Bug 299125

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:

I'm using a Lenovo ThinkPad X220 w/ Minidock 3 Plus Dockingstation

Upon undocking KMix crashes.

Primary audio output is via USB-Soundcard that is connected to the docking station.

Reproducible: 
Always

The crash can be reproduced every 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 0xb1b12740 (LWP 15815))]

Thread 3 (Thread 0xaa15ab40 (LWP 15816)):
#0  0xb7723424 in __kernel_vsyscall ()
#1  0xb75b317b in read () from /lib/i386-linux-gnu/libc.so.6
#2  0xb2dbe66e in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#3  0xb2d7faf0 in g_main_context_check () from /lib/i386-linux-gnu/libglib-2.0.so.0
#4  0xb2d80002 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#5  0xb2d801c1 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#6  0xb5b7f8e7 in QEventDispatcherGlib::processEvents (this=0xa9800468, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#7  0xb5b4b50d in QEventLoop::processEvents (this=0xaa15a240, flags=...) at kernel/qeventloop.cpp:149
#8  0xb5b4b7a9 in QEventLoop::exec (this=0xaa15a240, flags=...) at kernel/qeventloop.cpp:204
#9  0xb5a3494c in QThread::exec (this=0x96274d0) at thread/qthread.cpp:501
#10 0xb5b28b5d in QInotifyFileSystemWatcherEngine::run (this=0x96274d0) at io/qfilesystemwatcher_inotify.cpp:248
#11 0xb5a37de0 in QThreadPrivate::start (arg=0x96274d0) at thread/qthread_unix.cpp:298
#12 0xb2ef8d4c in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#13 0xb75c3ace in clone () from /lib/i386-linux-gnu/libc.so.6

Thread 2 (Thread 0xa57feb40 (LWP 15817)):
#0  0xb2eecdcd in clock_gettime () from /lib/i386-linux-gnu/librt.so.1
#1  0xb5a96315 in do_gettime (frac=0xa57fdfb0, sec=0xa57fdfa8) at tools/qelapsedtimer_unix.cpp:123
#2  qt_gettime () at tools/qelapsedtimer_unix.cpp:140
#3  0xb5b80226 in QTimerInfoList::updateCurrentTime (this=0xa4e02074) at kernel/qeventdispatcher_unix.cpp:343
#4  0xb5b8057a in QTimerInfoList::timerWait (this=0xa4e02074, tm=...) at kernel/qeventdispatcher_unix.cpp:450
#5  0xb5b7ee23 in timerSourcePrepareHelper (src=<optimized out>, timeout=0xa57fe0bc) at kernel/qeventdispatcher_glib.cpp:136
#6  0xb5b7eebd in timerSourcePrepare (source=0xa4e02040, timeout=<optimized out>) at kernel/qeventdispatcher_glib.cpp:169
#7  0xb2d7f762 in g_main_context_prepare () from /lib/i386-linux-gnu/libglib-2.0.so.0
#8  0xb2d7ff6f in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#9  0xb2d801c1 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#10 0xb5b7f8e7 in QEventDispatcherGlib::processEvents (this=0xa4e00468, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#11 0xb5b4b50d in QEventLoop::processEvents (this=0xa57fe240, flags=...) at kernel/qeventloop.cpp:149
#12 0xb5b4b7a9 in QEventLoop::exec (this=0xa57fe240, flags=...) at kernel/qeventloop.cpp:204
#13 0xb5a3494c in QThread::exec (this=0x96dfa70) at thread/qthread.cpp:501
#14 0xb5b28b5d in QInotifyFileSystemWatcherEngine::run (this=0x96dfa70) at io/qfilesystemwatcher_inotify.cpp:248
#15 0xb5a37de0 in QThreadPrivate::start (arg=0x96dfa70) at thread/qthread_unix.cpp:298
#16 0xb2ef8d4c in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#17 0xb75c3ace in clone () from /lib/i386-linux-gnu/libc.so.6

