I don't know exactly when it started, but kded4 is crashing on login and refuses to start again when invoked.

Reproducible: Always

Steps to Reproduce:
1. Login
Actual Results:  
kded4 crashes, the bug report tool pops up

Expected Results:  
kded4 shouldn't crash

Here is the stack trace for the crash.

Application: KDE Daemon (kded4), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f5e0b2c27c0 (LWP 4802))]

Thread 6 (Thread 0x7f5dee630700 (LWP 4817)):
#0  0x00007f5e0abee3cd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f5e060821dc in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f5e06082304 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f5e08a6b036 in QEventDispatcherGlib::processEvents (this=0x7f5de80008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#4  0x00007f5e08a3b38f in QEventLoop::processEvents (this=this@entry=0x7f5dee62fd90, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007f5e08a3b618 in QEventLoop::exec (this=this@entry=0x7f5dee62fd90, flags=...) at kernel/qeventloop.cpp:204
#6  0x00007f5e0893d410 in QThread::exec (this=this@entry=0xf8e570) at thread/qthread.cpp:542
#7  0x00007f5e08a1cedf in QInotifyFileSystemWatcherEngine::run (this=0xf8e570) at io/qfilesystemwatcher_inotify.cpp:256
#8  0x00007f5e0893fbec in QThreadPrivate::start (arg=0xf8e570) at thread/qthread_unix.cpp:338
#9  0x00007f5e06554f8e in start_thread (arg=0x7f5dee630700) at pthread_create.c:311
#10 0x00007f5e0abfae1d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113

Thread 5 (Thread 0x7f5dd66b7700 (LWP 4827)):
#0  0x00007f5e0abee3cd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f5e060821dc in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f5e060826ba in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f5dd69a74f6 in ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#4  0x00007f5e060a5eb5 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f5e06554f8e in start_thread (arg=0x7f5dd66b7700) at pthread_create.c:311
#6  0x00007f5e0abfae1d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113

Thread 4 (Thread 0x7f5dd5caa700 (LWP 4828)):
#0  0x00007f5e0abee3cd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f5e060821dc in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f5e06082304 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f5e08a6b036 in QEventDispatcherGlib::processEvents (this=0x7f5db40008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#4  0x00007f5e08a3b38f in QEventLoop::processEvents (this=this@entry=0x7f5dd5ca9d80, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007f5e08a3b618 in QEventLoop::exec (this=this@entry=0x7f5dd5ca9d80, flags=...) at kernel/qeventloop.cpp:204
#6  0x00007f5e0893d410 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:542
#7  0x00007f5decd556e5 in KCupsConnection::run() () from /usr/lib/libkcupslib.so
#8  0x00007f5e0893fbec in QThreadPrivate::start (arg=0xf9df90) at thread/qthread_unix.cpp:338
#9  0x00007f5e06554f8e in start_thread (arg=0x7f5dd5caa700) at pthread_create.c:311
#10 0x00007f5e0abfae1d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113

Thread 3 (Thread 0x7f5dd54a9700 (LWP 4829)):
#0  0x00007f5e0abee3cd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f5e060821dc in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f5e06082304 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f5e08a6b016 in QEventDispatcherGlib::processEvents (this=0x7f5da80008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#4  0x00007f5e08a3b38f in QEventLoop::processEvents (this=this@entry=0x7f5dd54a8dc0, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007f5e08a3b618 in QEventLoop::exec (this=this@entry=0x7f5dd54a8dc0, flags=...) at kernel/qeventloop.cpp:204
#6  0x00007f5e0893d410 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:542
#7  0x00007f5e0893fbec in QThreadPrivate::start (arg=0x100e7a0) at thread/qthread_unix.cpp:338
#8  0x00007f5e06554f8e in start_thread (arg=0x7f5dd54a9700) at pthread_create.c:311
#9  0x00007f5e0abfae1d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113

