Application: plasma-desktop (0.4)
KDE Platform Version: 4.8.4 (4.8.4) (Compiled from sources)
Qt Version: 4.8.1
Operating System: Linux 3.4.1-030401-i7 x86_64
Distribution: Ubuntu 12.04 LTS

-- Information about the crash:
- What I was doing when the application crashed:
ogni volta che accendo il computer
- Unusual behavior I noticed:plasma crasha diventa tutto nero e non mi fa vedere lo sfondo o i pannelli

The crash can be reproduced every time.

-- Backtrace:
Application: Shell del desktop di 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 0x7f5a1272b780 (LWP 2121))]

Thread 7 (Thread 0x7f59eb06f700 (LWP 2123)):
#0  0x00007f5a06aa2f69 in __pthread_mutex_lock (mutex=0x7f59e4000a60) at pthread_mutex_lock.c:92
#1  0x00007f5a061d75a1 in g_mutex_lock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f5a0619b851 in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f5a0619bf5b in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f5a0619c164 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f5a0f1c3426 in QEventDispatcherGlib::processEvents (this=0x7f59e40008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#6  0x00007f5a0f192c82 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#7  0x00007f5a0f192ed7 in QEventLoop::exec (this=0x7f59eb06edd0, flags=...) at kernel/qeventloop.cpp:204
#8  0x00007f5a0f091fa7 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:501
#9  0x00007f5a0f1729ff in QInotifyFileSystemWatcherEngine::run (this=0x1d1b450) at io/qfilesystemwatcher_inotify.cpp:248
#10 0x00007f5a0f094fcb in QThreadPrivate::start (arg=0x1d1b450) at thread/qthread_unix.cpp:298
#11 0x00007f5a06aa0e9a in start_thread (arg=0x7f59eb06f700) at pthread_create.c:308
#12 0x00007f5a11fff4bd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#13 0x0000000000000000 in ?? ()

Thread 6 (Thread 0x7f59e9a78700 (LWP 2124)):
#0  0x00007f5a11ff3b03 in __GI___poll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007f5a0619c036 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f5a0619c164 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f5a0f1c3426 in QEventDispatcherGlib::processEvents (this=0x7f59dc0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#4  0x00007f5a0f192c82 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007f5a0f192ed7 in QEventLoop::exec (this=0x7f59e9a77dd0, flags=...) at kernel/qeventloop.cpp:204
#6  0x00007f5a0f091fa7 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:501
#7  0x00007f5a0f1729ff in QInotifyFileSystemWatcherEngine::run (this=0x1e45410) at io/qfilesystemwatcher_inotify.cpp:248
#8  0x00007f5a0f094fcb in QThreadPrivate::start (arg=0x1e45410) at thread/qthread_unix.cpp:298
#9  0x00007f5a06aa0e9a in start_thread (arg=0x7f59e9a78700) at pthread_create.c:308
#10 0x00007f5a11fff4bd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 5 (Thread 0x7f59e8f92700 (LWP 2125)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f5a0bf77222 in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#2  0x00007f5a0bf77259 in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#3  0x00007f5a06aa0e9a in start_thread (arg=0x7f59e8f92700) at pthread_create.c:308
#4  0x00007f5a11fff4bd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#5  0x0000000000000000 in ?? ()

Thread 4 (Thread 0x7f59e2621700 (LWP 2127)):
#0  0x00007f5a0619c49d in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f59e310b406 in ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#2  0x00007f5a061bd9e5 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f5a06aa0e9a in start_thread (arg=0x7f59e2621700) at pthread_create.c:308
#4  0x00007f5a11fff4bd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#5  0x0000000000000000 in ?? ()

