Application: kmix (4)
KDE Platform Version: 4.8.2 (4.8.2)
Qt Version: 4.8.1
Operating System: Linux 3.2.0-24-generic-pae i686
Distribution: Ubuntu 12.04 LTS

-- Information about the crash:
- What I was doing when the application crashed:

after upgrading kubuntu to 12.04 kmix started to crash from time to time.
I was never touching it at the time (didn't change the volume)
but it always happend while i was watching some video clip, in youtube or penny arcade.
I could not reproduce by choice, but it keep happening from time to time.

The crash can be reproduced some of the time.

-- Backtrace:
Application: KMix (kmix), signal: Segmentation fault
Using host libthread_db library "/lib/i386-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0xaff43980 (LWP 10087))]

Thread 3 (Thread 0xa87f3b40 (LWP 10088)):
#0  __pthread_mutex_lock (mutex=0xa7e00568) at pthread_mutex_lock.c:47
#1  0xb766b5f4 in pthread_mutex_lock (mutex=0xa7e00568) at forward.c:182
#2  0xb2e59390 in g_mutex_lock () from /lib/i386-linux-gnu/libglib-2.0.so.0
#3  0xb2e19868 in g_main_context_query () from /lib/i386-linux-gnu/libglib-2.0.so.0
#4  0xb2e19fce in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#5  0xb2e1a1c1 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#6  0xb5c198e7 in QEventDispatcherGlib::processEvents (this=0xa7e00480, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#7  0xb5be550d in QEventLoop::processEvents (this=0xa87f3190, flags=...) at kernel/qeventloop.cpp:149
#8  0xb5be57a9 in QEventLoop::exec (this=0xa87f3190, flags=...) at kernel/qeventloop.cpp:204
#9  0xb5ace94c in QThread::exec (this=0x9950ec0) at thread/qthread.cpp:501
#10 0xb5bc2b5d in QInotifyFileSystemWatcherEngine::run (this=0x9950ec0) at io/qfilesystemwatcher_inotify.cpp:248
#11 0xb5ad1de0 in QThreadPrivate::start (arg=0x9950ec0) at thread/qthread_unix.cpp:298
#12 0xb2376a11 in ?? () from /usr/lib/nvidia-current/libGL.so.1
#13 0x5c8b0824 in ?? ()
#14 0xbab80424 in ?? ()
#15 0x65000000 in ?? ()
#16 0x001015ff in ?? ()
#17 0xd3890000 in ?? ()
#18 0xfff0013d in ?? ()
#19 0xc30173ff in ?? ()
#20 0x0f8122e8 in ?? ()
#21 0x9fc18100 in ?? ()
#22 0x8b001724 in ?? ()
#23 0xffff0889 in ?? ()
#24 0x29d231ff in ?? ()
#25 0x0d0365c2 in ?? ()
#26 0x00000000 in ?? ()

Thread 2 (Thread 0xa3dfeb40 (LWP 10089)):
#0  0xb2f86dcd in __GI_clock_gettime (clock_id=1, tp=0xa3dfdf08) at ../sysdeps/unix/clock_gettime.c:116
#1  0xb5b30315 in do_gettime (frac=0xa3dfdf00, sec=0xa3dfdef8) at tools/qelapsedtimer_unix.cpp:123
#2  qt_gettime () at tools/qelapsedtimer_unix.cpp:140
#3  0xb5c1a226 in QTimerInfoList::updateCurrentTime (this=0xa340207c) at kernel/qeventdispatcher_unix.cpp:343
#4  0xb5c1a57a in QTimerInfoList::timerWait (this=0xa340207c, tm=...) at kernel/qeventdispatcher_unix.cpp:450
#5  0xb5c18e23 in timerSourcePrepareHelper (src=<optimized out>, timeout=0xa3dfe00c) at kernel/qeventdispatcher_glib.cpp:136
#6  0xb5c18ebd in timerSourcePrepare (source=0xa3402048, timeout=<optimized out>) at kernel/qeventdispatcher_glib.cpp:169
#7  0xb2e19762 in g_main_context_prepare () from /lib/i386-linux-gnu/libglib-2.0.so.0
#8  0xb2e19f6f in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#9  0xb2e1a1c1 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#10 0xb5c198e7 in QEventDispatcherGlib::processEvents (this=0xa3400480, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#11 0xb5be550d in QEventLoop::processEvents (this=0xa3dfe190, flags=...) at kernel/qeventloop.cpp:149
#12 0xb5be57a9 in QEventLoop::exec (this=0xa3dfe190, flags=...) at kernel/qeventloop.cpp:204
#13 0xb5ace94c in QThread::exec (this=0x99cad78) at thread/qthread.cpp:501
#14 0xb5bc2b5d in QInotifyFileSystemWatcherEngine::run (this=0x99cad78) at io/qfilesystemwatcher_inotify.cpp:248
#15 0xb5ad1de0 in QThreadPrivate::start (arg=0x99cad78) at thread/qthread_unix.cpp:298
#16 0xb2376a11 in ?? () from /usr/lib/nvidia-current/libGL.so.1
#17 0x5c8b0824 in ?? ()
#18 0xbab80424 in ?? ()
#19 0x65000000 in ?? ()
#20 0x001015ff in ?? ()
#21 0xd3890000 in ?? ()
#22 0xfff0013d in ?? ()
#23 0xc30173ff in ?? ()
#24 0x0f8122e8 in ?? ()
#25 0x9fc18100 in ?? ()
#26 0x8b001724 in ?? ()
#27 0xffff0889 in ?? ()
#28 0x29d231ff in ?? ()
#29 0x0d0365c2 in ?? ()
#30 0x00000000 in ?? ()

