Application: plasma-desktop (4.10.5)
KDE Platform Version: 4.10.5
Qt Version: 4.8.4
Operating System: Linux 3.8.0-30-generic i686
Distribution: Linux Mint 15 Olivia

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

Another program that I was using froze, so I rebooted my computer. When KDE tried to come up it was nothing but a black screen after the splash.  I could boot into other Desktop Environments (Cinnamon and Gnome), but not KDE. After researching some, I learned that I could access apps and settings by using Alt + F2, and was eventually able to reinstall plasma and all other kde/plasma related stuff. My desktop FINALLY came back up, and it was only then at the crash report started.

-- Backtrace:
Application: Plasma Desktop Shell (plasma-desktop), signal: Segmentation fault
Using host libthread_db library "/lib/i386-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0xb116b740 (LWP 2077))]

Thread 7 (Thread 0xae6ccb40 (LWP 2079)):
#0  0xb77ac424 in __kernel_vsyscall ()
#1  0xb202584b in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/i386-linux-gnu/libpthread.so.0
#2  0xb765ed7c in pthread_cond_wait () from /lib/i386-linux-gnu/libc.so.6
#3  0xb4a18ae5 in ?? () from /usr/lib/i386-linux-gnu/libQtWebKit.so.4
#4  0xb4a18b1f in ?? () from /usr/lib/i386-linux-gnu/libQtWebKit.so.4
#5  0xb2021d78 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#6  0xb76513de in clone () from /lib/i386-linux-gnu/libc.so.6

Thread 6 (Thread 0xadcc1b40 (LWP 2107)):
#0  0xb77ac424 in __kernel_vsyscall ()
#1  0xb202584b in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/i386-linux-gnu/libpthread.so.0
#2  0xb765ed7c in pthread_cond_wait () from /lib/i386-linux-gnu/libc.so.6
#3  0xb30210ad in ?? () from /usr/lib/i386-linux-gnu/libQtScript.so.4
#4  0xb30210df in ?? () from /usr/lib/i386-linux-gnu/libQtScript.so.4
#5  0xb2021d78 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#6  0xb76513de in clone () from /lib/i386-linux-gnu/libc.so.6

Thread 5 (Thread 0xa7840b40 (LWP 2147)):
#0  0xb77ac424 in __kernel_vsyscall ()
#1  0xb76648e2 in clock_gettime () from /lib/i386-linux-gnu/libc.so.6
#2  0xb5f670d5 in do_gettime (frac=0xa783ffe0, sec=0xa783ffd8) at tools/qelapsedtimer_unix.cpp:123
#3  qt_gettime () at tools/qelapsedtimer_unix.cpp:140
#4  0xb604e80e in QTimerInfoList::updateCurrentTime (this=this@entry=0xa6f02074) at kernel/qeventdispatcher_unix.cpp:354
#5  0xb604d695 in timerSourceCheckHelper (src=0xa6f02040) at kernel/qeventdispatcher_glib.cpp:150
#6  timerSourceCheckHelper (src=0xa6f02040) at kernel/qeventdispatcher_glib.cpp:144
#7  0xb1f12117 in g_main_context_check () from /lib/i386-linux-gnu/libglib-2.0.so.0
#8  0xb1f12662 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#9  0xb1f12831 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#10 0xb604dc3f in QEventDispatcherGlib::processEvents (this=0xa6f00468, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#11 0xb601a3ec in QEventLoop::processEvents (this=this@entry=0xa7840258, flags=...) at kernel/qeventloop.cpp:149
#12 0xb601a6e1 in QEventLoop::exec (this=this@entry=0xa7840258, flags=...) at kernel/qeventloop.cpp:204
#13 0xb5f05fec in QThread::exec (this=this@entry=0x90ec7d8) at thread/qthread.cpp:542
#14 0xb5f0614b in QThread::run (this=0x90ec7d8) at thread/qthread.cpp:609
#15 0xb5f08b18 in QThreadPrivate::start (arg=0x90ec7d8) at thread/qthread_unix.cpp:338
#16 0xb2021d78 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#17 0xb76513de in clone () from /lib/i386-linux-gnu/libc.so.6

