Bug 288441 - Pulseaudio backend: crash when closing a player that was active before KMix was started
Summary: Pulseaudio backend: crash when closing a player that was active before KMix w...
Status: RESOLVED DUPLICATE of bug 290742
Alias: None
Product: kmix
Classification: Applications
Component: general (show other bugs)
Version: unspecified
Platform: openSUSE Linux
: NOR crash
Target Milestone: ---
Assignee: Christian Esken
URL:
Keywords:
: 295530 295642 295801 295835 295867 295907 295969 296010 296079 296102 296110 296158 296184 296194 296231 296235 296269 296322 296341 296345 296352 296355 296356 296361 296392 296408 296419 296449 296454 296466 296479 296517 296557 296568 296570 296592 296601 296628 296639 296646 296684 296717 296730 296754 296809 296815 296842 296843 296863 296880 296886 296919 296989 296998 297013 297087 297096 297103 297125 297155 297276 297431 (view as bug list)
Depends on:
Blocks:
 
Reported: 2011-12-07 20:32 UTC by Stefan Majewsky
Modified: 2012-04-09 01:42 UTC (History)
68 users (show)

See Also:
Latest Commit:
Version Fixed In:
Sentry Crash Report:

Attachments
Crude attempt at finding the cause (1.92 KB, patch)
2011-12-11 03:18 UTC, Lasse Liehu 		Details
New try (the first one wasn't correct) (2.00 KB, patch)
2011-12-11 03:24 UTC, Lasse Liehu 		Details
New crash information added by DrKonqi (4.78 KB, text/plain)
2012-03-15 08:00 UTC, Karl Ove Hufthammer 		Details
New crash information added by DrKonqi (6.89 KB, text/plain)
2012-03-16 15:27 UTC, Szymon 		Details
New crash information added by DrKonqi (6.79 KB, text/plain)
2012-03-16 17:18 UTC, gv 		Details
New crash information added by DrKonqi (4.10 KB, text/plain)
2012-04-09 01:42 UTC, Darkface 		Details
Show Obsolete (1) View All Add an attachment

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Description Stefan Majewsky 2011-12-07 20:32:38 UTC 
Application: kmix (3.9-plus)
KDE Platform Version: 4.7.3 (4.7.3) "release 3"
Qt Version: 4.8.0
Operating System: Linux 3.1.0-1.2-desktop i686
Distribution: "openSUSE 12.1 (i586)"

-- Information about the crash:
Steps to reproduce:
1. kquitapp kmix
2. Start MPlayer video playback.
3. Start KMix.
4. Close MPlayer via "q" key.

The bug does not occur if KMix is running before MPlayer is started (i.e. steps 2 and 3 above are swapped). I only noticed the problem because KMix did not react to its global shortcuts, therefore I restarted it while watching a video.

I'm on openSUSE 12.1. KMix uses the PulseAudio backend. DrKonqi says above that this is KDE 4.7.3, but it's actually 4.7.80 (4.8 Beta 1).

The crash can be reproduced every time.

-- Backtrace:
Application: KMix (kmix), signal: Segmentation fault
[Current thread is 1 (Thread 0xb1e62710 (LWP 6000))]

Thread 2 (Thread 0xa7c20b70 (LWP 6001)):
#0  0xb2fd444c in g_main_context_prepare () from /usr/lib/libglib-2.0.so.0
#1  0xb2fd5207 in ?? () from /usr/lib/libglib-2.0.so.0
#2  0xb2fd57fa in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#3  0xb676faf7 in QEventDispatcherGlib::processEvents (this=0x841acc8, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#4  0xb673b96d in QEventLoop::processEvents (this=0xa7c202a0, flags=...) at kernel/qeventloop.cpp:149
#5  0xb673bc09 in QEventLoop::exec (this=0xa7c202a0, flags=...) at kernel/qeventloop.cpp:204
#6  0xb6626cbc in QThread::exec (this=0x83f6708) at thread/qthread.cpp:501
#7  0xb6718fcd in QInotifyFileSystemWatcherEngine::run (this=0x83f6708) at io/qfilesystemwatcher_inotify.cpp:248
#8  0xb662a1a0 in QThreadPrivate::start (arg=0x83f6708) at thread/qthread_unix.cpp:298
#9  0xb65a7a7d in start_thread () from /lib/libpthread.so.0
#10 0xb76fc8fe in clone () from /lib/libc.so.6

