[Bug 388081] Re: audio skips, pulseaudio -vvv shows underrun in module-alsa-sink.c

[Chris Hermansen]

Upgraded to 10.04 and now I have a stuttering problem with music played
over Rhythmbox.

I have added the -VVV flag and I get these kind of messages:

May  2 08:46:26 temuko pulseaudio[1287]: alsa-sink.c: Underrun!
May  2 08:46:26 temuko pulseaudio[1287]: alsa-sink.c: Increasing wakeup watermark to 30.00 ms
May  2 08:47:20 temuko pulseaudio[1287]: alsa-sink.c: Underrun!
May  2 08:47:20 temuko pulseaudio[1287]: alsa-sink.c: Increasing wakeup watermark to 40.00 ms
May  2 08:47:21 temuko pulseaudio[1287]: alsa-sink.c: Underrun!
May  2 08:47:21 temuko pulseaudio[1287]: alsa-sink.c: Increasing wakeup watermark to 50.00 ms
May  2 08:48:40 temuko pulseaudio[1287]: alsa-sink.c: Underrun!
May  2 08:48:40 temuko pulseaudio[1287]: alsa-sink.c: Increasing wakeup watermark to 60.00 ms
May  2 08:49:28 temuko pulseaudio[1287]: client.c: Created 10 "EsounD client (UNIX socket client)"
May  2 08:50:20 temuko pulseaudio[1287]: alsa-sink.c: Underrun!
May  2 08:50:20 temuko pulseaudio[1287]: alsa-sink.c: Increasing wakeup watermark to 70.00 ms
May  2 08:50:21 temuko pulseaudio[1287]: alsa-sink.c: Underrun!
May  2 08:50:21 temuko pulseaudio[1287]: alsa-sink.c: Increasing wakeup watermark to 80.00 ms
May  2 08:54:20 temuko pulseaudio[1287]: alsa-sink.c: Underrun!
May  2 08:54:20 temuko pulseaudio[1287]: alsa-sink.c: Increasing minimal latency to 1.00 ms
May  2 08:56:20 temuko pulseaudio[1287]: alsa-sink.c: Underrun!
May  2 08:56:20 temuko pulseaudio[1287]: alsa-sink.c: Increasing minimal latency to 2.00 ms
May  2 08:56:21 temuko pulseaudio[1287]: alsa-sink.c: Underrun!
May  2 08:56:21 temuko pulseaudio[1287]: alsa-sink.c: Increasing minimal latency to 4.00 ms
May  2 08:58:20 temuko pulseaudio[1287]: alsa-sink.c: Underrun!
May  2 08:58:20 temuko pulseaudio[1287]: alsa-sink.c: Increasing minimal latency to 8.00 ms
May  2 08:58:21 temuko pulseaudio[1287]: alsa-sink.c: Underrun!
May  2 08:58:21 temuko pulseaudio[1287]: alsa-sink.c: Increasing minimal latency to 16.00 ms

I have also seen the wireless noise floor messages although not today.

I have added my name to the pulse and pulse-access group.  There is no
pulse-rt group (?)

I added the following line to /etc/pulse/client.conf and restarted

extra-arguments = --log-target=syslog --realtime=1 --high-priority=1
--fail=1 -vvv

I am currently using an external USB DAC, a total bithead.

-- 
audio skips, pulseaudio -vvv shows underrun in module-alsa-sink.c
https://bugs.launchpad.net/bugs/388081
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