Thread 4 (Thread 0xacdd6b40 (LWP 2160)):
#0  0xb1edff50 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0

Thread 3 (Thread 0xa62ffb40 (LWP 2487)):
#0  0xb1f55a4a in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#1  0xb1f55d28 in g_mutex_lock () from /lib/i386-linux-gnu/libglib-2.0.so.0
#2  0xb1f11d2b in g_main_context_prepare () from /lib/i386-linux-gnu/libglib-2.0.so.0
#3  0xb1f125cf in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#4  0xb1f12831 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#5  0xb604dc3f in QEventDispatcherGlib::processEvents (this=0xa5902388, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#6  0xb601a3ec in QEventLoop::processEvents (this=this@entry=0xa62ff258, flags=...) at kernel/qeventloop.cpp:149
#7  0xb601a6e1 in QEventLoop::exec (this=this@entry=0xa62ff258, flags=...) at kernel/qeventloop.cpp:204
#8  0xb5f05fec in QThread::exec (this=this@entry=0x9210718) at thread/qthread.cpp:542
#9  0xb5f0614b in QThread::run (this=0x9210718) at thread/qthread.cpp:609
#10 0xb5f08b18 in QThreadPrivate::start (arg=0x9210718) at thread/qthread_unix.cpp:338
#11 0xb2021d78 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#12 0xb76513de in clone () from /lib/i386-linux-gnu/libc.so.6

Thread 2 (Thread 0xac5d5b40 (LWP 2524)):
#0  0xb77ac424 in __kernel_vsyscall ()
#1  0xb76648e2 in clock_gettime () from /lib/i386-linux-gnu/libc.so.6
#2  0xb5f670d5 in do_gettime (frac=0xac5d4f90, sec=0xac5d4f88) at tools/qelapsedtimer_unix.cpp:123
#3  qt_gettime () at tools/qelapsedtimer_unix.cpp:140
#4  0xb604e80e in QTimerInfoList::updateCurrentTime (this=this@entry=0xa590d0c4) at kernel/qeventdispatcher_unix.cpp:354
#5  0xb604eb9a in QTimerInfoList::timerWait (this=0xa590d0c4, tm=...) at kernel/qeventdispatcher_unix.cpp:461
#6  0xb604d373 in timerSourcePrepareHelper (src=<optimized out>, timeout=0xac5d50bc) at kernel/qeventdispatcher_glib.cpp:136
#7  0xb604d40d in timerSourcePrepare (source=0xa590d090, timeout=0xac5d50bc) at kernel/qeventdispatcher_glib.cpp:169
#8  0xb1f11d21 in g_main_context_prepare () from /lib/i386-linux-gnu/libglib-2.0.so.0
#9  0xb1f125cf in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#10 0xb1f12831 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#11 0xb604dc3f in QEventDispatcherGlib::processEvents (this=0xa590cdc0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#12 0xb601a3ec in QEventLoop::processEvents (this=this@entry=0xac5d5258, flags=...) at kernel/qeventloop.cpp:149
#13 0xb601a6e1 in QEventLoop::exec (this=this@entry=0xac5d5258, flags=...) at kernel/qeventloop.cpp:204
#14 0xb5f05fec in QThread::exec (this=this@entry=0x91da798) at thread/qthread.cpp:542
#15 0xb5f0614b in QThread::run (this=0x91da798) at thread/qthread.cpp:609
#16 0xb5f08b18 in QThreadPrivate::start (arg=0x91da798) at thread/qthread_unix.cpp:338
#17 0xb2021d78 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#18 0xb76513de in clone () from /lib/i386-linux-gnu/libc.so.6

