Application: knotify4 (4.0)
KDE Platform Version: 4.4.5 (KDE 4.4.5)
Qt Version: 4.6.3
Operating System: Linux 2.6.32-25-generic x86_64
Distribution: Ubuntu 10.04.1 LTS

-- Information about the crash:
when i switch in systemsettings under audio from xine to gstreamer knotify crash.

The crash can be reproduced every time.

 -- Backtrace:
Application: KNotify (knotify4), signal: Segmentation fault
[Current thread is 1 (Thread 0x7f69ce4da760 (LWP 3196))]

Thread 2 (Thread 0x7f69bb97a710 (LWP 3201)):
#0  0x00007f69cbc78f93 in *__GI___poll (fds=<value optimized out>, nfds=<value optimized out>, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007f69c0cc541f in ?? () from /usr/lib/libpulse.so.0
#2  0x00007f69c0cb4d86 in pa_mainloop_poll () from /usr/lib/libpulse.so.0
#3  0x00007f69c0cb6809 in pa_mainloop_iterate () from /usr/lib/libpulse.so.0
#4  0x00007f69c0cb68c0 in pa_mainloop_run () from /usr/lib/libpulse.so.0
#5  0x00007f69c0cc521b in ?? () from /usr/lib/libpulse.so.0
#6  0x00007f69c0a840e8 in ?? () from /usr/lib/libpulsecommon-0.9.21.so
#7  0x00007f69ca3489ca in start_thread (arg=<value optimized out>) at pthread_create.c:300
#8  0x00007f69cbc8570d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#9  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f69ce4da760 (LWP 3196)):
[KCrash Handler]
#5  0x00007f69c33e9e49 in ?? () from /usr/lib/libasound.so.2
#6  0x00007f69c33acb15 in snd_pcm_close () from /usr/lib/libasound.so.2
#7  0x00007f69c10e76ff in ?? () from /usr/lib/gstreamer-0.10/libgstalsa.so
#8  0x00007f69c1e543c6 in ?? () from /usr/lib/libgstaudio-0.10.so.0
#9  0x00007f69c1e47ecb in gst_ring_buffer_close_device () from /usr/lib/libgstaudio-0.10.so.0
#10 0x00007f69c1e4fca6 in ?? () from /usr/lib/libgstaudio-0.10.so.0
#11 0x00007f69c26f318c in gst_element_change_state (element=0xc6b9b0, transition=0) at gstelement.c:2548
#12 0x00007f69c26f61bb in gst_element_set_state_func (element=0xc89600, state=GST_STATE_NULL) at gstelement.c:2504
#13 0x00007f69c2e819aa in Phonon::Gstreamer::AudioOutput::setOutputDevice (this=0x9ea010, newDevice=<value optimized out>) at ../../gstreamer/audiooutput.cpp:217
#14 0x00007f69cda8c010 in callSetOutputDevice (this=0x904290) at ../3rdparty/phonon/phonon/audiooutput.cpp:67
#15 Phonon::AudioOutputPrivate::setupBackendObject (this=0x904290) at ../3rdparty/phonon/phonon/audiooutput.cpp:281
#16 0x00007f69cda8c6f0 in Phonon::AudioOutputPrivate::createBackendObject (this=0x904290) at ../3rdparty/phonon/phonon/audiooutput.cpp:124
#17 0x00007f69cda88eea in Phonon::AudioOutputPrivate::init (this=0x904290, c=<value optimized out>) at ../3rdparty/phonon/phonon/audiooutput.cpp:106
#18 0x00007f69cda8959d in AudioOutput (this=0x97b9a0, category=Phonon::NotificationCategory, parent=0x0) at ../3rdparty/phonon/phonon/audiooutput.cpp:76
#19 0x000000000040d101 in Player (this=0x98e438) at ../../knotify/notifybysound.cpp:59
#20 PlayerPool::getPlayer (this=0x98e438) at ../../knotify/notifybysound.cpp:99
#21 0x000000000040d63e in NotifyBySound::notify (this=0x98e6a0, eventId=2, config=0x7fffd97059c0) at ../../knotify/notifybysound.cpp:243
#22 0x0000000000408d63 in KNotify::emitEvent (this=0x7fffd9706cc0, e=0x8f9c80) at ../../knotify/knotify.cpp:179
#23 0x0000000000409022 in KNotify::event (this=0x7fffd9706cc0, event=<value optimized out>, appname=<value optimized out>, contexts=<value optimized out>, title=<value optimized out>, 