Thread 1 (Thread 0xb1e62710 (LWP 6000)):
[KCrash Handler]
#6  0xb5ab6888 in vtable for __cxxabiv1::__si_class_type_info () from /usr/lib/libstdc++.so.6
#7  0xb77e3948 in MDWSlider::update (this=0x83d8410) at /usr/src/debug/kdemultimedia-4.7.80/kmix/gui/mdwslider.cpp:990
#8  0xb77de623 in ViewDockAreaPopup::refreshVolumeLevels (this=0x83b34a0) at /usr/src/debug/kdemultimedia-4.7.80/kmix/gui/viewdockareapopup.cpp:159
#9  0xb77db04b in qt_static_metacall (_a=0xbfbc7960, _id=4, _o=0x83b34a0, _c=<optimized out>) at /usr/src/debug/kdemultimedia-4.7.80/build/kmix/viewbase.moc:67
#10 ViewBase::qt_static_metacall (_o=0x83b34a0, _c=QMetaObject::InvokeMetaMethod, _id=4, _a=0xbfbc7960) at /usr/src/debug/kdemultimedia-4.7.80/build/kmix/viewbase.moc:57
#11 0xb675364f in QMetaObject::activate (sender=0x825eea0, m=0xb781dd48, local_signal_index=1, argv=0x0) at kernel/qobject.cpp:3555
#12 0xb77fdf05 in Mixer::controlChanged (this=0x825eea0) at /usr/src/debug/kdemultimedia-4.7.80/build/kmix/mixer.moc:117
#13 0xb675364f in QMetaObject::activate (sender=0x82a3c48, m=0xb781bc44, local_signal_index=0, argv=0x0) at kernel/qobject.cpp:3555
#14 0xb77b3fb5 in Mixer_Backend::controlChanged (this=0x82a3c48) at /usr/src/debug/kdemultimedia-4.7.80/build/kmix/mixer_backend.moc:107
#15 0xb77b42b8 in Mixer_Backend::readSetFromHW (this=0x82a3c48) at /usr/src/debug/kdemultimedia-4.7.80/kmix/backends/mixer_backend.cpp:155
#16 0xb77c01aa in Mixer_PULSE::triggerUpdate (this=0x82a3c48) at /usr/src/debug/kdemultimedia-4.7.80/kmix/backends/mixer_pulse.cpp:1286
#17 0xb77c4505 in sink_cb (c=0x82648e0, i=0x0, eol=1) at /usr/src/debug/kdemultimedia-4.7.80/kmix/backends/mixer_pulse.cpp:191
#18 0xb6c141f9 in context_get_sink_info_callback (pd=0x8253e08, command=2, tag=10, t=0x81cd330, userdata=0x83d9bb8) at pulse/introspect.c:272
#19 0xb31073fd in run_action (pd=0x8253e08, r=0x83da6d0, command=2, ts=0x81cd330) at pulsecore/pdispatch.c:279
#20 0xb3107800 in pa_pdispatch_run (pd=0x8253e08, packet=0x84241b8, creds=0x8402cc8, userdata=0x82648e0) at pulsecore/pdispatch.c:331
#21 0xb6c0855d in pstream_packet_callback (p=0x8402c00, packet=0x84241b8, creds=0x8402cc8, userdata=0x82648e0) at pulse/context.c:335
#22 0xb310ce0c in do_read (p=0x8402c00) at pulsecore/pstream.c:809
#23 do_something (p=0x8402c00) at pulsecore/pstream.c:177
#24 0xb30f7188 in callback (m=0x82ac97c, e=0x81cd1b0, fd=10, f=PA_IO_EVENT_INPUT, userdata=0x828d390) at pulsecore/iochannel.c:160
#25 0xb6bf4b2a in dispatch_func (source=0x82ac948, callback=0, userdata=0x0) at pulse/glib-mainloop.c:584
#26 0xb2fd4e2f in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#27 0xb2fd5560 in ?? () from /usr/lib/libglib-2.0.so.0
#28 0xb2fd57fa in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#29 0xb676fa97 in QEventDispatcherGlib::processEvents (this=0x8071d50, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#30 0xb5cbfd6a in QGuiEventDispatcherGlib::processEvents (this=0x8071d50, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#31 0xb673b96d in QEventLoop::processEvents (this=0xbfbc8494, flags=...) at kernel/qeventloop.cpp:149
#32 0xb673bc09 in QEventLoop::exec (this=0xbfbc8494, flags=...) at kernel/qeventloop.cpp:204
#33 0xb6740e5a in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1148
#34 0xb5c09fc4 in QApplication::exec () at kernel/qapplication.cpp:3779
#35 0xb77cc94b in kdemain (argc=1, argv=0xbfbc8704) at /usr/src/debug/kdemultimedia-4.7.80/kmix/apps/main.cpp:75
#36 0x0804852b in main (argc=1, argv=0xbfbc8704) at /usr/src/debug/kdemultimedia-4.7.80/build/kmix/kmix_dummy.cpp:3