Thread 3 (Thread 0x7f59d5fef700 (LWP 2135)):
#0  0x00007f5a11ff3b03 in __GI___poll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007f5a0619c036 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f5a0619c164 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f5a0f1c3426 in QEventDispatcherGlib::processEvents (this=0x7f59c40008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#4  0x00007f5a0f192c82 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007f5a0f192ed7 in QEventLoop::exec (this=0x7f59d5feee00, flags=...) at kernel/qeventloop.cpp:204
#6  0x00007f5a0f091fa7 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:501
#7  0x00007f5a0f094fcb in QThreadPrivate::start (arg=0x28ce6e0) at thread/qthread_unix.cpp:298
#8  0x00007f5a06aa0e9a in start_thread (arg=0x7f59d5fef700) at pthread_create.c:308
#9  0x00007f5a11fff4bd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#10 0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7f59cbfff700 (LWP 2139)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f5a0f0954db in wait (time=18446744073709551615, this=0x2b11e60) at thread/qwaitcondition_unix.cpp:86
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x2b30490, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:158
#3  0x00007f59f640c372 in meth_QWaitCondition_wait (sipSelf=<QWaitCondition at remote 0x255f210>, sipArgs=(<QMutex at remote 0x2b96fa0>,), sipKwds=<optimized out>) at sipQtCorepart1.cpp:6650
#4  0x00007f59f7060845 in PyEval_EvalFrameEx () from /usr/lib/libpython2.7.so.1.0
#5  0x00007f59f702b605 in PyEval_EvalCodeEx () from /usr/lib/libpython2.7.so.1.0
#6  0x00007f59f702b7bd in function_call () from /usr/lib/libpython2.7.so.1.0
#7  0x00007f59f710fe83 in PyObject_Call () from /usr/lib/libpython2.7.so.1.0
#8  0x00007f59f70f41cf in instancemethod_call.8746 () from /usr/lib/libpython2.7.so.1.0
#9  0x00007f59f710fe83 in PyObject_Call () from /usr/lib/libpython2.7.so.1.0
#10 0x00007f59f71107d7 in PyEval_CallObjectWithKeywords () from /usr/lib/libpython2.7.so.1.0
#11 0x00007f59f6150972 in sip_api_call_method (isErr=0x0, method=<instancemethod at remote 0x192b6e0>, fmt=0x7f59f64f9eb3 "") at /build/buildd/sip4-4.13.2/siplib/siplib.c:1751
#12 0x00007f59f63f3d50 in sipVH_QtCore_11 (sipGILState=PyGILState_UNLOCKED, sipMethod=<instancemethod at remote 0x192b6e0>) at sipQtCorepart0.cpp:4452
#13 0x00007f59f642978f in sipQThread::run (this=0x2561e90) at sipQtCorepart2.cpp:2900
#14 0x00007f5a0f094fcb in QThreadPrivate::start (arg=0x2561e90) at thread/qthread_unix.cpp:298
#15 0x00007f5a06aa0e9a in start_thread (arg=0x7f59cbfff700) at pthread_create.c:308
#16 0x00007f5a11fff4bd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#17 0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f5a1272b780 (LWP 2121)):
[KCrash Handler]
#6  0x00007f59f70ff4a8 in _PyCodec_Lookup () from /usr/lib/libpython2.7.so.1.0
#7  0x00007f59f70ff806 in PyCodec_Encoder () from /usr/lib/libpython2.7.so.1.0
#8  0x00007f59f70ff876 in PyCodec_Encode () from /usr/lib/libpython2.7.so.1.0
#9  0x00007f59f71237e5 in PyUnicodeUCS4_AsEncodedString () from /usr/lib/libpython2.7.so.1.0
#10 0x00007f59f707b366 in convertitem.38113 () from /usr/lib/libpython2.7.so.1.0
#11 0x00007f59f7050738 in vgetargs1.38149 () from /usr/lib/libpython2.7.so.1.0
#12 0x00007f59f706f0dc in _PyArg_ParseTuple_SizeT () from /usr/lib/libpython2.7.so.1.0
#13 0x00007f59f7070907 in posix_stat.66869 () from /usr/lib/libpython2.7.so.1.0
#14 0x00007f59f7060845 in PyEval_EvalFrameEx () from /usr/lib/libpython2.7.so.1.0
#15 0x00007f59f70615eb in PyEval_EvalFrameEx () from /usr/lib/libpython2.7.so.1.0
#16 0x00007f59f70615eb in PyEval_EvalFrameEx () from /usr/lib/libpython2.7.so.1.0
#17 0x00007f59f70615eb in PyEval_EvalFrameEx () from /usr/lib/libpython2.7.so.1.0
#18 0x00007f59f70615eb in PyEval_EvalFrameEx () from /usr/lib/libpython2.7.so.1.0