Thread 1 (Thread 0xaff43980 (LWP 10087)):
[KCrash Handler]
#7  0x00000000 in ?? ()
#8  0xb7787f78 in MDWSlider::update (this=0x99b2c98) at ../../kmix/gui/mdwslider.cpp:1001
#9  0xb7782c23 in ViewDockAreaPopup::refreshVolumeLevels (this=0x99b2548) at ../../kmix/gui/viewdockareapopup.cpp:168
#10 0xb777f913 in qt_static_metacall (_a=0xbf8d1710, _id=3, _o=0x99b2548, _c=<optimized out>) at ./viewbase.moc:64
#11 ViewBase::qt_static_metacall (_o=0x99b2548, _c=QMetaObject::InvokeMetaMethod, _id=3, _a=0xbf8d1710) at ./viewbase.moc:55
#12 0xb5bfd6b1 in QMetaObject::activate (sender=0x9943bf8, m=0xb77c3d48, local_signal_index=1, argv=0x0) at kernel/qobject.cpp:3547
#13 0xb77a2c75 in Mixer::controlChanged (this=0x9943bf8) at ./mixer.moc:117
#14 0xb5bfd6b1 in QMetaObject::activate (sender=0x993d9d8, m=0xb77c1c44, local_signal_index=0, argv=0x0) at kernel/qobject.cpp:3547
#15 0xb7757ea5 in Mixer_Backend::controlChanged (this=0x993d9d8) at ./mixer_backend.moc:107
#16 0xb77581a8 in Mixer_Backend::readSetFromHW (this=0x993d9d8) at ../../kmix/backends/mixer_backend.cpp:155
#17 0xb776512a in Mixer_PULSE::triggerUpdate (this=0x993d9d8) at ../../kmix/backends/mixer_pulse.cpp:1286
#18 0xb776947d in sink_cb (c=0x9a61b20, i=0x0, eol=1) at ../../kmix/backends/mixer_pulse.cpp:191
#19 0xb6b86b45 in ?? () from /usr/lib/i386-linux-gnu/libpulse.so.0
#20 0xb2f45eed in ?? () from /usr/lib/i386-linux-gnu/libpulsecommon-1.1.so
#21 0xb2f462f0 in pa_pdispatch_run () from /usr/lib/i386-linux-gnu/libpulsecommon-1.1.so
#22 0xb6b7aa1d in ?? () from /usr/lib/i386-linux-gnu/libpulse.so.0
#23 0xb2f4b8c3 in ?? () from /usr/lib/i386-linux-gnu/libpulsecommon-1.1.so
#24 0xb2f35c28 in ?? () from /usr/lib/i386-linux-gnu/libpulsecommon-1.1.so
#25 0xb6b69a3a in ?? () from /usr/lib/i386-linux-gnu/libpulse-mainloop-glib.so.0
#26 0xb2e19cda in g_main_context_dispatch () from /lib/i386-linux-gnu/libglib-2.0.so.0
#27 0xb2e1a0e5 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#28 0xb2e1a1c1 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#29 0xb5c19887 in QEventDispatcherGlib::processEvents (this=0x961bea0, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#30 0xb6288aaa in QGuiEventDispatcherGlib::processEvents (this=0x961bea0, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#31 0xb5be550d in QEventLoop::processEvents (this=0xbf8d2244, flags=...) at kernel/qeventloop.cpp:149
#32 0xb5be57a9 in QEventLoop::exec (this=0xbf8d2244, flags=...) at kernel/qeventloop.cpp:204
#33 0xb5beaeba in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1148
#34 0xb61cda74 in QApplication::exec () at kernel/qapplication.cpp:3820
#35 0xb777179b in kdemain (argc=1, argv=0xbf8d24a4) at ../../kmix/apps/main.cpp:76
#36 0x0804850b in main (argc=1, argv=0xbf8d24a4) at kmix_dummy.cpp:3

This bug may be a duplicate of or related to bug 290742.

Possible duplicates by query: bug 298885, bug 298578, bug 298528, bug 298492, bug 298269.

Reported using DrKonqi