Application: plasma-desktop (4.11.11)
KDE Platform Version: 4.14.2
Qt Version: 4.8.6
Operating System: Linux 3.13.0-37-generic x86_64
Distribution: Linux Mint 17.1 Rebecca

-- Information about the crash:
- What I was doing when the application crashed: nothing, just logging in kde plasma desktop

- Unusual behavior I noticed: black screen

Error message: Executable: plasma-desktop PID: 5207 Signal: Segmentation fault (11) Ora: 24/9/2015 22:37:29

-- 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 0x7f0c439647c0 (LWP 5207))]

Thread 4 (Thread 0x7f0c1ca21700 (LWP 5210)):
#0  0x00007f0c4325e12d in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f0c36a8efe4 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f0c36a8f0ec in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f0c3fe3f7be in QEventDispatcherGlib::processEvents (this=0x7f0c180008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:436
#4  0x00007f0c3fe110af in QEventLoop::processEvents (this=this@entry=0x7f0c1ca20de0, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007f0c3fe113a5 in QEventLoop::exec (this=this@entry=0x7f0c1ca20de0, flags=...) at kernel/qeventloop.cpp:204
#6  0x00007f0c3fd0dc5f in QThread::exec (this=this@entry=0x1596c80) at thread/qthread.cpp:537
#7  0x00007f0c3fdf2823 in QInotifyFileSystemWatcherEngine::run (this=0x1596c80) at io/qfilesystemwatcher_inotify.cpp:265
#8  0x00007f0c3fd1032f in QThreadPrivate::start (arg=0x1596c80) at thread/qthread_unix.cpp:349
#9  0x00007f0c371a0182 in start_thread (arg=0x7f0c1ca21700) at pthread_create.c:312
#10 0x00007f0c4326b47d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 3 (Thread 0x7f0c13b4d700 (LWP 5215)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f0c3c629ffb in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#2  0x00007f0c3c62a039 in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#3  0x00007f0c371a0182 in start_thread (arg=0x7f0c13b4d700) at pthread_create.c:312
#4  0x00007f0c4326b47d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 2 (Thread 0x7f0b83ca7700 (LWP 5271)):
#0  0x00007f0c4325e12d in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f0c36a8efe4 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f0c36a8f30a in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f0b847a3336 in ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#4  0x00007f0c36ab3f05 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f0c371a0182 in start_thread (arg=0x7f0b83ca7700) at pthread_create.c:312
#6  0x00007f0c4326b47d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 1 (Thread 0x7f0c439647c0 (LWP 5207)):
[KCrash Handler]
#6  ref (this=0x0) at ../../include/QtCore/../../src/corelib/arch/qatomic_x86_64.h:121
#7  QString::operator= (this=0x7fff10b1e550, other=...) at tools/qstring.cpp:1410
#8  0x00007f0b79afc5da in ?? () from /usr/lib/kde4/plasma_engine_wicd.so
#9  0x00007f0c42d8bec1 in Plasma::DataEngineManager::loadEngine (this=0x1886700, name=...) at ../../plasma/dataenginemanager.cpp:140
#10 0x00007f0c42dbd22b in Plasma::DataEngineConsumer::dataEngine (this=0x22c99e0, name=...) at ../../plasma/private/dataengineconsumer.cpp:105
#11 0x00007f0c42d5484c in Plasma::Applet::dataEngine (this=0x22c95a0, name=...) at ../../plasma/applet.cpp:685
#12 0x00007f0b85fc14d8 in ?? () from /usr/lib/kde4/plasma_applet_wicd.so
#13 0x00007f0c15007200 in SystemTray::PlasmoidTask::createWidget (this=0x1dead20, host=<optimized out>) at ../../../../../plasma/generic/applets/systemtray/protocols/plasmoid/plasmoidtask.cpp:100
#14 0x00007f0c14fff640 in SystemTray::Task::widget (this=this@entry=0x1dead20, host=host@entry=0x19782d0, createIfNecessary=createIfNecessary@entry=true) at ../../../../../plasma/generic/applets/systemtray/core/task.cpp:76
