Application: plasma-desktop (4.11.11)
KDE Platform Version: 4.14.2
Qt Version: 4.8.6
Operating System: Linux 3.19.0-32-generic x86_64
Distribution: Linux Mint 17.3 Rosa

-- Information about the crash:
plasma didnt load. after login the system started loading and then the screen went black. I could move the mouse and load yakuake (loading on startup with kde). tried "sudo startx" but crashed again.
after loading the system on recovery mode, a couple of errors were corrected in the library. Rebooted the system and it crashed with the message: Executável: plasma-desktop PID: 2213 Sinal: Segmentation fault (11) Tempo: 2016-01-23 18:53:25, but I can access the GUI now...
Can't make the system reboot without this crash.

The crash can be reproduced every time.

-- Backtrace:
Application: Consola do Ambiente 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 0x7f53671b67c0 (LWP 2213))]

Thread 7 (Thread 0x7f533cf39700 (LWP 2214)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f5361a2a81d in ?? () from /usr/lib/x86_64-linux-gnu/libQtWebKit.so.4
#2  0x00007f5361a2a859 in ?? () from /usr/lib/x86_64-linux-gnu/libQtWebKit.so.4
#3  0x00007f535a9de182 in start_thread (arg=0x7f533cf39700) at pthread_create.c:312
#4  0x00007f5366aa947d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 6 (Thread 0x7f52fa1ca700 (LWP 2215)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f535fe67ffb in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#2  0x00007f535fe68039 in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#3  0x00007f535a9de182 in start_thread (arg=0x7f52fa1ca700) at pthread_create.c:312
#4  0x00007f5366aa947d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 5 (Thread 0x7f52739e9700 (LWP 2216)):
#0  pthread_mutex_unlock (mutex=0x7f526c000a60) at forward.c:194
#1  0x00007f535a30e9b1 in g_mutex_unlock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f535a2cc718 in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f535a2ccf03 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f535a2cd0ec in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f536367d7be in QEventDispatcherGlib::processEvents (this=0x7f526c0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:436
#6  0x00007f536364f0af in QEventLoop::processEvents (this=this@entry=0x7f52739e8de0, flags=...) at kernel/qeventloop.cpp:149
#7  0x00007f536364f3a5 in QEventLoop::exec (this=this@entry=0x7f52739e8de0, flags=...) at kernel/qeventloop.cpp:204
#8  0x00007f536354bc5f in QThread::exec (this=this@entry=0x2aef140) at thread/qthread.cpp:537
#9  0x00007f5363630823 in QInotifyFileSystemWatcherEngine::run (this=0x2aef140) at io/qfilesystemwatcher_inotify.cpp:265
#10 0x00007f536354e32f in QThreadPrivate::start (arg=0x2aef140) at thread/qthread_unix.cpp:349
#11 0x00007f535a9de182 in start_thread (arg=0x7f52739e9700) at pthread_create.c:312
#12 0x00007f5366aa947d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 4 (Thread 0x7f52731e8700 (LWP 2217)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f536176b20d in ?? () from /usr/lib/x86_64-linux-gnu/libQtWebKit.so.4
#2  0x00007f5361a59fd6 in ?? () from /usr/lib/x86_64-linux-gnu/libQtWebKit.so.4
#3  0x00007f535a9de182 in start_thread (arg=0x7f52731e8700) at pthread_create.c:312
#4  0x00007f5366aa947d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 3 (Thread 0x7f527166c700 (LWP 2218)):
#0  0x00007f5366a9c12d in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f535a2ccfe4 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f535a2cd0ec in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f536367d7be in QEventDispatcherGlib::processEvents (this=0x7f52680008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:436
#4  0x00007f536364f0af in QEventLoop::processEvents (this=this@entry=0x7f527166be20, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007f536364f3a5 in QEventLoop::exec (this=this@entry=0x7f527166be20, flags=...) at kernel/qeventloop.cpp:204
#6  0x00007f536354bc5f in QThread::exec (this=<optimized out>) at thread/qthread.cpp:537
