Application: plasma-desktop (4.11.9)
KDE Platform Version: 4.13.0
Qt Version: 4.8.6
Operating System: Linux 3.13.0-27-generic x86_64
Distribution: Ubuntu 14.04 LTS

-- Information about the crash:
- What I was doing when the application crashed: I opened up my Internet Browser (google chrome) and suddenly the KDE plasma environment disappeared and reappered after a few seconds. I opened the browser about 30 seconds after i logged in the system

-- Backtrace:
Application: Plasma Desktop Shell (plasma-desktop), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7fddf82fb7c0 (LWP 2134))]

Thread 4 (Thread 0x7fddcda75700 (LWP 2135)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fddf0fa0ffb in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#2  0x00007fddf0fa1039 in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#3  0x00007fddeb84d182 in start_thread (arg=0x7fddcda75700) at pthread_create.c:312
#4  0x00007fddf7bee30d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 3 (Thread 0x7fdd47a28700 (LWP 2139)):
#0  0x00007fddeb8507ee in __pthread_mutex_unlock_usercnt (decr=1, mutex=0x7fdd40000a60) at pthread_mutex_unlock.c:57
#1  __GI___pthread_mutex_unlock (mutex=0x7fdd40000a60) at pthread_mutex_unlock.c:310
#2  0x00007fddeb17d9c1 in g_mutex_unlock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fddeb13ba59 in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fddeb13bf7b in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007fddeb13c0ec in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007fddf47b67be in QEventDispatcherGlib::processEvents (this=0x7fdd400008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:436
#7  0x00007fddf47880af in QEventLoop::processEvents (this=this@entry=0x7fdd47a27de0, flags=...) at kernel/qeventloop.cpp:149
#8  0x00007fddf47883a5 in QEventLoop::exec (this=this@entry=0x7fdd47a27de0, flags=...) at kernel/qeventloop.cpp:204
#9  0x00007fddf4684c5f in QThread::exec (this=this@entry=0x316df70) at thread/qthread.cpp:537
#10 0x00007fddf4769823 in QInotifyFileSystemWatcherEngine::run (this=0x316df70) at io/qfilesystemwatcher_inotify.cpp:265
#11 0x00007fddf468732f in QThreadPrivate::start (arg=0x316df70) at thread/qthread_unix.cpp:349
#12 0x00007fddeb84d182 in start_thread (arg=0x7fdd47a28700) at pthread_create.c:312
#13 0x00007fddf7bee30d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 2 (Thread 0x7fdd4658d700 (LWP 2140)):
#0  0x00007fddf7bdf6bd in read () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007fddeb17cc20 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fddeb13bb14 in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fddeb13bf7b in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fddeb13c0ec in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007fddf47b67be in QEventDispatcherGlib::processEvents (this=0x7fdd380008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:436
#6  0x00007fddf47880af in QEventLoop::processEvents (this=this@entry=0x7fdd4658cde0, flags=...) at kernel/qeventloop.cpp:149
#7  0x00007fddf47883a5 in QEventLoop::exec (this=this@entry=0x7fdd4658cde0, flags=...) at kernel/qeventloop.cpp:204
#8  0x00007fddf4684c5f in QThread::exec (this=this@entry=0x328d610) at thread/qthread.cpp:537