Reported using DrKonqi
Comment 1 Stefan Majewsky 2011-12-07 20:38:46 UTC 
The crash is also reproducible with Dragon Player, Kaffeine, and MPlayer with audio only, but not with MPD (Music Player Daemon).

Reassigning to the Pulseaudio Backend Component since PA seems to be involved in the crash.
Comment 2 Lasse Liehu 2011-12-11 03:18:07 UTC 
Created attachment 66608 [details]
Crude attempt at finding the cause

Using this crude (bad formatting etc.) patch I see that

"kmix(9489) Mixer_PULSE::removeWidget: MixDevice deleted" is printed and a while later
"kmix(9489) MDWSlider::update: Tying to update even though mixdevice was destroyed"

every time just before the crash happens, so it probably has something to do with MixDevices being automatically destroyed. Also that MixDeviceWidgets aren't correctly removed from ViewDockAreaPopup. See bug 288637 that they don't seem to be added, either.
Comment 3 Lasse Liehu 2011-12-11 03:24:35 UTC 
Created attachment 66609 [details]
New try (the first one wasn't correct)
Comment 4 Lasse Liehu 2011-12-16 16:44:40 UTC 
I can't reproduce this anymore after bug 288637 was fixed.
Comment 5 Christoph Feck 2011-12-22 20:42:44 UTC 
Stefan, can you confirm it is fixed?
Comment 6 Christian Esken 2011-12-30 14:34:14 UTC 
Yes. A test would be very appreciated. It might also be related to 288675. Please try again with the newest from branch 4.8 (or trunk). I might have just fixed that today.
Comment 7 Christoph Feck 2012-03-09 14:53:02 UTC 
*** Bug 295530 has been marked as a duplicate of this bug. ***
Comment 8 Christoph Feck 2012-03-09 14:55:19 UTC 
Bug 295530 is from KDE 4.8.1, so it's not yet fixed.
Comment 9 Karl Ove Hufthammer 2012-03-15 08:00:26 UTC 
Created attachment 69635 [details]
New crash information added by DrKonqi

kmix (4) on KDE Platform 4.8.1 (4.8.1) "release 481" using Qt 4.8.0

- What I was doing when the application crashed:

Stopping Mplayer (KMix was started after starting Mplayer). Note that I’m using KDE 4.8.1.

