Re: pcm0 not responding on -CURRENT...

> Date: Mon, 8 Jul 2002 14:48:16 -0700
> From: Chris Doherty <[email protected]>
> Sender: [email protected]
> 
> At some point, Sean Chittenden said:
> > pcm0:play:0: play interrupt timeout, channel dead
> [snip]
> > My best/wild/flailing guess is that one of the airtools did something
> > to my sound card... but I don't know how to reset the hardware config
> > for the snd card.  eh?  -sc
> 
> I get this error reliably on a Thinkpad 600E (under 4.5-stable and
> 4.6-stable) when I try to use sound after a suspend. I use bsd-airtools
> without any problems, though. I looked at the sound driver source but
> haven't had time or motivation to try writing something to reset the
> device. :-)

The problem here is with the integration of the Crystal Sound driver
in pcm with APM. After the card is powered down, it is dead (or worse)
until a re-boot initializes it. Waking up from suspend does not do it.

Since it's really in an unknown state, it can behave very strangely
after a suspend. Dead is probably the best result!

This is not the problem seen here.

R. Kevin Oberman, Network Engineer
Energy Sciences Network (ESnet)
Ernest O. Lawrence Berkeley National Laboratory (Berkeley Lab)
E-mail: [email protected]			Phone: +1 510 486-8634

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