Thread 2 (Thread 0x7f5dd4ca8700 (LWP 4830)):
#0  0x00007f5e0abf3233 in select () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f5e08a1b132 in QProcessManager::run (this=0x7f5e08d9a540 <processManager()::processManager>) at io/qprocess_unix.cpp:245
#2  0x00007f5e0893fbec in QThreadPrivate::start (arg=0x7f5e08d9a540 <processManager()::processManager>) at thread/qthread_unix.cpp:338
#3  0x00007f5e06554f8e in start_thread (arg=0x7f5dd4ca8700) at pthread_create.c:311
#4  0x00007f5e0abfae1d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113

Thread 1 (Thread 0x7f5e0b2c27c0 (LWP 4802)):
[KCrash Handler]
#6  KScreen::Output::id (this=this@entry=0x0) at /build/buildd/libkscreen-1.0.1/src/output.cpp:104
#7  0x00007f5def098d42 in Generator::displaySwitch (this=this@entry=0xf79f80, iteration=iteration@entry=1) at /build/buildd/kscreen-1.0.1/kded/generator.cpp:133
#8  0x00007f5def099f8b in Generator::fallbackIfNeeded (this=this@entry=0xf79f80, config=config@entry=0x1041230) at /build/buildd/kscreen-1.0.1/kded/generator.cpp:98
#9  0x00007f5def09ac3d in Generator::idealConfig (this=0xf79f80) at /build/buildd/kscreen-1.0.1/kded/generator.cpp:90
#10 0x00007f5def092e46 in KScreenDaemon::applyIdealConfig (this=this@entry=0xf27010) at /build/buildd/kscreen-1.0.1/kded/daemon.cpp:118
#11 0x00007f5def0930cd in KScreenDaemon::applyConfig (this=0xf27010) at /build/buildd/kscreen-1.0.1/kded/daemon.cpp:98
#12 0x00007f5e08a510ef in QMetaObject::activate (sender=0xf79f80, m=<optimized out>, local_signal_index=<optimized out>, argv=0x0) at kernel/qobject.cpp:3539
#13 0x00007f5e08a510ef in QMetaObject::activate (sender=sender@entry=0xd94f00, m=m@entry=0x7f5def2a1b40 <Device::staticMetaObject>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x0) at kernel/qobject.cpp:3539
#14 0x00007f5def09bc00 in Device::ready (this=this@entry=0xd94f00) at /build/buildd/kscreen-1.0.1/obj-x86_64-linux-gnu/kded/device.moc:113
#15 0x00007f5def09bc19 in Device::setReady (this=this@entry=0xd94f00) at /build/buildd/kscreen-1.0.1/kded/device.cpp:80
#16 0x00007f5def09c864 in Device::isLaptopFetched (this=0xd94f00, watcher=0xfaf8d0) at /build/buildd/kscreen-1.0.1/kded/device.cpp:122
#17 0x00007f5e08a510ef in QMetaObject::activate (sender=0xfaf8d0, m=m@entry=0x7f5e090145c0 <QDBusPendingCallWatcher::staticMetaObject>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x7fff128eec30) at kernel/qobject.cpp:3539
#18 0x00007f5e08df73ef in QDBusPendingCallWatcher::finished (this=<optimized out>, _t1=0xfaf8d0) at .moc/release-shared/moc_qdbuspendingcall.cpp:106
#19 0x00007f5e08a565be in QObject::event (this=0xfaf8d0, e=<optimized out>) at kernel/qobject.cpp:1194
#20 0x00007f5e096a18ec in QApplicationPrivate::notify_helper (this=this@entry=0xcc07a0, receiver=receiver@entry=0xfaf8d0, e=e@entry=0x1084c20) at kernel/qapplication.cpp:4567
#21 0x00007f5e096a425b in QApplication::notify (this=this@entry=0x7fff128f2be0, receiver=receiver@entry=0xfaf8d0, e=e@entry=0x1084c20) at kernel/qapplication.cpp:4428
#22 0x00007f5e0a3ad1a6 in KApplication::notify (this=0x7fff128f2be0, receiver=0xfaf8d0, event=0x1084c20) at ../../kdeui/kernel/kapplication.cpp:311
#23 0x00007f5e08a3c63e in QCoreApplication::notifyInternal (this=0x7fff128f2be0, receiver=receiver@entry=0xfaf8d0, event=event@entry=0x1084c20) at kernel/qcoreapplication.cpp:946