-- Backtrace (Reduced):
#7  0x00007feeaa708526 in MDWSlider::update (this=0x9d0910) at /usr/src/debug/kdemultimedia-4.8.1/kmix/gui/mdwslider.cpp:1001
#8  0x00007feeaa703d4b in ViewDockAreaPopup::refreshVolumeLevels (this=<optimized out>) at /usr/src/debug/kdemultimedia-4.8.1/kmix/gui/viewdockareapopup.cpp:168
[...]
#11 0x00007feeaa6dccbc in Mixer_Backend::readSetFromHW (this=0x9f36f0) at /usr/src/debug/kdemultimedia-4.8.1/kmix/backends/mixer_backend.cpp:155
#12 0x00007feeaa6ecfa5 in sink_cb (c=<optimized out>, i=<optimized out>, eol=<optimized out>) at /usr/src/debug/kdemultimedia-4.8.1/kmix/backends/mixer_pulse.cpp:191
[...]
#15 0x00007feeac6a73e3 in pa_pdispatch_run () from /usr/lib64/libpulsecommon-1.1.so
Comment 10 Christoph Feck 2012-03-16 15:24:11 UTC 
*** Bug 296158 has been marked as a duplicate of this bug. ***
Comment 11 Christoph Feck 2012-03-16 15:24:41 UTC 
*** Bug 296110 has been marked as a duplicate of this bug. ***
Comment 12 Christoph Feck 2012-03-16 15:25:02 UTC 
*** Bug 296102 has been marked as a duplicate of this bug. ***
Comment 13 Christoph Feck 2012-03-16 15:25:41 UTC 
*** Bug 296079 has been marked as a duplicate of this bug. ***
Comment 14 Christoph Feck 2012-03-16 15:26:16 UTC 
*** Bug 296010 has been marked as a duplicate of this bug. ***
Comment 15 Christoph Feck 2012-03-16 15:26:40 UTC 
*** Bug 295969 has been marked as a duplicate of this bug. ***
Comment 16 Christoph Feck 2012-03-16 15:27:12 UTC 
*** Bug 295907 has been marked as a duplicate of this bug. ***
Comment 17 Szymon 2012-03-16 15:27:16 UTC 
Created attachment 69672 [details]
New crash information added by DrKonqi

kmix (4) on KDE Platform 4.8.1 (4.8.1) using Qt 4.8.0

- What I was doing when the application crashed:
nothing special, some konsole and chrome and thunderbid
- Unusual behavior I noticed:
nothing unusual
- Custom settings of the application:
nothing

-- Backtrace (Reduced):
#7  0x00967975 in MDWSlider::update (this=0x9477938) at ../../kmix/gui/mdwslider.cpp:1001
#8  0x009626d3 in ViewDockAreaPopup::refreshVolumeLevels (this=0x94771c0) at ../../kmix/gui/viewdockareapopup.cpp:168
#9  0x0095f41f in ViewBase::qt_metacall (this=0x94771c0, _c=QMetaObject::InvokeMetaMethod, _id=<optimized out>, _a=0xbfef4980) at ./viewbase.moc:87
#10 0x00962082 in ViewDockAreaPopup::qt_metacall (this=0x94771c0, _c=QMetaObject::InvokeMetaMethod, _id=30, _a=0xbfef4980) at ./viewdockareapopup.moc:73
#11 0x017aa4ad in metacall (argv=0xbfef4980, idx=30, cl=QMetaObject::InvokeMetaMethod, object=0x94771c0) at kernel/qmetaobject.cpp:245
Comment 18 Christoph Feck 2012-03-16 15:27:42 UTC 
*** Bug 295835 has been marked as a duplicate of this bug. ***
Comment 19 Christoph Feck 2012-03-16 15:28:26 UTC 
*** Bug 295801 has been marked as a duplicate of this bug. ***
Comment 20 Christoph Feck 2012-03-16 15:36:11 UTC 
*** Bug 295867 has been marked as a duplicate of this bug. ***
Comment 21 Christoph Feck 2012-03-16 15:37:39 UTC 
*** Bug 295642 has been marked as a duplicate of this bug. ***
Comment 22 gv 2012-03-16 17:18:44 UTC 
Created attachment 69675 [details]
New crash information added by DrKonqi

kmix (4) on KDE Platform 4.8.1 (4.8.1) using Qt 4.8.0

- What I was doing when the application crashed:
watching video online. It often crashes but only when flash is involved