#15 0x00007f0c15013010 in SystemTray::Applet::_onAddedTask (this=this@entry=0x19782d0, task=0x1dead20) at ../../../../../plasma/generic/applets/systemtray/ui/applet.cpp:196
#16 0x00007f0c150133cb in SystemTray::Applet::_onWidgetCreationFinished (this=0x19782d0) at ../../../../../plasma/generic/applets/systemtray/ui/applet.cpp:278
#17 0x00007f0c150136a5 in SystemTray::Applet::qt_static_metacall (_o=0x7fff10b1e550, _id=1075284056, _a=0x7fff10b1eb80, _c=<optimized out>) at ./applet.moc:143
#18 0x00007f0c3fe2687a in QMetaObject::activate (sender=0x1adeaf0, m=m@entry=0x7f0c43163040 <Plasma::DeclarativeWidget::staticMetaObject>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x0) at kernel/qobject.cpp:3539
#19 0x00007f0c42e2b7d0 in Plasma::DeclarativeWidget::finished (this=<optimized out>) at ./declarativewidget.moc:156
#20 0x00007f0c42e2bf2f in Plasma::DeclarativeWidgetPrivate::finishExecute (this=0x14fcb30) at ../../plasma/widgets/declarativewidget.cpp:216
#21 0x00007f0c3fe2ac1e in QObject::event (this=this@entry=0x1adeaf0, e=e@entry=0x1b6b810) at kernel/qobject.cpp:1194
#22 0x00007f0c3f7ab4fb in QGraphicsWidget::event (this=0x1adeaf0, event=0x1b6b810) at graphicsview/qgraphicswidget.cpp:1461
#23 0x00007f0c3f1abe2c in QApplicationPrivate::notify_helper (this=this@entry=0x11db080, receiver=receiver@entry=0x1adeaf0, e=e@entry=0x1b6b810) at kernel/qapplication.cpp:4567
#24 0x00007f0c3f1b24a0 in QApplication::notify (this=this@entry=0x11d6a10, receiver=receiver@entry=0x1adeaf0, e=e@entry=0x1b6b810) at kernel/qapplication.cpp:4353
#25 0x00007f0c40ad7cca in KApplication::notify (this=0x11d6a10, receiver=0x1adeaf0, event=0x1b6b810) at ../../kdeui/kernel/kapplication.cpp:311
#26 0x00007f0c3fe124dd in QCoreApplication::notifyInternal (this=0x11d6a10, receiver=receiver@entry=0x1adeaf0, event=event@entry=0x1b6b810) at kernel/qcoreapplication.cpp:953
#27 0x00007f0c3fe15b3d in sendEvent (event=0x1b6b810, receiver=0x1adeaf0) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#28 QCoreApplicationPrivate::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0, data=0x1152090) at kernel/qcoreapplication.cpp:1577
#29 0x00007f0c3fe15fe3 in QCoreApplication::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0) at kernel/qcoreapplication.cpp:1470
#30 0x00007f0c3fe3ff83 in sendPostedEvents () at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:236
#31 postEventSourceDispatch (s=0x11e8bb0) at kernel/qeventdispatcher_glib.cpp:287
#32 0x00007f0c36a8ee04 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#33 0x00007f0c36a8f048 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#34 0x00007f0c36a8f0ec in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#35 0x00007f0c3fe3f7a1 in QEventDispatcherGlib::processEvents (this=0x1153990, flags=...) at kernel/qeventdispatcher_glib.cpp:434
#36 0x00007f0c3f24dbe6 in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#37 0x00007f0c3fe110af in QEventLoop::processEvents (this=this@entry=0x7fff10b1f2e0, flags=...) at kernel/qeventloop.cpp:149
#38 0x00007f0c3fe113a5 in QEventLoop::exec (this=this@entry=0x7fff10b1f2e0, flags=...) at kernel/qeventloop.cpp:204
#39 0x00007f0c3fe16b79 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1225
#40 0x00007f0c3f1aa37c in QApplication::exec () at kernel/qapplication.cpp:3828
#41 0x00007f0c4357267c in kdemain (argc=1, argv=0x7fff10b1f538) at ../../../../plasma/desktop/shell/main.cpp:126
#42 0x00007f0c43192ec5 in __libc_start_main (main=0x4006e0 <main(int, char**)>, argc=1, argv=0x7fff10b1f538, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fff10b1f528) at libc-start.c:287
#43 0x000000000040070e in _start ()

Reported using DrKonqi