#24 0x00007f5e08a40171 in sendEvent (event=0x1084c20, receiver=0xfaf8d0) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#25 QCoreApplicationPrivate::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0, data=0xc8d150) at kernel/qcoreapplication.cpp:1570
#26 0x00007f5e08a404a3 in QCoreApplication::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0) at kernel/qcoreapplication.cpp:1463
#27 0x00007f5e08a6ae83 in sendPostedEvents () at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:236
#28 postEventSourceDispatch (s=0xcc0cf0) at kernel/qeventdispatcher_glib.cpp:279
#29 0x00007f5e06081f05 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#30 0x00007f5e06082248 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#31 0x00007f5e06082304 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#32 0x00007f5e08a6b016 in QEventDispatcherGlib::processEvents (this=0xcc0730, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#33 0x00007f5e097471ae in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#34 0x00007f5e08a3b38f in QEventLoop::processEvents (this=this@entry=0x7fff128ef690, flags=...) at kernel/qeventloop.cpp:149
#35 0x00007f5e08a3b618 in QEventLoop::exec (this=this@entry=0x7fff128ef690, flags=...) at kernel/qeventloop.cpp:204
#36 0x00007f5e08dc2ef6 in QDBusConnectionPrivate::sendWithReply (this=0xe258b0, message=..., sendMode=<optimized out>, timeout=-1) at qdbusintegrator.cpp:1932
#37 0x00007f5e08daf82b in QDBusConnection::call (this=0x7fff128ef7e0, message=..., mode=<optimized out>, timeout=<optimized out>) at qdbusconnection.cpp:597
#38 0x00007f5df93df58b in ?? () from /usr/lib/kde4/kded_colord.so
#39 0x00007f5df93e0f19 in ?? () from /usr/lib/kde4/kded_colord.so
#40 0x00007f5e08a510ef in QMetaObject::activate (sender=sender@entry=0xf16340, m=<optimized out>, local_signal_index=local_signal_index@entry=21, argv=argv@entry=0x7fff128efe40) at kernel/qobject.cpp:3539
#41 0x00007f5e08dd2781 in QDBusInterfacePrivate::metacall (this=0xf166e0, c=<optimized out>, id=21, argv=0x7fff128efe40) at qdbusinterface.cpp:278
#42 0x00007f5e08dbf063 in QDBusConnectionPrivate::deliverCall (this=0xe258b0, object=0xf16340, msg=..., metaTypes=..., slotIdx=26) at qdbusintegrator.cpp:951
#43 0x00007f5e08a565be in QObject::event (this=0xf16340, e=<optimized out>) at kernel/qobject.cpp:1194
#44 0x00007f5e096a18ec in QApplicationPrivate::notify_helper (this=this@entry=0xcc07a0, receiver=receiver@entry=0xf16340, e=e@entry=0x1085c90) at kernel/qapplication.cpp:4567
#45 0x00007f5e096a425b in QApplication::notify (this=this@entry=0x7fff128f2be0, receiver=receiver@entry=0xf16340, e=e@entry=0x1085c90) at kernel/qapplication.cpp:4428
#46 0x00007f5e0a3ad1a6 in KApplication::notify (this=0x7fff128f2be0, receiver=0xf16340, event=0x1085c90) at ../../kdeui/kernel/kapplication.cpp:311
#47 0x00007f5e08a3c63e in QCoreApplication::notifyInternal (this=0x7fff128f2be0, receiver=receiver@entry=0xf16340, event=event@entry=0x1085c90) at kernel/qcoreapplication.cpp:946
#48 0x00007f5e08a40171 in sendEvent (event=0x1085c90, receiver=0xf16340) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#49 QCoreApplicationPrivate::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0, data=0xc8d150) at kernel/qcoreapplication.cpp:1570
#50 0x00007f5e08a404a3 in QCoreApplication::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0) at kernel/qcoreapplication.cpp:1463
#51 0x00007f5e08a6ae83 in sendPostedEvents () at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:236
#52 postEventSourceDispatch (s=0xcc0cf0) at kernel/qeventdispatcher_glib.cpp:279
