[alsa-devel] HDA - AD1986a issues.
tdavis at dsl-only.net
Fri Feb 1 23:57:35 CET 2008
On Fri, 2008-02-01 at 16:13 +0100, Takashi Iwai wrote:
> > Also, I had some very strange audio garbage with the tip on an HD
> Audio platform
> > that normally works ok. I'm going to be tracking it down this
> morning, once I
> > get to work (1 hour). I'm not sure if it is related to the AD1986a
> or the SCH
> > (gcap patch).
> AD1986A has a known problem when you assign the single stream to
> multiple DACs. But, we should have fixed this already in 1.0.16rc2.
Ok, I can confirm on my test system that the HDA-GCAP and HDA-SCH
patches are ok. I tested them on 1.0.15 with an AD1986a and they work
fine. Same system with HG20080130 is aweful. I'm trying to revert the
patch_analog patches one at a time to see which one is the problem.
> > I do know that GCAP returns 2200 on this system, whereas a normal
> > ICH returns 4401. The last bit may be significant (64bit vs 32bit
> stream). I
> > need to reverify the SCH value, but this may be causing the issue.
> This is
> > critical for a launch coming up.
> Hm, this bit hasn't been tested. OK, we need a fix for that.
No need to worry about this bit I guess. It may only be relevant on a
system that runs 64bit OSes, and I'd assume that bit doesn't exist for
systems that can't.
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