Thread 1 (Thread 0xb1b12740 (LWP 15815)):
[KCrash Handler]
#7  0x00000000 in ?? ()
#8  0xb76e3f78 in MDWSlider::update (this=0x96c5a50) at ../../kmix/gui/mdwslider.cpp:1001
#9  0xb76dec23 in ViewDockAreaPopup::refreshVolumeLevels (this=0x96c5220) at ../../kmix/gui/viewdockareapopup.cpp:168
#10 0xb76db913 in qt_static_metacall (_a=0xbff718c0, _id=3, _o=0x96c5220, _c=<optimized out>) at ./viewbase.moc:64
#11 ViewBase::qt_static_metacall (_o=0x96c5220, _c=QMetaObject::InvokeMetaMethod, _id=3, _a=0xbff718c0) at ./viewbase.moc:55
#12 0xb5b636b1 in QMetaObject::activate (sender=0x93bd198, m=0xb771fd48, local_signal_index=1, argv=0x0) at kernel/qobject.cpp:3547
#13 0xb76fec75 in Mixer::controlChanged (this=0x93bd198) at ./mixer.moc:117
#14 0xb5b636b1 in QMetaObject::activate (sender=0x93bd240, m=0xb771dc44, local_signal_index=0, argv=0x0) at kernel/qobject.cpp:3547
#15 0xb76b3ea5 in Mixer_Backend::controlChanged (this=0x93bd240) at ./mixer_backend.moc:107
#16 0xb76b41a8 in Mixer_Backend::readSetFromHW (this=0x93bd240) at ../../kmix/backends/mixer_backend.cpp:155
#17 0xb76c112a in Mixer_PULSE::triggerUpdate (this=0x93bd240) at ../../kmix/backends/mixer_pulse.cpp:1286
#18 0xb76c547d in sink_cb (c=0x9682320, i=0x0, eol=1) at ../../kmix/backends/mixer_pulse.cpp:191
#19 0xb6aecb45 in ?? () from /usr/lib/i386-linux-gnu/libpulse.so.0
#20 0xb2eabeed in ?? () from /usr/lib/i386-linux-gnu/libpulsecommon-1.1.so
#21 0xb2eac2f0 in pa_pdispatch_run () from /usr/lib/i386-linux-gnu/libpulsecommon-1.1.so
#22 0xb6ae0a1d in ?? () from /usr/lib/i386-linux-gnu/libpulse.so.0
#23 0xb2eb18c3 in ?? () from /usr/lib/i386-linux-gnu/libpulsecommon-1.1.so
#24 0xb2e9bc28 in ?? () from /usr/lib/i386-linux-gnu/libpulsecommon-1.1.so
#25 0xb6acfa3a in ?? () from /usr/lib/i386-linux-gnu/libpulse-mainloop-glib.so.0
#26 0xb2d7fcda in g_main_context_dispatch () from /lib/i386-linux-gnu/libglib-2.0.so.0
#27 0xb2d800e5 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#28 0xb2d801c1 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#29 0xb5b7f887 in QEventDispatcherGlib::processEvents (this=0x93a0ea0, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#30 0xb61eeaaa in QGuiEventDispatcherGlib::processEvents (this=0x93a0ea0, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#31 0xb5b4b50d in QEventLoop::processEvents (this=0xbff723f4, flags=...) at kernel/qeventloop.cpp:149
#32 0xb5b4b7a9 in QEventLoop::exec (this=0xbff723f4, flags=...) at kernel/qeventloop.cpp:204
#33 0xb5b50eba in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1148
#34 0xb6133a74 in QApplication::exec () at kernel/qapplication.cpp:3820
#35 0xb76cd79b in kdemain (argc=5, argv=0xbff72654) at ../../kmix/apps/main.cpp:76
#36 0x0804850b in main (argc=5, argv=0xbff72654) at kmix_dummy.cpp:3

Possible duplicates by query: bug 299098, bug 299032, bug 298964, bug 298885, bug 298578.

Reported using DrKonqi