-- Backtrace (Reduced):
#6  0x00007f25b3399753 in MDWSlider::update (this=0x107f290) at ../../kmix/gui/mdwslider.cpp:1001
#7  0x00007f25b339500b in ViewDockAreaPopup::refreshVolumeLevels (this=<optimized out>) at ../../kmix/gui/viewdockareapopup.cpp:168
#8  0x00007f25b3392311 in ViewBase::qt_metacall (this=0x106ef20, _c=QMetaObject::InvokeMetaMethod, _id=<optimized out>, _a=0x7fffba789530) at ./viewbase.moc:87
#9  0x00007f25b33949e0 in ViewDockAreaPopup::qt_metacall (this=0x106ef20, _c=QMetaObject::InvokeMetaMethod, _id=<optimized out>, _a=0x7fffba789530) at ./viewdockareapopup.moc:73
[...]
#11 0x00007f25b33b10cc in Mixer::qt_metacall (this=0xf3db50, _c=QMetaObject::InvokeMetaMethod, _id=<optimized out>, _a=0x7fffba789680) at ./mixer.moc:82
Comment 23 Jekyll Wu 2012-03-17 00:26:30 UTC 
*** Bug 296184 has been marked as a duplicate of this bug. ***
Comment 24 Jekyll Wu 2012-03-17 08:28:05 UTC 
*** Bug 296194 has been marked as a duplicate of this bug. ***
Comment 25 Jekyll Wu 2012-03-18 00:03:33 UTC 
*** Bug 296231 has been marked as a duplicate of this bug. ***
Comment 26 Jekyll Wu 2012-03-18 00:05:24 UTC 
*** Bug 296235 has been marked as a duplicate of this bug. ***
Comment 27 Jekyll Wu 2012-03-18 12:31:52 UTC 
*** Bug 296269 has been marked as a duplicate of this bug. ***
Comment 28 Thilo-Alexander Ginkel 2012-03-18 20:29:43 UTC 
I think I may have figured out one potential trigger for this crash: KMix reliably SIGSEGVs during login when I have "Add virtual output device for simultaneous output on all local sound cards" on papref's "Simultaneous Output" tab enabled.

Disabling this setting gets rid of the crash.