#53 0x00007f5e06081f05 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#54 0x00007f5e06082248 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#55 0x00007f5e06082304 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#56 0x00007f5e08a6b016 in QEventDispatcherGlib::processEvents (this=0xcc0730, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#57 0x00007f5e097471ae in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#58 0x00007f5e08a3b38f in QEventLoop::processEvents (this=this@entry=0x7fff128f07d0, flags=...) at kernel/qeventloop.cpp:149
#59 0x00007f5e08a3b618 in QEventLoop::exec (this=this@entry=0x7fff128f07d0, flags=...) at kernel/qeventloop.cpp:204
#60 0x00007f5dd7066d13 in KAuth::Polkit1Backend::actionExists (this=0x1048c90, action=...) at ../../kdecore/auth/backends/polkit-1/Polkit1Backend.cpp:219
#61 0x00007f5e09165f98 in setName (name=..., this=<optimized out>) at ../../kdecore/auth/kauthaction.cpp:110
#62 KAuth::Action::setName (this=<optimized out>, name=...) at ../../kdecore/auth/kauthaction.cpp:103
#63 0x00007f5e0916601a in KAuth::Action::Action (this=0x7fff128f08a0, name=...) at ../../kdecore/auth/kauthaction.cpp:61
#64 0x00007f5df8b326de in PowerDevilUPowerBackend::brightness (this=0xf3c4f0, type=<optimized out>) at ../../../powerdevil/daemon/backends/upower/powerdevilupowerbackend.cpp:240
#65 0x00007f5df8b34a46 in PowerDevilUPowerBackend::init (this=0xf3c4f0) at ../../../powerdevil/daemon/backends/upower/powerdevilupowerbackend.cpp:135
#66 0x00007f5df88fcb11 in PowerDevil::Core::loadCore (this=0x1048ba0, backend=backend@entry=0xf3c4f0) at ../../../powerdevil/daemon/powerdevilcore.cpp:84
#67 0x00007f5df8b2c403 in KDEDPowerDevil::init (this=0xf267b0) at ../../../powerdevil/daemon/kdedpowerdevil.cpp:89
#68 0x00007f5e08a565be in QObject::event (this=0xf267b0, e=<optimized out>) at kernel/qobject.cpp:1194
#69 0x00007f5e096a18ec in QApplicationPrivate::notify_helper (this=this@entry=0xcc07a0, receiver=receiver@entry=0xf267b0, e=e@entry=0xf273e0) at kernel/qapplication.cpp:4567
#70 0x00007f5e096a425b in QApplication::notify (this=this@entry=0x7fff128f2be0, receiver=receiver@entry=0xf267b0, e=e@entry=0xf273e0) at kernel/qapplication.cpp:4428
#71 0x00007f5e0a3ad1a6 in KApplication::notify (this=0x7fff128f2be0, receiver=0xf267b0, event=0xf273e0) at ../../kdeui/kernel/kapplication.cpp:311
#72 0x00007f5e08a3c63e in QCoreApplication::notifyInternal (this=0x7fff128f2be0, receiver=receiver@entry=0xf267b0, event=event@entry=0xf273e0) at kernel/qcoreapplication.cpp:946
#73 0x00007f5e08a40171 in sendEvent (event=0xf273e0, receiver=0xf267b0) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#74 QCoreApplicationPrivate::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0, data=0xc8d150) at kernel/qcoreapplication.cpp:1570
#75 0x00007f5e08a404a3 in QCoreApplication::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0) at kernel/qcoreapplication.cpp:1463
#76 0x00007f5e08a6ae83 in sendPostedEvents () at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:236
#77 postEventSourceDispatch (s=0xcc0cf0) at kernel/qeventdispatcher_glib.cpp:279
#78 0x00007f5e06081f05 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#79 0x00007f5e06082248 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#80 0x00007f5e06082304 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#81 0x00007f5e08a6b016 in QEventDispatcherGlib::processEvents (this=0xcc0730, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#82 0x00007f5e097471ae in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#83 0x00007f5e08a3b38f in QEventLoop::processEvents (this=this@entry=0x7fff128f1c00, flags=...) at kernel/qeventloop.cpp:149
