Re: cs46xx on ThinkPad A22m and poor quality output

Theodore Tso
2002-03-01T01:37:25Z

On Wed, Feb 27, 2002 at 10:17:28AM -0800, Dave Hansen wrote:
> You aren't crazy. Lots of us with T2[012]'s have this problem. It does
> indeed appear to be a problem with the OSS version of the driver.
> Someone had a theory that the APM code stays in an interrupt too long
> and causes the card to get into an unanticipated state, causing the poor
> sound quality.

The way I deal with this is to ahve the following in my apm events script:

case "$1" in
resume)
esdctl off
rmmod cs4281 ; insmod cs4281
rmmod cs46xx ; insmod cs46xx
/etc/init.d/aumix start
esdctl on
esac

The reason for the cs4281 and cs46xx is so that the script will work
both on my X20 as well as my T21.

It's a gross kludge, but it works....

- Ted