    text=<value optimized out>, image=..., actions=..., timeout=-1, winId=0) at ../../knotify/knotify.cpp:128
#24 0x000000000040935f in KNotifyAdaptor::event (this=0x98bf50, event=..., fromApp=..., contexts=<value optimized out>, title=..., text=<value optimized out>, image=..., actions=..., timeout=-1, 
    winId=0) at ../../knotify/knotify.cpp:236
#25 0x000000000040a03b in KNotifyAdaptor::qt_metacall (this=0x98bf50, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fffd9705f50) at ./knotify.moc:227
#26 0x00007f69cd3755a6 in QDBusConnectionPrivate::deliverCall (this=<value optimized out>, object=<value optimized out>, msg=<value optimized out>, metaTypes=..., slotIdx=<value optimized out>)
    at qdbusintegrator.cpp:904
#27 0x00007f69cd37686b in QDBusConnectionPrivate::activateCall (this=<value optimized out>, object=0x98bf50, flags=273, msg=...) at qdbusintegrator.cpp:816
#28 0x00007f69cd3772ed in QDBusConnectionPrivate::activateObject (this=<value optimized out>, node=<value optimized out>, msg=..., pathStartPos=<value optimized out>) at qdbusintegrator.cpp:1364
#29 0x00007f69cd377588 in QDBusActivateObjectEvent::placeMetaCall (this=0x962fd0) at qdbusintegrator.cpp:1477
#30 0x00007f69cd04ab79 in QObject::event (this=0x7fffd9706cc0, e=0x962fd0) at kernel/qobject.cpp:1248
#31 0x00007f69cc3f4c0c in QApplicationPrivate::notify_helper (this=0x903990, receiver=0x7fffd9706cc0, e=0x962fd0) at kernel/qapplication.cpp:4302
#32 0x00007f69cc3fb0eb in QApplication::notify (this=0x7fffd9706cf0, receiver=0x7fffd9706cc0, e=0x962fd0) at kernel/qapplication.cpp:4185
#33 0x00007f69cdef6a16 in KApplication::notify (this=0x7fffd9706cf0, receiver=0x7fffd9706cc0, event=0x962fd0) at ../../kdeui/kernel/kapplication.cpp:302
#34 0x00007f69cd03ad9c in QCoreApplication::notifyInternal (this=0x7fffd9706cf0, receiver=0x7fffd9706cc0, event=0x962fd0) at kernel/qcoreapplication.cpp:726
#35 0x00007f69cd03e454 in QCoreApplication::sendEvent (receiver=0x0, event_type=<value optimized out>, data=0x8dac20) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#36 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=<value optimized out>, data=0x8dac20) at kernel/qcoreapplication.cpp:1367
#37 0x00007f69cd064873 in QCoreApplication::sendPostedEvents (s=<value optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:220
#38 postEventSourceDispatch (s=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:276
#39 0x00007f69c8c7e8c2 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#40 0x00007f69c8c82748 in ?? () from /lib/libglib-2.0.so.0
#41 0x00007f69c8c828fc in g_main_context_iteration () from /lib/libglib-2.0.so.0
#42 0x00007f69cd0643b3 in QEventDispatcherGlib::processEvents (this=0x8da760, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:412
#43 0x00007f69cc4a518e in QGuiEventDispatcherGlib::processEvents (this=0xc6b9b0, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:204
#44 0x00007f69cd0396c2 in QEventLoop::processEvents (this=<value optimized out>, flags=) at kernel/qeventloop.cpp:149
#45 0x00007f69cd039a9c in QEventLoop::exec (this=0x7fffd9706c10, flags=) at kernel/qeventloop.cpp:201
#46 0x00007f69cd03e73b in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1003
#47 0x0000000000407f4f in main (argc=<value optimized out>, argv=<value optimized out>) at ../../knotify/main.cpp:73

Possible duplicates by query: bug 255462, bug 255320, bug 253416, bug 250853, bug 250142.

Reported using DrKonqi