consistent problem with pcm0 audio

Christopher Nehren apeiron+usenet at
Tue Mar 8 20:10:29 PST 2005

On 2005-03-08, Will Saxon scribbled these
curious markings:
> I am using FreeBSD 5-STABLE from Feb 23rd with an onboard VIA 
> VT8237/Avance Logic ALC200 sound controller. Periodically, 
> sound will stop working. I will get the last note (sound
> packet?) repeated over and over until I close the program. Any
> further attempt to play a sound will cause the same note to be 
> repeated. I am not able to reload the driver. Correct sound is 
> restored when I reboot the computer.

Couple of things that I've found will muck up your sound:

o ACPI, as you mentioned. Be glad that you can even get your system to
boot with ACPI. Mine crashes within 10 seconds of hitting Enter at the
boot menu.

o Threading libraries. games/doomlegacy exhibits behaviour endemic of a
sound buffering / channel issue (sound stuttering and playing slowly
during periods of high activity, working better during periods of less
activity) for me when it runs with libpthread. I spent *hours* (okay,
I'm a Doom addict, I'll admit it) trying to diagnose the problem in the
mindset that it was a buffering / channel problem, when all I had to do
was set it to use libc_r in libmap.conf.

Best Regards,
Christopher Nehren
I abhor a system designed for the "user", if that word is a coded
pejorative meaning "stupid and unsophisticated". -- Ken Thompson
If you ask the wrong questions, you get answers like "42" and "God".
Unix is user friendly. However, it isn't idiot friendly.

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