Application: khelpcenter (5.2.2)

Qt Version: 5.4.1
Operating System: Linux 3.19.0-18-generic x86_64
Distribution: Ubuntu 15.04

-- Information about the crash:
- What I was doing when the application crashed:
setting my display
can not change display setting cause controls screen is way to big for screen and cant resize it down  to get to the OK  or setting  im on 1280x720   and cant even find 1024  for my other screen
also time dont stay set has reupdate after reboot


- Unusual behavior I noticed:
alot flickering   blocks  
every boot i have to use this just to see my screen properly

xrandr --output HDMI-0 --set underscan on --set "underscan hborder" 34 --set "underscan vborder" 20


havnt goto test video yet cause these problems  this fresh install fully updated

The crash can be reproduced sometimes.

-- Backtrace:
Application: KDE Help Center (khelpcenter), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f4119d4f800 (LWP 1830))]

Thread 2 (Thread 0x7f4104276700 (LWP 1831)):
#0  0x00007f41197c78dd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f410f6a2b72 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007f410f6a464f in xcb_wait_for_event () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007f410619a099 in QXcbEventReader::run (this=0x692ce0) at qxcbconnection.cpp:1105
#4  0x00007f4114ccab0e in QThreadPrivate::start (arg=0x692ce0) at thread/qthread_unix.cpp:337
#5  0x00007f410fac56aa in start_thread (arg=0x7f4104276700) at pthread_create.c:333
#6  0x00007f41197d2eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7f4119d4f800 (LWP 1830)):
[KCrash Handler]
#6  0x0000000000f04ba0 in ?? ()
#7  0x00007f4112f2c22e in qDeleteAll<QList<Phonon::MediaObject*>::const_iterator> (end=..., begin=...) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:315
#8  qDeleteAll<QList<Phonon::MediaObject*> > (c=...) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:323
#9  NotifyByAudio::~NotifyByAudio (this=0xcdcc60, __in_chrg=<optimized out>) at ../../src/notifybyaudio.cpp:46
#10 0x00007f4112f2c2c9 in NotifyByAudio::~NotifyByAudio (this=0xcdcc60, __in_chrg=<optimized out>) at ../../src/notifybyaudio.cpp:48
#11 0x00007f4114f3818c in QObjectPrivate::deleteChildren (this=this@entry=0xcdc870) at kernel/qobject.cpp:1950
#12 0x00007f4114f427f3 in QObject::~QObject (this=<optimized out>, __in_chrg=<optimized out>) at kernel/qobject.cpp:1030
#13 0x00007f4112f10519 in (anonymous namespace)::Q_QGS_s_self::innerFunction()::Holder::~Holder() () at ../../src/knotificationmanager.cpp:53
#14 0x00007f4119705d32 in __run_exit_handlers (status=1, listp=0x7f4119a90698 <__exit_funcs>, run_list_atexit=run_list_atexit@entry=true) at exit.c:82
#15 0x00007f4119705d85 in __GI_exit (status=<optimized out>) at exit.c:104
#16 0x00007f4114ce03fa in QCommandLineParser::process (this=this@entry=0x7ffe705bdb90, arguments=...) at tools/qcommandlineparser.cpp:511
#17 0x00007f4119ae1209 in KHC::Application::activate (this=0x7ffe705be7a0, args=..., workingDirectory=...) at ../application.cpp:50
#18 0x00007f4114f3935a in call (a=0x7ffe705bdd30, r=0x7ffe705be7a0, this=0x6f5100) at ../../include/QtCore/../../src/corelib/kernel/qobject_impl.h:124
#19 QMetaObject::activate (sender=sender@entry=0x6db630, signalOffset=<optimized out>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x7ffe705bdd30) at kernel/qobject.cpp:3702
#20 0x00007f4114f3a057 in QMetaObject::activate (sender=sender@entry=0x6db630, m=m@entry=0x7f411874ad00 <KDBusService::staticMetaObject>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x7ffe705bdd30) at kernel/qobject.cpp:3582
#21 0x00007f4118545727 in KDBusService::activateRequested (this=this@entry=0x6db630, _t1=..., _t2=...) at moc_kdbusservice.cpp:191
#22 0x00007f4118542186 in KDBusService::Activate (this=0x6db630, platform_data=...) at ../../src/kdbusservice.cpp:191
#23 0x00007f4118545513 in KDBusServiceAdaptor::qt_metacall (this=0x6db510, _c=QMetaObject::InvokeMetaMethod, _id=0, _a=0x7ffe705bdee0) at kdbusservice_adaptor.moc:137
#24 0x00007f4119e6e5c7 in QDBusConnectionPrivate::deliverCall (this=0xf048d0, object=0xffffffff, msg=..., metaTypes=..., slotIdx=0) at qdbusintegrator.cpp:993
#25 0x00007f4119e72efc in QDBusConnectionPrivate::activateCall (this=0xf048d0, this@entry=0x6d32c0, object=0x6db510, flags=273, msg=...) at qdbusintegrator.cpp:898
#26 0x00007f4119e739bb in QDBusConnectionPrivate::activateObject (this=0x6d32c0, node=..., msg=..., pathStartPos=<optimized out>) at qdbusintegrator.cpp:1460
#27 0x00007f4119e757fe in QDBusActivateObjectEvent::placeMetaCall (this=0xf19cf0) at qdbusintegrator.cpp:1582
#28 0x00007f4114f3a73a in QObject::event (this=0x6db630, e=<optimized out>) at kernel/qobject.cpp:1245
#29 0x00007f4115812b2c in QApplicationPrivate::notify_helper (this=0x678b30, receiver=0x6db630, e=0xf19cf0) at kernel/qapplication.cpp:3720
#30 0x00007f4115818000 in QApplication::notify (this=0x7ffe705be7a0, receiver=0x6db630, e=0xf19cf0) at kernel/qapplication.cpp:3503
#31 0x00007f4114f08c2b in QCoreApplication::notifyInternal (this=0x7ffe705be7a0, receiver=0x6db630, event=event@entry=0xf19cf0) at kernel/qcoreapplication.cpp:935
#32 0x00007f4114f0ac9b in sendEvent (event=0xf19cf0, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:228
#33 QCoreApplicationPrivate::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0, data=0x673e80) at kernel/qcoreapplication.cpp:1552
#34 0x00007f4114f0b298 in QCoreApplication::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0) at kernel/qcoreapplication.cpp:1410
#35 0x00007f4114f61843 in postEventSourceDispatch (s=0x6c38c0) at kernel/qeventdispatcher_glib.cpp:271
#36 0x00007f410ef7ec3d in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#37 0x00007f410ef7ef20 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#38 0x00007f410ef7efcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#39 0x00007f4114f61c57 in QEventDispatcherGlib::processEvents (this=0x6ba070, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#40 0x00007f4114f063e2 in QEventLoop::exec (this=this@entry=0x7ffe705be670, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#41 0x00007f4114f0e02c in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1188
#42 0x00007f411524d31c in QGuiApplication::exec () at kernel/qguiapplication.cpp:1510
#43 0x00007f411580e7a5 in QApplication::exec () at kernel/qapplication.cpp:2956
#44 0x00007f4119ae1bbe in kdemain (argc=1, argv=<optimized out>) at ../application.cpp:100
#45 0x00007f41196eca40 in __libc_start_main (main=0x400720 <main(int, char**)>, argc=1, argv=0x7ffe705be8e8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffe705be8d8) at libc-start.c:289
#46 0x0000000000400759 in _start ()

Reported using DrKonqi