#7  0x00007f536354e32f in QThreadPrivate::start (arg=0x2993a10) at thread/qthread_unix.cpp:349
#8  0x00007f535a9de182 in start_thread (arg=0x7f527166c700) at pthread_create.c:312
#9  0x00007f5366aa947d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 2 (Thread 0x7f5263fff700 (LWP 2648)):
#0  0x00007f5366a9a82d in read () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f535a30dc10 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f535a2ccb14 in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f535a2ccf7b in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f535a2cd0ec in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f536367d7be in QEventDispatcherGlib::processEvents (this=0x7f525c009800, flags=...) at kernel/qeventdispatcher_glib.cpp:436
#6  0x00007f536364f0af in QEventLoop::processEvents (this=this@entry=0x7f5263ffee20, flags=...) at kernel/qeventloop.cpp:149
#7  0x00007f536364f3a5 in QEventLoop::exec (this=this@entry=0x7f5263ffee20, flags=...) at kernel/qeventloop.cpp:204
#8  0x00007f536354bc5f in QThread::exec (this=<optimized out>) at thread/qthread.cpp:537
#9  0x00007f536354e32f in QThreadPrivate::start (arg=0x3156ac0) at thread/qthread_unix.cpp:349
#10 0x00007f535a9de182 in start_thread (arg=0x7f5263fff700) at pthread_create.c:312
#11 0x00007f5366aa947d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 1 (Thread 0x7f53671b67c0 (LWP 2213)):
[KCrash Handler]
#6  0x00007f5271682ac6 in RTM::Auth::getAuthUrl (this=this@entry=0x2f87570) at ../../../libs/rtm/auth.cpp:82
#7  0x00007f52716750be in RTM::Session::handleValidToken (this=0x2f87020, valid=<optimized out>) at ../../../libs/rtm/session.cpp:131
#8  0x00007f52716781ce in RTM::Session::qt_static_metacall (_o=0x7fff14da7f40, _id=49837424, _a=0x3156580, _c=<optimized out>) at ./moc_session.cpp:113
#9  0x00007f536366487a in QMetaObject::activate (sender=sender@entry=0x2f87020, m=m@entry=0x7f527188d9e0 <RTM::Session::staticMetaObject>, local_signal_index=local_signal_index@entry=1, argv=argv@entry=0x7fff14da8190) at kernel/qobject.cpp:3539
#10 0x00007f52716756a2 in RTM::Session::tokenCheck (this=this@entry=0x2f87020, _t1=_t1@entry=false) at ./moc_session.cpp:184
#11 0x00007f52716756d6 in RTM::Session::checkToken (this=0x2f87020) at ../../../libs/rtm/session.cpp:152
#12 0x00007f5271676bae in RTM::Session::Session (this=0x2f87020, apiKey=..., sharedSecret=..., permissions=RTM::Delete, token=..., parent=<optimized out>) at ../../../libs/rtm/session.cpp:53
#13 0x00007f527189696c in RtmEngine::RtmEngine (this=0x29a3450, parent=<optimized out>, args=...) at ../../../dataengines/rememberthemilk/rtmengine.cpp:51
#14 0x00007f52718973d8 in KPluginFactory::createInstance<RtmEngine, QObject> (parentWidget=<optimized out>, parent=<optimized out>, args=...) at /usr/include/kpluginfactory.h:477
#15 0x00007f5363e316c3 in KPluginFactory::create (this=0x2dcb0a0, iface=0x7f5366722b60 <qt_meta_stringdata_Plasma__DataEngine> "Plasma::DataEngine", parentWidget=0x0, parent=0x0, args=..., keyword=...) at ../../kdecore/util/kpluginfactory.cpp:203
#16 0x00007f53665e0009 in create<Plasma::DataEngine> (args=..., keyword=..., parent=0x0, parentWidget=0x0, this=0x2dcb0a0) at ../../kdecore/util/kpluginfactory.h:531
#17 createInstance<Plasma::DataEngine> (error=0x7fff14da8410, args=..., parent=0x0, parentWidget=0x0, this=0x2f7e3d0) at ../../kdecore/services/kservice.h:573
#18 createInstance<Plasma::DataEngine> (error=0x7fff14da8410, args=..., parent=0x0, this=0x2f7e3d0) at ../../kdecore/services/kservice.h:550
#19 Plasma::PluginLoader::loadDataEngine (this=<optimized out>, name=...) at ../../plasma/pluginloader.cpp:184
#20 0x00007f53665c9eb0 in Plasma::DataEngineManager::loadEngine (this=0x1e085c0, name=...) at ../../plasma/dataenginemanager.cpp:132
#21 0x00007f53665fb22b in Plasma::DataEngineConsumer::dataEngine (this=0x209e520, name=...) at ../../plasma/private/dataengineconsumer.cpp:105
#22 0x00007f536659284c in Plasma::Applet::dataEngine (this=this@entry=0x209d350, name=...) at ../../plasma/applet.cpp:685