#19 0x00007f59f70615eb in PyEval_EvalFrameEx () from /usr/lib/libpython2.7.so.1.0
#20 0x00007f59f70615eb in PyEval_EvalFrameEx () from /usr/lib/libpython2.7.so.1.0
#21 0x00007f59f702b605 in PyEval_EvalCodeEx () from /usr/lib/libpython2.7.so.1.0
#22 0x00007f59f702b7bd in function_call () from /usr/lib/libpython2.7.so.1.0
#23 0x00007f59f710fe83 in PyObject_Call () from /usr/lib/libpython2.7.so.1.0
#24 0x00007f59f70f41cf in instancemethod_call.8746 () from /usr/lib/libpython2.7.so.1.0
#25 0x00007f59f710fe83 in PyObject_Call () from /usr/lib/libpython2.7.so.1.0
#26 0x00007f59f71107d7 in PyEval_CallObjectWithKeywords () from /usr/lib/libpython2.7.so.1.0
#27 0x00007f59f6158f80 in sip_api_invoke_slot (slot=<optimized out>, sigargs=()) at /build/buildd/sip4-4.13.2/siplib/qtlib.c:203
#28 0x00007f59f64e0396 in PyQtProxy::invokeSlot(qpycore_slot const&, void**) () from /usr/lib/python2.7/dist-packages/PyQt4/QtCore.so
#29 0x00007f59f64e0690 in PyQtProxy::unislot(void**) () from /usr/lib/python2.7/dist-packages/PyQt4/QtCore.so
#30 0x00007f59f64e0772 in PyQtProxy::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib/python2.7/dist-packages/PyQt4/QtCore.so
#31 0x00007f5a0f1a8489 in QMetaObject::activate (sender=0x25bdd90, m=<optimized out>, local_signal_index=<optimized out>, argv=0x0) at kernel/qobject.cpp:3566
#32 0x00007f59f6429f5f in sipQTimer::timerEvent (this=0x25bdd90, a0=0x7fff873b1340) at sipQtCorepart2.cpp:148
#33 0x00007f5a0f1ad179 in QObject::event (this=0x25bdd90, e=<optimized out>) at kernel/qobject.cpp:1157
#34 0x00007f59f642ae5d in event (a0=0x7fff873b1340, this=0x25bdd90) at sipQtCorepart2.cpp:165
#35 sipQTimer::event (this=0x25bdd90, a0=0x7fff873b1340) at sipQtCorepart2.cpp:157
#36 0x00007f5a0e516894 in notify_helper (e=0x7fff873b1340, receiver=0x25bdd90, this=0xc50000) at kernel/qapplication.cpp:4559
#37 QApplicationPrivate::notify_helper (this=0xc50000, receiver=0x25bdd90, e=0x7fff873b1340) at kernel/qapplication.cpp:4531
#38 0x00007f5a0e51b713 in QApplication::notify (this=0xc36740, receiver=0x25bdd90, e=0x7fff873b1340) at kernel/qapplication.cpp:4420
#39 0x00007f5a0fe779e6 in KApplication::notify (this=0xc36740, receiver=0x25bdd90, event=0x7fff873b1340) at ../../kdeui/kernel/kapplication.cpp:311
#40 0x00007f5a0f193e9c in QCoreApplication::notifyInternal (this=0xc36740, receiver=0x25bdd90, event=0x7fff873b1340) at kernel/qcoreapplication.cpp:876
#41 0x00007f5a0f1c51f2 in sendEvent (event=0x7fff873b1340, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#42 QTimerInfoList::activateTimers (this=0xc491b0) at kernel/qeventdispatcher_unix.cpp:611
#43 0x00007f5a0f1c2c0d in timerSourceDispatch (source=<optimized out>) at kernel/qeventdispatcher_glib.cpp:186
#44 timerSourceDispatch (source=<optimized out>) at kernel/qeventdispatcher_glib.cpp:180
#45 0x00007f5a0619bd53 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#46 0x00007f5a0619c0a0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#47 0x00007f5a0619c164 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#48 0x00007f5a0f1c33bf in QEventDispatcherGlib::processEvents (this=0xbc9ad0, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#49 0x00007f5a0e5bed5e in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#50 0x00007f5a0f192c82 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#51 0x00007f5a0f192ed7 in QEventLoop::exec (this=0x7fff873b15a0, flags=...) at kernel/qeventloop.cpp:204
#52 0x00007f5a0f197f67 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1148
#53 0x00007f5a1230ba13 in kdemain (argc=1, argv=0x7fff873b1988) at ../../../../plasma/desktop/shell/main.cpp:120
#54 0x00007f5a11f2e76d in __libc_start_main (main=0x400640 <main(int, char**)>, argc=1, ubp_av=0x7fff873b1988, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fff873b1978) at libc-start.c:226
#55 0x0000000000400671 in _start ()

Possible duplicates by query: bug 288634.

Reported using DrKonqi