Assertion 'pa_idxset_isempty(c->clients)' failed at pulsecore/core.c:176, function core_free(). Aborting.

I should have mentioned, the sure way to trick this is play a video then skip back or forward. The sound will cease completely and in more than 70% of cases Pulseaudio crashes on my machine. Alternatively one can just let the movie play and it will crash in a matter of minutes normally. Sound in this configuration is quite literally unusable in Karmic.

Have you tried the testing version of PulseAudio in the audio-dev PPA? You can find it here: http://launchpad.net/~ubuntu-audio-dev/+archive

If you could test your setup with that package, it would be much appreciated.

Thanks.

the ppa version seems more stable however I did see a segfault (cause unknown), both my cards were muted (in what appears to be several places in both the notification area applet and pavucontrol).

skipping back and forward seems improved though but I would like to do more extensive testing before I declare this problem solved.

Nope the test version isn't any better, it still fails miserably when you skip in a video. The sound disappears, PA does a lot of things and then:

I: main.c: Daemon terminated.

Now I would have liked to capture a full log of this, however when I do pulseaudio -vvvvv > pa.log the resulting file is empty. It also likes to complain that PA is already running and doing pulseaudio -k just results in a respawn.

Please advice.

killall pulseaudio && pulseaudio -vvv|tee pa.log

On Jul 24, 2009 5:25 PM, "David Nielsen" <email address hidden> wrote:

Nope the test version isn't any better, it still fails miserably when
you skip in a video. The sound disappears, PA does a lot of things and
then:

I: main.c: Daemon terminated.

Now I would have liked to capture a full log of this, however when I do
pulseaudio -vvvvv > pa.log the resulting file is empty. It also likes to
complain that PA is already running and doing pulseaudio -k just results
in a respawn.

Please advice.

-- Assertion 'pa_idxset_isempty(c->clients)' failed at pulsecore/core.c:176,
function core_free()....

TO get a log of pulseaudio's activity, you need to firstly ill all pulseaudio related processes. To prevent autospawning, please close all audio related applications.

Then from a terminal, run "pulseaudio -vvv > pulse.log 2>&1" to get all the output thats needed.

Then play your video, or whatever you do to trigger the failure.

Thanks.

Here's the log file, I did exactly the same thing, however this time it ended up with a hard CPU limit reached ending to my audio fun. Meanwhile making the rest of the desktop winderfully unusable.

This bug was fixed in the package pulseaudio - 1:0.9.22~0.9.21+341-g62bf-0ubuntu1

---------------
pulseaudio (1:0.9.22~0.9.21+341-g62bf-0ubuntu1) lucid; urgency=low

  * New snapshot based on stable-queue git branch (testing requested
    specifically by upstream)
    - LP: #164745, #173212, #201391, #204536, #207796, #210016, #221038,
    - LP: #226342, #230408, #236423, #237443, #250059, #269585, #274304,
    - LP: #274577, #275474, #277532, #277566, #277932, #278025, #280534,
    - LP: #283049, #286816, #287036, #292732, #298011, #298301, #300290,
    - LP: #302038, #311497, #311853, #324062, #339448, #344057, #348979,
    - LP: #350829, #356206, #367379, #367544, #369822, #371897, #374846,
    - LP: #375570, #381801, #399515, #402950, #403786, #408169, #409322,
    - LP: #409723, #410326, #410446, #417695, #417976, #419271, #421072,
    - LP: #422774, #423979, #424655, #425028, #427016, #431072, #432660,
    - LP: #437640, #437996, #442191, #443306, #443389, #446719, #449762,
    - LP: #455417, #461532, #464652, #483191, #497537, #503780
  * debian/patches/:
    + add: 0099-change-configure-git-version-tag.patch: Match released
           upstream 0.9.21 for shlibs and LIBPULSE_VERSION_INFO
    - drop: 0004-set-tsched0.patch (no longer relevant)
            0050-revert-pacmd-poll-argv.patch (no longer relevant)
            0056-dont-bail-on-sound-class-modem.patch (merged)
            0056-ignore-sound-class-modem.patch (merged)
            0058-Backport-4c793.patch (merged)
            0059-Backport-978d3.patch (merged)
            0060-fix-implicit-func-decl-cpu-arm.patch (merged)
            0061-Backport-c5fdb.patch (merged)
            0070-dont-bail-on-sound-class-modem-devs.patch (merged)
    + refresh: 0001-change-resample-and-buffering.patch
               0090-disable-flat-volumes.patch
               0091-dont-load-cork-music-on-phone.patch
               0057-load-module-x11-bell.patch
 -- Daniel T Chen <email address hidden> Thu, 14 Jan 2010 20:33:05 -0500