Application: kwin (4.10.80)
KDE Platform Version: 4.10.80
Qt Version: 4.8.4
Operating System: Linux 3.9.2-1-CHAKRA x86_64
Distribution: "Chakra Linux"

-- Information about the crash:
- What I was doing when the application crashed: I had just logged in

- Unusual behavior I noticed: Black screen showing only the cursor

- Custom settings of the application: the settings are the system default, with a few desktop effects such as desktop cube

The crash can be reproduced sometimes.

-- Backtrace:
Application: KWin (kwin), signal: Aborted
Using host libthread_db library "/lib/libthread_db.so.1".
[Current thread is 1 (Thread 0x7ff7c39b2780 (LWP 1151))]

Thread 2 (Thread 0x7ff7a5a79700 (LWP 1155)):
#0  0x00007ff7bd62e8b4 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/libpthread.so.0
#1  0x00007ff7bd8bdabb in wait (time=18446744073709551615, this=0xe2a1c0) at thread/qwaitcondition_unix.cpp:86
#2  QWaitCondition::wait (this=<optimized out>, mutex=0xe2a0e0, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:158
#3  0x00007ff7bd8b87e6 in QReadWriteLock::lockForWrite (this=0xe29f68) at thread/qreadwritelock.cpp:293
#4  0x00007ff7bdd56ea4 in QDBusWriteLocker (s=0xe29ef0, a=ObjectDestroyedAction, this=0x7ff7a5a78c20) at qdbusthreaddebug_p.h:166
#5  QDBusConnectionPrivate::objectDestroyed (this=0xe29ef0, obj=0x7ff7980008c0) at qdbusintegrator.cpp:1177
#6  0x00007ff7bd9dedbf in QMetaObject::activate (sender=sender@entry=0x7ff7980008c0, m=m@entry=0x7ff7bdd2d8c0 <QObject::staticMetaObject>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x7ff7a5a78d80) at kernel/qobject.cpp:3539
#7  0x00007ff7bd9df6ef in QObject::destroyed (this=this@entry=0x7ff7980008c0, _t1=_t1@entry=0x7ff7980008c0) at .moc/debug-shared/moc_qobject.cpp:149
#8  0x00007ff7bd9df7e3 in QObject::~QObject (this=0x7ff7980008c0, __in_chrg=<optimized out>) at kernel/qobject.cpp:843
#9  0x00007ff7be1a8ff9 in KSycoca::~KSycoca() () from /usr/lib/libkdecore.so.5
#10 0x00007ff7bd8bb670 in QThreadStorageData::finish (p=0x101e618) at thread/qthreadstorage.cpp:203
#11 0x00007ff7bd8bc76c in QThreadPrivate::finish (arg=arg@entry=0x102f720) at thread/qthread_unix.cpp:361
#12 0x00007ff7bd8bd52f in ~__pthread_cleanup_class (this=<synthetic pointer>, __in_chrg=<optimized out>) at /usr/include/pthread.h:545
#13 QThreadPrivate::start (arg=0x102f720) at thread/qthread_unix.cpp:340
#14 0x00007ff7bd62add2 in start_thread () from /lib/libpthread.so.0
#15 0x00007ff7c3191ced in clone () from /lib/libc.so.6

