event=event@entry=0xa73f740) at kernel/qcoreapplication.cpp:915
#13 0x00007f97040f03f1 in sendEvent (event=0xa73f740, receiver=0x85985c0) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#14 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x196d1f0) at kernel/qcoreapplication.cpp:1539
#15 0x00007f970411aa63 in sendPostedEvents () at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:236
#16 postEventSourceDispatch (s=0x1a604b0) at kernel/qeventdispatcher_glib.cpp:279
#17 0x00007f96fb10bab5 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#18 0x00007f96fb10bde8 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#19 0x00007f96fb10bea4 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#20 0x00007f970411abf6 in QEventDispatcherGlib::processEvents (this=0x196ead0, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#21 0x00007f9703538c1e in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#22 0x00007f97040eb2bf in QEventLoop::processEvents (this=this@entry=0x7fffb17f74b0, flags=...) at kernel/qeventloop.cpp:149
#23 0x00007f97040eb548 in QEventLoop::exec (this=0x7fffb17f74b0, flags=...) at kernel/qeventloop.cpp:204
#24 0x00007f97040f0708 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1187
#25 0x00007f970777e035 in kdemain () from /usr/lib/kde4/libkdeinit/libkdeinit4_plasma-desktop.so
#26 0x00007f97073a576d in __libc_start_main (main=0x4006a0, argc=1, ubp_av=0x7fffb17f77a8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fffb17f7798) at libc-start.c:226
#27 0x00000000004006d1 in _start ()

This bug may be a duplicate of or related to bug 309311.

Possible duplicates by query: bug 316807, bug 316756, bug 316700, bug 316671, bug 316643.

Reported using DrKonqi