SOund not working on new motherboard

[Roland Smith]

On Mon, Jan 10, 2005 at 07:49:09AM -0600, Jonathan Fosburgh wrote:

> This weekend I upgraded my aging P-III machine to a newAMD Athlon 64
> system. I am running FreeBSD/i386 5.3-STABLE.  This onboard sound on
> my motherboard (ECS 755-A2) probes and the pcm driver loads, but I do
> not get sound.  I receive the following error:
> 
> Jan  9 04:27:06 gw kernel: pcm0: ac97 link rate calibration timed out after 
> 1006794 us
> 
> I have not been able to locate that error message. 

You can find it in /usr/src/sys/dev/sound/pci/ich.c, in the function
ich_calibrate. The error ir reported because two subsequent readings
from a register return the same value. Maybe the assumption that
subsequent reads from that specific register should be different is invalid.

> This is what cat /dev/sndstat says:
> 
> FreeBSD Audio Driver (newpcm)
> Installed devices:
> pcm0: <SiS 7012> at io 0xe000, 0xe100 irq 18 bufsz 16384 kld snd_ich
> (1p/1r/0v channels duplex default)
> 
> Any suggestions on what I should do or should I install my old soundcard?

If you're into shotgun debugging you could try returning the default
value immediately from ich_calibrate, and see if it works. :-)

If you have another working soundcard, I'd plug that in, and disable the
onboard sound in the bios.

Roland
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