Subject: Re: auich in -current/i386
To: Greywolf <email@example.com>
From: Charles M. Hannum <firstname.lastname@example.org>
Date: 02/28/2001 18:11:41
On Wed, Feb 28, 2001 at 02:55:59PM -0800, Greywolf wrote:
> On Wed, 28 Feb 2001, Amitai Schlair wrote:
> # Date: Wed, 28 Feb 2001 15:32:24 -0500 (EST)
> # From: Amitai Schlair <email@example.com>
> # To: firstname.lastname@example.org
> # Subject: auich in -current/i386
> # I'm running a -current kernel (1.5S) and userland from about four days ago
> # on my Dell OptiPlex GX110. The onboard audio works wonderfully for CD
> # playthrough, but not for audio files. Do I need to somehow configure the
> # audio device? (The onboard audio on my previous machine Just Worked.)
> I had very much the same problem with my onboard audio on my inhel
> all-in-wonderboard. I also couldn't get the damn video to work right.
> There's no codec in the kernel for that board, so audio manipulation
> doesn't work at all.
That comment makes absolutely no sense.
The issue is that the auich actually violates the AC97 spec by not
including a sample rate converter onboard. Normally it's paired with
an AC97 codec that supports the variable rate extension. I'm pretty
sure that the AD1881 codec supports variable rate, in some fashion,
based on past discussions with one of the designers -- but it may do so
in a non-standard way, or it may not report that it does.