#9  0x00007fddf4769823 in QInotifyFileSystemWatcherEngine::run (this=0x328d610) at io/qfilesystemwatcher_inotify.cpp:265
#10 0x00007fddf468732f in QThreadPrivate::start (arg=0x328d610) at thread/qthread_unix.cpp:349
#11 0x00007fddeb84d182 in start_thread (arg=0x7fdd4658d700) at pthread_create.c:312
#12 0x00007fddf7bee30d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 1 (Thread 0x7fddf82fb7c0 (LWP 2134)):
[KCrash Handler]
#6  QDeclarativeExpression::hasError (this=0x1) at qml/qdeclarativeexpression.cpp:769
#7  0x00007fddf642730b in QDeclarativeBoundSignal::qt_metacall (this=0x49351e0, c=<optimized out>, id=<optimized out>, a=0x7fffe6825940) at qml/qdeclarativeboundsignal.cpp:200
#8  0x00007fddf479da78 in QMetaObject::activate (sender=sender@entry=0x49abb40, m=m@entry=0x7fdd4c8b0b20 <MouseEventListener::staticMetaObject>, local_signal_index=local_signal_index@entry=1, argv=argv@entry=0x7fffe6825940) at kernel/qobject.cpp:3569
#9  0x00007fdd4c6a75f7 in positionChanged (_t1=0x7fffe6825950, this=0x49abb40) at ./mouseeventlistener.moc:374
#10 MouseEventListener::mouseMoveEvent (this=0x49abb40, me=<optimized out>) at ../../../../plasma/declarativeimports/qtextracomponents/mouseeventlistener.cpp:121
#11 0x00007fddf40cc6d6 in QGraphicsItem::sceneEvent (this=this@entry=0x49abb50, event=event@entry=0x7fffe6825df0) at graphicsview/qgraphicsitem.cpp:6749
#12 0x00007fddf63847c4 in QDeclarativeItem::sceneEvent (this=0x49abb40, event=0x7fffe6825df0) at graphicsitems/qdeclarativeitem.cpp:3081
#13 0x00007fddf40f35af in QGraphicsScenePrivate::sendMouseEvent (this=0x2697fa0, mouseEvent=0x7fffe6825df0) at graphicsview/qgraphicsscene.cpp:1295
#14 0x00007fddf40fc176 in QGraphicsScene::mouseMoveEvent (this=<optimized out>, mouseEvent=0x7fffe6825df0) at graphicsview/qgraphicsscene.cpp:4102
#15 0x00007fddf410805c in QGraphicsScene::event (this=0x27e2e30, event=0x7fffe6825df0) at graphicsview/qgraphicsscene.cpp:3451
#16 0x00007fddf3b22e2c in QApplicationPrivate::notify_helper (this=this@entry=0x24ef930, receiver=receiver@entry=0x27e2e30, e=e@entry=0x7fffe6825df0) at kernel/qapplication.cpp:4567
#17 0x00007fddf3b294a0 in QApplication::notify (this=this@entry=0x24e0c80, receiver=receiver@entry=0x27e2e30, e=e@entry=0x7fffe6825df0) at kernel/qapplication.cpp:4353
#18 0x00007fddf544ebaa in KApplication::notify (this=0x24e0c80, receiver=0x27e2e30, event=0x7fffe6825df0) at ../../kdeui/kernel/kapplication.cpp:311
#19 0x00007fddf47894dd in QCoreApplication::notifyInternal (this=0x24e0c80, receiver=0x27e2e30, event=event@entry=0x7fffe6825df0) at kernel/qcoreapplication.cpp:953
#20 0x00007fddf3b21556 in sendSpontaneousEvent (event=event@entry=0x7fffe6825df0, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:234
#21 qt_sendSpontaneousEvent (receiver=<optimized out>, event=event@entry=0x7fffe6825df0) at kernel/qapplication.cpp:5565
#22 0x00007fddf411d25c in QGraphicsViewPrivate::mouseMoveEventHandler (this=this@entry=0x3f81940, event=event@entry=0x7fffe6826440) at graphicsview/qgraphicsview.cpp:646
#23 0x00007fddf411e16a in QGraphicsView::mouseMoveEvent (this=0x3eb0020, event=0x7fffe6826440) at graphicsview/qgraphicsview.cpp:3276
#24 0x00007fddf3b72635 in QWidget::event (this=this@entry=0x3eb0020, event=event@entry=0x7fffe6826440) at kernel/qwidget.cpp:8361
