Application: kded4 (4.13.2)
KDE Platform Version: 4.13.2
Qt Version: 4.8.6
Operating System: Linux 3.13.0-32-generic x86_64
Distribution: Ubuntu 14.04.1 LTS

-- Information about the crash:
- What I was doing when the application crashed:
After login from boot/reboot, the kde daemon crashes without obvious reason. It might also have happened after resuming from suspension, but I will have to check when it happens again.

If it could be of help, I am using the oibaf graphics drivers ppa.
Homerunviewer and krunner crash more or less often as well.

The crash can be reproduced sometimes.

-- Backtrace:
Application: KDE Dæmon (kded4), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f7190c177c0 (LWP 1994))]

Thread 7 (Thread 0x7f7174414700 (LWP 1996)):
#0  0x00007f718b5c562a in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f718b5c5989 in g_mutex_lock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f718b583a6c in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f718b583f7b in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f718b5840ec in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f718f8bf7be in QEventDispatcherGlib::processEvents (this=0x7f716c0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:436
#6  0x00007f718f8910af in QEventLoop::processEvents (this=this@entry=0x7f7174413e20, flags=...) at kernel/qeventloop.cpp:149
#7  0x00007f718f8913a5 in QEventLoop::exec (this=this@entry=0x7f7174413e20, flags=...) at kernel/qeventloop.cpp:204
#8  0x00007f718f78dc5f in QThread::exec (this=<optimized out>) at thread/qthread.cpp:537
#9  0x00007f718f79032f in QThreadPrivate::start (arg=0x1a8eb40) at thread/qthread_unix.cpp:349
#10 0x00007f718bc66182 in start_thread (arg=0x7f7174414700) at pthread_create.c:312
#11 0x00007f718e49330d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 6 (Thread 0x7f716b4fa700 (LWP 2003)):
#0  0x00007f718e4846bd in read () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f718b5c4c20 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f718b583b14 in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f718b583f7b in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f718b5840ec in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f718f8bf7be in QEventDispatcherGlib::processEvents (this=0x7f71640008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:436
#6  0x00007f718f8910af in QEventLoop::processEvents (this=this@entry=0x7f716b4f9de0, flags=...) at kernel/qeventloop.cpp:149
#7  0x00007f718f8913a5 in QEventLoop::exec (this=this@entry=0x7f716b4f9de0, flags=...) at kernel/qeventloop.cpp:204
#8  0x00007f718f78dc5f in QThread::exec (this=this@entry=0x1b010f0) at thread/qthread.cpp:537
#9  0x00007f718f872823 in QInotifyFileSystemWatcherEngine::run (this=0x1b010f0) at io/qfilesystemwatcher_inotify.cpp:265
#10 0x00007f718f79032f in QThreadPrivate::start (arg=0x1b010f0) at thread/qthread_unix.cpp:349
#11 0x00007f718bc66182 in start_thread (arg=0x7f716b4fa700) at pthread_create.c:312
#12 0x00007f718e49330d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 5 (Thread 0x7f715385b700 (LWP 2023)):
#0  0x00007f718e485fbd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f718b583fe4 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f718b58430a in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f7153d63e16 in ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#4  0x00007f718b5a8f15 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f718bc66182 in start_thread (arg=0x7f715385b700) at pthread_create.c:312
#6  0x00007f718e49330d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 4 (Thread 0x7f7152e4e700 (LWP 2025)):
#0  0x00007f718e4846bd in read () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f718b5c4c20 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f718b583b14 in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f718b583f7b in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f718b5840ec in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f718f8bf7be in QEventDispatcherGlib::processEvents (this=0x7f712c0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:436
#6  0x00007f718f8910af in QEventLoop::processEvents (this=this@entry=0x7f7152e4dde0, flags=...) at kernel/qeventloop.cpp:149
#7  0x00007f718f8913a5 in QEventLoop::exec (this=this@entry=0x7f7152e4dde0, flags=...) at kernel/qeventloop.cpp:204
#8  0x00007f718f78dc5f in QThread::exec (this=<optimized out>) at thread/qthread.cpp:537
#9  0x00007f7171a1b027 in KCupsConnection::run() () from /usr/lib/libkcupslib.so
#10 0x00007f718f79032f in QThreadPrivate::start (arg=0x1ad0890) at thread/qthread_unix.cpp:349
#11 0x00007f718bc66182 in start_thread (arg=0x7f7152e4e700) at pthread_create.c:312
#12 0x00007f718e49330d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 3 (Thread 0x7f715264d700 (LWP 2026)):
#0  0x00007f718e485fbd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f718b583fe4 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f718b5840ec in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f718f8bf7be in QEventDispatcherGlib::processEvents (this=0x7f71300008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:436
#4  0x00007f718f8910af in QEventLoop::processEvents (this=this@entry=0x7f715264ce20, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007f718f8913a5 in QEventLoop::exec (this=this@entry=0x7f715264ce20, flags=...) at kernel/qeventloop.cpp:204
#6  0x00007f718f78dc5f in QThread::exec (this=<optimized out>) at thread/qthread.cpp:537