#23 0x00007f533cf4b886 in RememberTheMilkPlasmoid::graphicsWidget (this=0x209d350) at ../../../applets/rememberthemilk/rememberthemilk-plasmoid.cpp:317
#24 0x00007f533cf4c1e4 in RememberTheMilkPlasmoid::init (this=0x209d350) at ../../../applets/rememberthemilk/rememberthemilk-plasmoid.cpp:88
#25 0x00007f53665b5b7c in Plasma::ContainmentPrivate::initApplets (this=0x1ffc450) at ../../plasma/containment.cpp:460
#26 0x00007f53665c2a4c in Plasma::CoronaPrivate::importLayout (this=0x1b76c90, conf=..., mergeConfig=mergeConfig@entry=false) at ../../plasma/corona.cpp:1070
#27 0x00007f53665c344a in Plasma::Corona::loadLayout (this=this@entry=0x1b85d90, configName=...) at ../../plasma/corona.cpp:281
#28 0x00007f53665c3504 in Plasma::Corona::initializeLayout (this=this@entry=0x1b85d90, configName=...) at ../../plasma/corona.cpp:182
#29 0x00007f5366dc533a in PlasmaApp::corona (this=this@entry=0x1a2efa0, createIfMissing=createIfMissing@entry=true) at ../../../../plasma/desktop/shell/plasmaapp.cpp:856
#30 0x00007f5366dc5945 in PlasmaApp::setupDesktop (this=0x1a2efa0) at ../../../../plasma/desktop/shell/plasmaapp.cpp:314
#31 0x00007f5366dc9ca5 in PlasmaApp::qt_static_metacall (_o=0x1a2efa0, _id=49837424, _a=0x3156580, _c=<optimized out>) at ./plasmaapp.moc:128
#32 0x00007f5363668c1e in QObject::event (this=this@entry=0x1a2efa0, e=e@entry=0x1b8eba0) at kernel/qobject.cpp:1194
#33 0x00007f5363654cfc in QCoreApplication::event (this=this@entry=0x1a2efa0, e=e@entry=0x1b8eba0) at kernel/qcoreapplication.cpp:1765
#34 0x00007f53629eeed3 in QApplication::event (this=0x1a2efa0, e=0x1b8eba0) at kernel/qapplication.cpp:2549
#35 0x00007f53629e9e2c in QApplicationPrivate::notify_helper (this=this@entry=0x1a33230, receiver=receiver@entry=0x1a2efa0, e=e@entry=0x1b8eba0) at kernel/qapplication.cpp:4567
#36 0x00007f53629f04a0 in QApplication::notify (this=this@entry=0x1a2efa0, receiver=receiver@entry=0x1a2efa0, e=e@entry=0x1b8eba0) at kernel/qapplication.cpp:4353
#37 0x00007f5364315cca in KApplication::notify (this=0x1a2efa0, receiver=0x1a2efa0, event=0x1b8eba0) at ../../kdeui/kernel/kapplication.cpp:311
#38 0x00007f53636504dd in QCoreApplication::notifyInternal (this=0x1a2efa0, receiver=receiver@entry=0x1a2efa0, event=event@entry=0x1b8eba0) at kernel/qcoreapplication.cpp:953
#39 0x00007f5363653b3d in sendEvent (event=0x1b8eba0, receiver=0x1a2efa0) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#40 QCoreApplicationPrivate::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0, data=0x19af090) at kernel/qcoreapplication.cpp:1577
#41 0x00007f5363653fe3 in QCoreApplication::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0) at kernel/qcoreapplication.cpp:1470
#42 0x00007f536367df83 in sendPostedEvents () at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:236
#43 postEventSourceDispatch (s=0x1a34ca0) at kernel/qeventdispatcher_glib.cpp:287
#44 0x00007f535a2cce04 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#45 0x00007f535a2cd048 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#46 0x00007f535a2cd0ec in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#47 0x00007f536367d7a1 in QEventDispatcherGlib::processEvents (this=0x19b0990, flags=...) at kernel/qeventdispatcher_glib.cpp:434
#48 0x00007f5362a8bbe6 in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#49 0x00007f536364f0af in QEventLoop::processEvents (this=this@entry=0x7fff14da9240, flags=...) at kernel/qeventloop.cpp:149
#50 0x00007f536364f3a5 in QEventLoop::exec (this=this@entry=0x7fff14da9240, flags=...) at kernel/qeventloop.cpp:204
#51 0x00007f5363654b79 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1225
#52 0x00007f53629e837c in QApplication::exec () at kernel/qapplication.cpp:3828
#53 0x00007f5366db067c in kdemain (argc=1, argv=0x7fff14da9498) at ../../../../plasma/desktop/shell/main.cpp:126
#54 0x00007f53669d0ec5 in __libc_start_main (main=0x4006e0 <main(int, char**)>, argc=1, argv=0x7fff14da9498, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fff14da9488) at libc-start.c:287
#55 0x000000000040070e in _start ()

Possible duplicates by query: bug 346040.

Reported using DrKonqi