I hope this sheds some light on how to reproduce the issue.
Comment 29 Jekyll Wu 2012-03-19 07:21:08 UTC 
*** Bug 296322 has been marked as a duplicate of this bug. ***
Comment 30 Jekyll Wu 2012-03-19 11:02:21 UTC 
*** Bug 296341 has been marked as a duplicate of this bug. ***
Comment 31 Jekyll Wu 2012-03-19 12:33:27 UTC 
*** Bug 296345 has been marked as a duplicate of this bug. ***
Comment 32 Christoph Feck 2012-03-19 13:07:41 UTC 
*** Bug 296352 has been marked as a duplicate of this bug. ***
Comment 33 Jekyll Wu 2012-03-19 16:03:17 UTC 
*** Bug 296361 has been marked as a duplicate of this bug. ***
Comment 34 Jekyll Wu 2012-03-19 16:04:18 UTC 
*** Bug 296355 has been marked as a duplicate of this bug. ***
Comment 35 Jekyll Wu 2012-03-19 16:15:38 UTC 
*** Bug 296356 has been marked as a duplicate of this bug. ***
Comment 36 Jekyll Wu 2012-03-20 02:41:13 UTC 
*** Bug 296392 has been marked as a duplicate of this bug. ***
Comment 37 Jekyll Wu 2012-03-20 06:34:12 UTC 
*** Bug 296408 has been marked as a duplicate of this bug. ***
Comment 38 Jekyll Wu 2012-03-20 10:03:21 UTC 
*** Bug 296419 has been marked as a duplicate of this bug. ***
Comment 39 Jekyll Wu 2012-03-20 19:32:29 UTC 
*** Bug 296454 has been marked as a duplicate of this bug. ***
Comment 40 Jekyll Wu 2012-03-20 19:37:57 UTC 
*** Bug 296449 has been marked as a duplicate of this bug. ***
Comment 41 Doncho N. Gunchev 2012-03-20 22:58:00 UTC 
I also have "Simultaneous Output" enabled (see Comment 28) and am using Fedora 15, package: kdemultimedia-kmix-4.8.1-1.fc16.x86_64. Similar backtrace to the one in Comment 22.
Comment 42 Jekyll Wu 2012-03-21 05:09:55 UTC 
*** Bug 296479 has been marked as a duplicate of this bug. ***
Comment 43 Jekyll Wu 2012-03-21 05:17:25 UTC 
*** Bug 296466 has been marked as a duplicate of this bug. ***
Comment 44 Jekyll Wu 2012-03-21 23:34:06 UTC 
*** Bug 296517 has been marked as a duplicate of this bug. ***
Comment 45 Jekyll Wu 2012-03-22 15:25:00 UTC 
*** Bug 296557 has been marked as a duplicate of this bug. ***
Comment 46 Jekyll Wu 2012-03-22 16:48:51 UTC 
*** Bug 296568 has been marked as a duplicate of this bug. ***
Comment 47 Jekyll Wu 2012-03-23 10:10:02 UTC 
*** Bug 296570 has been marked as a duplicate of this bug. ***
Comment 48 Jekyll Wu 2012-03-23 10:10:11 UTC 
*** Bug 296601 has been marked as a duplicate of this bug. ***
Comment 49 Jekyll Wu 2012-03-23 15:07:34 UTC 
*** Bug 296628 has been marked as a duplicate of this bug. ***
Comment 50 Jekyll Wu 2012-03-24 01:26:03 UTC 
*** Bug 296639 has been marked as a duplicate of this bug. ***
Comment 51 Jekyll Wu 2012-03-24 01:27:05 UTC 
*** Bug 296592 has been marked as a duplicate of this bug. ***
Comment 52 Jekyll Wu 2012-03-24 01:27:30 UTC 
*** Bug 296646 has been marked as a duplicate of this bug. ***
Comment 53 Jekyll Wu 2012-03-24 16:53:37 UTC 
*** Bug 296684 has been marked as a duplicate of this bug. ***
Comment 54 Jekyll Wu 2012-03-25 03:28:23 UTC 
*** Bug 296717 has been marked as a duplicate of this bug. ***
Comment 55 Jekyll Wu 2012-03-25 12:01:59 UTC 
*** Bug 296730 has been marked as a duplicate of this bug. ***
Comment 56 Jekyll Wu 2012-03-25 16:50:05 UTC 
*** Bug 296754 has been marked as a duplicate of this bug. ***
Comment 57 Jekyll Wu 2012-03-26 14:52:39 UTC 
*** Bug 296815 has been marked as a duplicate of this bug. ***
Comment 58 Jekyll Wu 2012-03-27 03:55:37 UTC 
*** Bug 296842 has been marked as a duplicate of this bug. ***
Comment 59 Jekyll Wu 2012-03-27 03:58:50 UTC 
*** Bug 296843 has been marked as a duplicate of this bug. ***
Comment 60 Jekyll Wu 2012-03-27 11:15:45 UTC 
*** Bug 296863 has been marked as a duplicate of this bug. ***
Comment 61 Jekyll Wu 2012-03-27 13:55:03 UTC 
*** Bug 296880 has been marked as a duplicate of this bug. ***
Comment 62 Jekyll Wu 2012-03-27 16:06:28 UTC 
*** Bug 296886 has been marked as a duplicate of this bug. ***
Comment 63 Jekyll Wu 2012-03-27 16:07:09 UTC 
*** Bug 296809 has been marked as a duplicate of this bug. ***
Comment 64 Jekyll Wu 2012-03-27 19:58:57 UTC 
*** Bug 296919 has been marked as a duplicate of this bug. ***
Comment 65 Christian Esken 2012-03-27 20:08:37 UTC 
Testers needed for Trunk version of KMix. This is a good time to test if you can easily reproduce the crash (I am not able to do so at all, as it never crashes for me, independent on the chosen Backend).
The complete change to MixDevice is commited to trunk. There is more to do (especially for hotplug/unplug of complete cards), but this change is the most important one. If at all, I am expecting memory leaks but hopefully this should bring a lot of stability.

PS: This bug report (and the duplicates) are similar to bug 290742. This here deals with the DockArea and the latter with the main window. Both are about referencing a "dead"/destroyed MixDevice.
Comment 66 Christian Esken 2012-03-27 21:51:06 UTC 
Merging all bug reports that have a backtrace that indicates access to a dead/destroyed MixDevice to Bug 290742

*** This bug has been marked as a duplicate of bug 290742 ***
Comment 67 Eugene 2012-03-28 01:06:01 UTC 
(In reply to comment #65)
> Testers needed for Trunk version of KMix. This is a good time to test if you
> can easily reproduce the crash (I am not able to do so at all, as it never
> crashes for me, independent on the chosen Backend).
> The complete change to MixDevice is commited to trunk. There is more to do
> (especially for hotplug/unplug of complete cards), but this change is the
> most important one. If at all, I am expecting memory leaks but hopefully
> this should bring a lot of stability.
> 
I can test KMix at least in terms of crash after exiting from suspent-to-RAM state as it crashes all the time in that case for me.
Comment 68 Mekenok HearsCrow 2012-03-28 11:49:21 UTC 
I can help test too. on my system (SuSe 12.1 KDE 4.8.1) Kmix crashes on every system boot - easily reproducable.
Comment 69 Thiyagarajan 2012-03-28 12:23:00 UTC 
I can also test, fedora 16