Thread 1 (Thread 0xb116b740 (LWP 2077)):
[KCrash Handler]
#7  0xa7855d13 in isEmpty (this=0x2400163) at /usr/include/qt4/QtCore/qstring.h:705
#8  RTM::Auth::getAuthUrl (this=this@entry=0x90d5ec8) at ../../../libs/rtm/auth.cpp:80
#9  0xa78472e2 in RTM::Session::handleValidToken (this=this@entry=0x90ec650, valid=false) at ../../../libs/rtm/session.cpp:123
#10 0xa7849eb8 in qt_static_metacall (_a=0xbfaa8b78, _id=15, _o=0x90ec650, _c=<optimized out>) at ./moc_session.cpp:111
#11 RTM::Session::qt_static_metacall (_o=0x90ec650, _c=QMetaObject::InvokeMetaMethod, _id=15, _a=0xbfaa8b78) at ./moc_session.cpp:90
#12 0xb6031b56 in QMetaObject::activate (sender=sender@entry=0x90ec650, m=m@entry=0xa7862d18 <RTM::Session::staticMetaObject>, local_signal_index=local_signal_index@entry=1, argv=argv@entry=0xbfaa8b78) at kernel/qobject.cpp:3539
#13 0xa7847abd in RTM::Session::tokenCheck (this=this@entry=0x90ec650, _t1=_t1@entry=false) at ./moc_session.cpp:178
#14 0xa7847b0f in RTM::Session::checkToken (this=0x90ec650) at ../../../libs/rtm/session.cpp:144
#15 0xa7848394 in RTM::Session::setToken (this=this@entry=0x90ec650, token=...) at ../../../libs/rtm/session.cpp:111
#16 0xa7849420 in RTM::Session::Session (this=0x90ec650, apiKey=..., sharedSecret=..., permissions=RTM::Delete, token=..., parent=0x0) at ../../../libs/rtm/session.cpp:53
#17 0xa788867a in RtmEngine::RtmEngine (this=0x90f26c0, parent=0x0, args=...) at ../../../dataengines/rememberthemilk/rtmengine.cpp:51
#18 0xa7889d0a in KPluginFactory::createInstance<RtmEngine, QObject> (parentWidget=0x0, parent=0x0, args=...) at /usr/include/kpluginfactory.h:477
#19 0xb640e36e in KPluginFactory::create (this=0x90ec688, iface=0xb74d7d60 <qt_meta_stringdata_Plasma__DataEngine> "Plasma::DataEngine", parentWidget=0x0, parent=0x0, args=..., keyword=...) at ../../kdecore/util/kpluginfactory.cpp:203
#20 0xb736c965 in create<Plasma::DataEngine> (args=..., keyword=..., parent=0x0, parentWidget=0x0, this=0x90ec688) at ../../kdecore/util/kpluginfactory.h:531
#21 createInstance<Plasma::DataEngine> (error=0xbfaa8dac, args=..., parent=0x0, parentWidget=0x0, this=0x90dc778) at ../../kdecore/services/kservice.h:559
#22 createInstance<Plasma::DataEngine> (error=0xbfaa8dac, args=..., parent=0x0, this=0x90dc778) at ../../kdecore/services/kservice.h:536
#23 Plasma::PluginLoader::loadDataEngine (this=0x8aba338, name=...) at ../../plasma/pluginloader.cpp:184
#24 0xb7352661 in Plasma::DataEngineManager::loadEngine (this=0x8d2c5d8, name=...) at ../../plasma/dataenginemanager.cpp:132
#25 0xb738b6c5 in Plasma::DataEngineConsumer::dataEngine (this=0x8da4d40, name=...) at ../../plasma/private/dataengineconsumer.cpp:105
#26 0xb7312453 in Plasma::Applet::dataEngine (this=this@entry=0x8d53228, name=...) at ../../plasma/applet.cpp:685
#27 0xae78b00a in RememberTheMilkPlasmoid::graphicsWidget (this=0x8d53228) at ../../../applets/rememberthemilk/rememberthemilk-plasmoid.cpp:317
#28 0xae78cecd in RememberTheMilkPlasmoid::init (this=0x8d53228) at ../../../applets/rememberthemilk/rememberthemilk-plasmoid.cpp:88
#29 0xb7339107 in Plasma::ContainmentPrivate::initApplets (this=0x8cf6778) at ../../plasma/containment.cpp:460
#30 0xb73495e2 in Plasma::CoronaPrivate::importLayout (this=0x8b231e0, conf=..., mergeConfig=mergeConfig@entry=false) at ../../plasma/corona.cpp:1067