#25 0x00007fddf3f13fce in QFrame::event (this=0x3eb0020, e=0x7fffe6826440) at widgets/qframe.cpp:557
#26 0x00007fddf411f7b9 in QGraphicsView::viewportEvent (this=0x3eb0020, event=0x7fffe6826440) at graphicsview/qgraphicsview.cpp:2866
#27 0x00007fddf4789646 in QCoreApplicationPrivate::sendThroughObjectEventFilters (this=this@entry=0x24ef930, receiver=receiver@entry=0x3f96af0, event=event@entry=0x7fffe6826440) at kernel/qcoreapplication.cpp:1063
#28 0x00007fddf3b22e0c in QApplicationPrivate::notify_helper (this=this@entry=0x24ef930, receiver=receiver@entry=0x3f96af0, e=e@entry=0x7fffe6826440) at kernel/qapplication.cpp:4563
#29 0x00007fddf3b295dd in QApplication::notify (this=this@entry=0x24e0c80, receiver=receiver@entry=0x3f96af0, e=e@entry=0x7fffe6826440) at kernel/qapplication.cpp:4110
#30 0x00007fddf544ebaa in KApplication::notify (this=0x24e0c80, receiver=0x3f96af0, event=0x7fffe6826440) at ../../kdeui/kernel/kapplication.cpp:311
#31 0x00007fddf47894dd in QCoreApplication::notifyInternal (this=0x24e0c80, receiver=receiver@entry=0x3f96af0, event=event@entry=0x7fffe6826440) at kernel/qcoreapplication.cpp:953
#32 0x00007fddf3b28d93 in sendEvent (event=<optimized out>, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#33 QApplicationPrivate::sendMouseEvent (receiver=receiver@entry=0x3f96af0, event=event@entry=0x7fffe6826440, alienWidget=alienWidget@entry=0x3f96af0, nativeWidget=nativeWidget@entry=0x3eb0020, buttonDown=buttonDown@entry=0x7fddf4608318 <qt_button_down>, lastMouseReceiver=..., spontaneous=spontaneous@entry=true) at kernel/qapplication.cpp:3178
#34 0x00007fddf3b9d9cb in QETWidget::translateMouseEvent (this=this@entry=0x3eb0020, event=event@entry=0x7fffe68267c0) at kernel/qapplication_x11.cpp:4634
#35 0x00007fddf3b9d269 in QApplication::x11ProcessEvent (this=0x24e0c80, event=event@entry=0x7fffe68267c0) at kernel/qapplication_x11.cpp:3627
#36 0x00007fddf3bc4b02 in x11EventSourceDispatch (s=0x24f0050, callback=0x0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#37 0x00007fddeb13be04 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#38 0x00007fddeb13c048 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#39 0x00007fddeb13c0ec in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#40 0x00007fddf47b67a1 in QEventDispatcherGlib::processEvents (this=0x24f51d0, flags=...) at kernel/qeventdispatcher_glib.cpp:434
#41 0x00007fddf3bc4bb6 in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#42 0x00007fddf47880af in QEventLoop::processEvents (this=this@entry=0x7fffe6826b90, flags=...) at kernel/qeventloop.cpp:149
#43 0x00007fddf47883a5 in QEventLoop::exec (this=this@entry=0x7fffe6826b90, flags=...) at kernel/qeventloop.cpp:204
#44 0x00007fddf478db79 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1225
#45 0x00007fddf3b2137c in QApplication::exec () at kernel/qapplication.cpp:3828
#46 0x00007fddf7ef566c in kdemain (argc=1, argv=0x7fffe6826de8) at ../../../../plasma/desktop/shell/main.cpp:126
#47 0x00007fddf7b14ec5 in __libc_start_main (main=0x4006e0 <main(int, char**)>, argc=1, argv=0x7fffe6826de8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fffe6826dd8) at libc-start.c:287
#48 0x000000000040070e in _start ()

Possible duplicates by query: bug 335426, bug 334620, bug 334194, bug 333043, bug 331640.

Reported using DrKonqi