Re: i810 audio

Alan Cox (alan@lxorguk.ukuu.org.uk)
12 Nov 2002 23:38:04 +0000


On Tue, 2002-11-12 at 23:06, Brian C. Huffman wrote:
> Alan / All,
>
> I assume this is the patch that's been in your -ac kernels for a
> while? I have an Intel 845GBV board which uses the ICH4 architecture.
> I'm happy to report that this patch does allow me to use the integrated
> sound on this motherboard, but one thing that I've noticed is that it
> seems as though to adjust volume you need to adjust the actual channel
> (PCM, CD, etc), rather than main volume. Any ideas why this might be so?

It could be the mixer on your board doesnt support main volume control.
The i8xx audio is half of a whole, it deals with transferring streams of
audio data and mixer requests down an AC'97 audio bus to a codec which
does the D/A parts. That codec varies by board.

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