#84 0x00007f5e08a3b618 in QEventLoop::exec (this=this@entry=0x7fff128f1c00, flags=...) at kernel/qeventloop.cpp:204
#85 0x00007f5e08dc2ef6 in QDBusConnectionPrivate::sendWithReply (this=0xe258b0, message=..., sendMode=<optimized out>, timeout=-1) at qdbusintegrator.cpp:1932
#86 0x00007f5e08daf82b in QDBusConnection::call (this=0x7fff128f1dd0, message=..., mode=<optimized out>, timeout=<optimized out>) at qdbusconnection.cpp:597
#87 0x00007f5df93e0278 in ?? () from /usr/lib/kde4/kded_colord.so
#88 0x00007f5df93e32c3 in ?? () from /usr/lib/kde4/kded_colord.so
#89 0x00007f5df93e5469 in ?? () from /usr/lib/kde4/kded_colord.so
#90 0x00007f5e08a565be in QObject::event (this=0xf16a10, e=<optimized out>) at kernel/qobject.cpp:1194
#91 0x00007f5e096a18ec in QApplicationPrivate::notify_helper (this=this@entry=0xcc07a0, receiver=receiver@entry=0xf16a10, e=e@entry=0xf33c20) at kernel/qapplication.cpp:4567
#92 0x00007f5e096a425b in QApplication::notify (this=this@entry=0x7fff128f2be0, receiver=receiver@entry=0xf16a10, e=e@entry=0xf33c20) at kernel/qapplication.cpp:4428
#93 0x00007f5e0a3ad1a6 in KApplication::notify (this=0x7fff128f2be0, receiver=0xf16a10, event=0xf33c20) at ../../kdeui/kernel/kapplication.cpp:311
#94 0x00007f5e08a3c63e in QCoreApplication::notifyInternal (this=0x7fff128f2be0, receiver=receiver@entry=0xf16a10, event=event@entry=0xf33c20) at kernel/qcoreapplication.cpp:946
#95 0x00007f5e08a40171 in sendEvent (event=0xf33c20, receiver=0xf16a10) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#96 QCoreApplicationPrivate::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0, data=0xc8d150) at kernel/qcoreapplication.cpp:1570
#97 0x00007f5e08a404a3 in QCoreApplication::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0) at kernel/qcoreapplication.cpp:1463
#98 0x00007f5e08a6ae83 in sendPostedEvents () at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:236
#99 postEventSourceDispatch (s=0xcc0cf0) at kernel/qeventdispatcher_glib.cpp:279
#100 0x00007f5e06081f05 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#101 0x00007f5e06082248 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#102 0x00007f5e06082304 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#103 0x00007f5e08a6b016 in QEventDispatcherGlib::processEvents (this=0xcc0730, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#104 0x00007f5e097471ae in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#105 0x00007f5e08a3b38f in QEventLoop::processEvents (this=this@entry=0x7fff128f2960, flags=...) at kernel/qeventloop.cpp:149
#106 0x00007f5e08a3b618 in QEventLoop::exec (this=this@entry=0x7fff128f2960, flags=...) at kernel/qeventloop.cpp:204
#107 0x00007f5e08a40cf6 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1218
#108 0x00007f5e0969fffc in QApplication::exec () at kernel/qapplication.cpp:3828
#109 0x00007f5e0aed2050 in kdemain (argc=1, argv=0x7fff128f2d28) at ../../kded/kded.cpp:925
#110 0x00007f5e0ab22ea5 in __libc_start_main (main=0x4006d0 <main(int, char**)>, argc=1, ubp_av=0x7fff128f2d28, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fff128f2d18) at libc-start.c:260
#111 0x0000000000400701 in _start ()