#7  0x00007f718f79032f in QThreadPrivate::start (arg=0x19420c0) at thread/qthread_unix.cpp:349
#8  0x00007f718bc66182 in start_thread (arg=0x7f715264d700) at pthread_create.c:312
#9  0x00007f718e49330d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 2 (Thread 0x7f71515ce700 (LWP 2050)):
#0  0x00007f718bc697ee in __pthread_mutex_unlock_usercnt (decr=1, mutex=0x7f711c000a60) at pthread_mutex_unlock.c:57
#1  __GI___pthread_mutex_unlock (mutex=0x7f711c000a60) at pthread_mutex_unlock.c:310
#2  0x00007f718b5c59c1 in g_mutex_unlock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f718b583680 in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f718b583f03 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f718b5840ec in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007f718f8bf7be in QEventDispatcherGlib::processEvents (this=0x7f711c0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:436
#7  0x00007f718f8910af in QEventLoop::processEvents (this=this@entry=0x7f71515cdde0, flags=...) at kernel/qeventloop.cpp:149
#8  0x00007f718f8913a5 in QEventLoop::exec (this=this@entry=0x7f71515cdde0, flags=...) at kernel/qeventloop.cpp:204
#9  0x00007f718f78dc5f in QThread::exec (this=this@entry=0x201d6b0) at thread/qthread.cpp:537
#10 0x00007f718f872823 in QInotifyFileSystemWatcherEngine::run (this=0x201d6b0) at io/qfilesystemwatcher_inotify.cpp:265
#11 0x00007f718f79032f in QThreadPrivate::start (arg=0x201d6b0) at thread/qthread_unix.cpp:349
#12 0x00007f718bc66182 in start_thread (arg=0x7f71515ce700) at pthread_create.c:312
#13 0x00007f718e49330d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 1 (Thread 0x7f7190c177c0 (LWP 1994)):
[KCrash Handler]
#6  operator== (value=0, this=0xb0000000d) at /usr/include/qt4/QtCore/qbasicatomic.h:70
#7  data (this=0x1ebdaf0) at /usr/include/qt4/QtCore/qsharedpointer_impl.h:587
#8  Solid::Backends::UPower::Battery::slotChanged (this=0x1ebdae0) at ../../../solid/solid/backends/upower/upowerbattery.cpp:149
#9  0x00007f718f8a687a in QMetaObject::activate (sender=0x1e95f20, m=<optimized out>, local_signal_index=<optimized out>, argv=0x0) at kernel/qobject.cpp:3539
#10 0x00007f718f8a687a in QMetaObject::activate (sender=sender@entry=0x1e95f30, m=<optimized out>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x7fff08d7e950) at kernel/qobject.cpp:3539
#11 0x00007f718cc26a82 in QDBusInterfacePrivate::metacall (this=0x3e994d0, c=<optimized out>, id=0, argv=0x7fff08d7e950) at qdbusinterface.cpp:278
#12 0x00007f718cc141f6 in QDBusConnectionPrivate::deliverCall (this=0x17f8730, object=0x1e95f30, msg=..., metaTypes=..., slotIdx=5) at qdbusintegrator.cpp:951
#13 0x00007f718f8aac1e in QObject::event (this=0x1e95f30, e=<optimized out>) at kernel/qobject.cpp:1194
#14 0x00007f718ec2be2c in QApplicationPrivate::notify_helper (this=this@entry=0x17fe5a0, receiver=receiver@entry=0x1e95f30, e=e@entry=0x1f42740) at kernel/qapplication.cpp:4567
#15 0x00007f718ec324a0 in QApplication::notify (this=this@entry=0x7fff08d7f120, receiver=receiver@entry=0x1e95f30, e=e@entry=0x1f42740) at kernel/qapplication.cpp:4353
#16 0x00007f7190611d1a in KApplication::notify (this=0x7fff08d7f120, receiver=0x1e95f30, event=0x1f42740) at ../../kdeui/kernel/kapplication.cpp:311
#17 0x00007f718f8924dd in QCoreApplication::notifyInternal (this=0x7fff08d7f120, receiver=receiver@entry=0x1e95f30, event=event@entry=0x1f42740) at kernel/qcoreapplication.cpp:953
#18 0x00007f718f895b3d in sendEvent (event=0x1f42740, receiver=0x1e95f30) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#19 QCoreApplicationPrivate::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0, data=0x1750150) at kernel/qcoreapplication.cpp:1577
#20 0x00007f718f895fe3 in QCoreApplication::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0) at kernel/qcoreapplication.cpp:1470
#21 0x00007f718f8bff83 in sendPostedEvents () at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:236
#22 postEventSourceDispatch (s=0x17fcb70) at kernel/qeventdispatcher_glib.cpp:287
#23 0x00007f718b583e04 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#24 0x00007f718b584048 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#25 0x00007f718b5840ec in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#26 0x00007f718f8bf7a1 in QEventDispatcherGlib::processEvents (this=0x17526d0, flags=...) at kernel/qeventdispatcher_glib.cpp:434
#27 0x00007f718eccdbb6 in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#28 0x00007f718f8910af in QEventLoop::processEvents (this=this@entry=0x7fff08d7eff0, flags=...) at kernel/qeventloop.cpp:149
#29 0x00007f718f8913a5 in QEventLoop::exec (this=this@entry=0x7fff08d7eff0, flags=...) at kernel/qeventloop.cpp:204
#30 0x00007f718f896b79 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1225
#31 0x00007f718ec2a37c in QApplication::exec () at kernel/qapplication.cpp:3828
#32 0x00007f7179e02d1b in kdemain (argc=1, argv=0x17d6820) at ../../kded/kded.cpp:940
#33 0x00000000004083ee in launch (argc=argc@entry=1, _name=_name@entry=0x40afc7 "kded4", args=args@entry=0x0, cwd=cwd@entry=0x0, envc=envc@entry=0, envs=<optimized out>, envs@entry=0x0, reset_env=reset_env@entry=false, tty=tty@entry=0x0, avoid_loops=avoid_loops@entry=false, startup_id_str=startup_id_str@entry=0x40ae56 "0") at ../../kinit/kinit.cpp:738
#34 0x00000000004059a3 in main (argc=4, argv=<optimized out>, envp=0x7fff08d7f880) at ../../kinit/kinit.cpp:1853

Reported using DrKonqi