Thread 1 (Thread 0x7ff7c39b2780 (LWP 1151)):
[KCrash Handler]
#5  0x00007ff7c30e11c9 in raise () from /lib/libc.so.6
#6  0x00007ff7c30e25c8 in abort () from /lib/libc.so.6
#7  0x00007ff7bd8b2dff in qt_message_output (msgType=msgType@entry=QtFatalMsg, buf=<optimized out>) at global/qglobal.cpp:2323
#8  0x00007ff7bd8b2f78 in qt_message(QtMsgType, const char *, typedef __va_list_tag __va_list_tag *) (msgType=msgType@entry=QtFatalMsg, msg=0x7ff7bda32218 "ASSERT: \"%s\" in file %s, line %d", ap=ap@entry=0x7fff3a685c88) at global/qglobal.cpp:2369
#9  0x00007ff7bd8b3104 in qFatal (msg=<optimized out>) at global/qglobal.cpp:2552
#10 0x00007ff7bd8dc9f5 in QListData::append (this=0xe29f90, n=1) at tools/qlist.cpp:233
#11 0x00007ff7bdd60072 in QList<QString>::append (this=0xe29f90, t=...) at ../../include/QtCore/../../src/corelib/tools/qlist.h:530
#12 0x00007ff7bdd993cb in QDBusConnectionPrivate::qt_metacall (this=0xe29ef0, _c=QMetaObject::InvokeMetaMethod, _id=<optimized out>, _a=0x7fff3a685f70) at .moc/debug-shared/moc_qdbusconnection_p.cpp:121
#13 0x00007ff7bdd57664 in QDBusConnectionPrivate::deliverCall (this=0xe29ef0, object=0xe29ef0, msg=..., metaTypes=..., slotIdx=13) at qdbusintegrator.cpp:951
#14 0x00007ff7bdd5822f in QDBusConnectionPrivate::handleSignal (this=this@entry=0xe29ef0, key=..., msg=...) at qdbusintegrator.cpp:1589
#15 0x00007ff7bdd58484 in QDBusConnectionPrivate::handleSignal (this=this@entry=0xe29ef0, msg=...) at qdbusintegrator.cpp:1608
#16 0x00007ff7bdd5a025 in QDBusConnectionPrivate::handleMessage (this=this@entry=0xe29ef0, amsg=...) at qdbusintegrator.cpp:571
#17 0x00007ff7bdd5cb76 in qDBusSignalFilter (connection=<optimized out>, message=0xe2ed10, data=0xe29ef0) at qdbusintegrator.cpp:552
#18 0x00007ff7b44d691e in dbus_connection_dispatch () from /usr/lib/libdbus-1.so.3
#19 0x00007ff7bdd4f749 in q_dbus_connection_dispatch (connection=<optimized out>) at qdbus_symbols_p.h:115
#20 QDBusConnectionPrivate::doDispatch (this=0xe29ef0) at qdbusintegrator.cpp:1133
#21 0x00007ff7bd9de36e in QObject::event (this=0xe29ef0, e=<optimized out>) at kernel/qobject.cpp:1194
#22 0x00007ff7bcaa7021 in QApplicationPrivate::notify_helper (this=this@entry=0xe311f0, receiver=receiver@entry=0xe29ef0, e=e@entry=0xff4130) at kernel/qapplication.cpp:4562
#23 0x00007ff7bcaac0f9 in QApplication::notify (this=0x7fff3a686de0, receiver=0xe29ef0, e=0xff4130) at kernel/qapplication.cpp:4423
#24 0x00007ff7c1c9463a in KApplication::notify(QObject*, QEvent*) () from /usr/lib/libkdeui.so.5
#25 0x00007ff7bd9c77ee in QCoreApplication::notifyInternal (this=0x7fff3a686de0, receiver=receiver@entry=0xe29ef0, event=event@entry=0xff4130) at kernel/qcoreapplication.cpp:946
#26 0x00007ff7bd9cb198 in sendEvent (event=0xff4130, receiver=0xe29ef0) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#27 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0xdac1f0) at kernel/qcoreapplication.cpp:1570
#28 0x00007ff7bcb55159 in sendPostedEvents () at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:236
#29 QEventDispatcherX11::processEvents (this=0xdadad0, flags=...) at kernel/qeventdispatcher_x11.cpp:75
#30 0x00007ff7bd9c5d2f in QEventLoop::processEvents (this=this@entry=0x7fff3a686c60, flags=...) at kernel/qeventloop.cpp:149
#31 0x00007ff7bd9c5f88 in QEventLoop::exec (this=0x7fff3a686c60, flags=...) at kernel/qeventloop.cpp:204
#32 0x00007ff7bd9cb5a8 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1218
#33 0x00007ff7c34d3037 in kdemain () from /usr/lib/libkdeinit4_kwin.so
#34 0x00007ff7c30cda15 in __libc_start_main () from /lib/libc.so.6
#35 0x0000000000400691 in _start ()

Reported using DrKonqi