#31 0xb734a355 in Plasma::Corona::loadLayout (this=this@entry=0x8c80460, configName=...) at ../../plasma/corona.cpp:278
#32 0xb734a42e in Plasma::Corona::initializeLayout (this=this@entry=0x8c80460, configName=...) at ../../plasma/corona.cpp:181
#33 0xb777ea62 in PlasmaApp::corona (this=this@entry=0x8ae6970, createIfMissing=createIfMissing@entry=true) at ../../../../plasma/desktop/shell/plasmaapp.cpp:856
#34 0xb777f75c in PlasmaApp::setupDesktop (this=this@entry=0x8ae6970) at ../../../../plasma/desktop/shell/plasmaapp.cpp:314
#35 0xb7783629 in qt_static_metacall (_a=0x8b7fe80, _id=17, _o=0x8ae6970, _c=<optimized out>) at ./plasmaapp.moc:129
#36 PlasmaApp::qt_static_metacall (_o=0x8ae6970, _c=QMetaObject::InvokeMetaMethod, _id=17, _a=0x8b7fe80) at ./plasmaapp.moc:103
#37 0xb602db4a in QMetaCallEvent::placeMetaCall (this=0x8bdda18, object=0x8ae6970) at kernel/qobject.cpp:524
#38 0xb603748b in QObject::event (this=this@entry=0x8ae6970, e=e@entry=0x8bdda18) at kernel/qobject.cpp:1194
#39 0xb60206da in QCoreApplication::event (this=this@entry=0x8ae6970, e=e@entry=0x8bdda18) at kernel/qcoreapplication.cpp:1758
#40 0xb55123cd in QApplication::event (this=0x8ae6970, e=0x8bdda18) at kernel/qapplication.cpp:2549
#41 0xb5509c7c in QApplicationPrivate::notify_helper (this=0x8aedb60, receiver=0x8ae6970, e=0x8bdda18) at kernel/qapplication.cpp:4567
#42 0xb550cb94 in QApplication::notify (this=0x8bdda18, receiver=0x8ae6970, e=0x8bdda18) at kernel/qapplication.cpp:3949
#43 0xb66b5491 in KApplication::notify (this=0x8ae6970, receiver=0x8ae6970, event=0x8bdda18) at ../../kdeui/kernel/kapplication.cpp:311
#44 0xb601b90e in QCoreApplication::notifyInternal (this=0x8ae6970, receiver=0x8ae6970, event=0x8bdda18) at kernel/qcoreapplication.cpp:946
#45 0xb601f721 in sendEvent (event=<optimized out>, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#46 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x8a8c130) at kernel/qcoreapplication.cpp:1570
#47 0xb601fa8c in QCoreApplication::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0) at kernel/qcoreapplication.cpp:1463
#48 0xb604daa4 in sendPostedEvents () at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:236
#49 postEventSourceDispatch (s=0x8af2760) at kernel/qeventdispatcher_glib.cpp:279
#50 0xb1f123b3 in g_main_context_dispatch () from /lib/i386-linux-gnu/libglib-2.0.so.0
#51 0xb1f12750 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#52 0xb1f12831 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#53 0xb604dc21 in QEventDispatcherGlib::processEvents (this=this@entry=0x8a8cea8, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#54 0xb55c0a5a in QGuiEventDispatcherGlib::processEvents (this=0x8a8cea8, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#55 0xb601a3ec in QEventLoop::processEvents (this=this@entry=0xbfaa9c38, flags=...) at kernel/qeventloop.cpp:149
#56 0xb601a6e1 in QEventLoop::exec (this=this@entry=0xbfaa9c38, flags=...) at kernel/qeventloop.cpp:204
#57 0xb60203fa in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1218
#58 0xb5507fc4 in QApplication::exec () at kernel/qapplication.cpp:3828
#59 0xb7765e32 in kdemain (argc=1, argv=0xbfaa9df4) at ../../../../plasma/desktop/shell/main.cpp:126
#60 0x0804855b in main (argc=1, argv=0xbfaa9df4) at plasma-desktop_dummy.cpp:3

Possible duplicates by query: bug 322724, bug 321321, bug 315414, bug 314668.

Reported using DrKonqi