Sent from my iPhone

On Mar 28, 2012, at 6:49 AM, Mekenok HearsCrow <turtlevt@yahoo.com> wrote:

> https://bugs.kde.org/show_bug.cgi?id=288441
> 
> --- Comment #68 from Mekenok HearsCrow <turtlevt@yahoo.com> ---
> I can help test too. on my system (SuSe 12.1 KDE 4.8.1) Kmix crashes on every
> system boot - easily reproducable.
> 
> -- 
> You are receiving this mail because:
> You are on the CC list for the bug.
Comment 70 Jekyll Wu 2012-03-29 08:01:58 UTC 
*** Bug 296989 has been marked as a duplicate of this bug. ***
Comment 71 Jekyll Wu 2012-03-29 08:02:20 UTC 
*** Bug 296998 has been marked as a duplicate of this bug. ***
Comment 72 Jekyll Wu 2012-03-29 08:02:37 UTC 
*** Bug 297013 has been marked as a duplicate of this bug. ***
Comment 73 Jekyll Wu 2012-03-30 07:29:11 UTC 
*** Bug 297087 has been marked as a duplicate of this bug. ***
Comment 74 Jekyll Wu 2012-03-30 11:58:10 UTC 
*** Bug 297103 has been marked as a duplicate of this bug. ***
Comment 75 Jekyll Wu 2012-03-30 11:58:31 UTC 
*** Bug 297096 has been marked as a duplicate of this bug. ***
Comment 76 Carlos R. 2012-03-30 12:21:08 UTC 
It doesn't crash anymore in 4.8.1 "release 483". Using openSUSE tumbleweed.
Comment 77 Carlos R. 2012-03-30 12:33:08 UTC 
I'm sorry but I've just tried to close the player and  it still crashes, I had another problem with kmix. In my case it also crashed when I turned on the usb sound card, this problem has vanished but this  one  keeps on doing it.
Comment 78 Jekyll Wu 2012-03-30 15:04:56 UTC 
*** Bug 297125 has been marked as a duplicate of this bug. ***
Comment 79 Jekyll Wu 2012-03-31 07:58:44 UTC 
*** Bug 297155 has been marked as a duplicate of this bug. ***
Comment 80 Jekyll Wu 2012-04-02 07:40:04 UTC 
*** Bug 297276 has been marked as a duplicate of this bug. ***
Comment 81 Jekyll Wu 2012-04-04 07:24:04 UTC 
*** Bug 297431 has been marked as a duplicate of this bug. ***
Comment 82 Darkface 2012-04-09 01:42:44 UTC 
Created attachment 70248 [details]
New crash information added by DrKonqi

kmix (4) on KDE Platform 4.8.2 (4.8.2) using Qt 4.8.0

- What I was doing when the application crashed:

Suring on the web with the Browser Google Chrome and watching a video on youtube

-- Backtrace (Reduced):
#7  0x00007fad96599756 in MDWSlider::update (this=0x17266c0) at ../../kmix/gui/mdwslider.cpp:1001
#8  0x00007fad9659500b in ViewDockAreaPopup::refreshVolumeLevels (this=<optimized out>) at ../../kmix/gui/viewdockareapopup.cpp:168
#9  0x00007fad96592311 in ViewBase::qt_metacall (this=0x1725220, _c=QMetaObject::InvokeMetaMethod, _id=<optimized out>, _a=0x7fff0ffa8450) at ./viewbase.moc:87
#10 0x00007fad965949e0 in ViewDockAreaPopup::qt_metacall (this=0x1725220, _c=QMetaObject::InvokeMetaMethod, _id=<optimized out>, _a=0x7fff0ffa8450) at ./viewdockareapopup.moc:73
[...]
#12 0x00007fad965b10cc in Mixer::qt_metacall (this=0x16bd5c0, _c=QMetaObject::InvokeMetaMethod, _id=<optimized out>, _a=0x7fff0ffa85a0) at ./mixer.moc:82