[pulseaudio-tickets] [Bug 46296] Sometimes the PA server needs a restart.

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=46296

--- Comment #4 from Michael Hampton <error at ioerror.us> 2012-03-19 03:27:24 PDT ---
Created attachment 58670
  --> https://bugs.freedesktop.org/attachment.cgi?id=58670
pulseaudio -vvvv during crackling

I'm one of the people experiencing this issue: Intermittently audio will start
crackling, for all streams. It usually will stop and return to normal within a
minute, though quitting the Wine app leaves any other streams (in my case,
amarok) also crackling.

My system is Fedora 16 x86_64, with ALSA 1.0.25, PulseAudio 1.1 and Wine 1.4. I
see this occur when playing World of Warcraft.

I tried the suggestions given the last time I experienced the crackling.
pasuspender echo had no effect, nor did PULSE_NO_SIMD=1. However, tsched=0
changed the crackling from intermittent to constant.

The attached log shows PulseAudio's output when starting WoW with tsched=0 set.

In Wine's output, when the crackling starts, I see the following message
repeated twice:

ALSA lib pcm.c:7339:(snd_pcm_recover) underrun occurred
ALSA lib pcm.c:7339:(snd_pcm_recover) underrun occurred

I am not sure if this is a PulseAudio problem or a problem with the ALSA
PulseAudio plugin. Please tell me if it's the latter. :)

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