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Date: Fri, 4 Jan 2008 17:54:22 +0300 (MSK)
From: Yuriy Tsibizov <Yuriy.Tsibizov@gfk.ru>
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To: Rick Mullis <probsd@gmail.com>
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Cc: freebsd-multimedia@freebsd.org, Yuriy Tsibizov <Yuriy.Tsibizov@gfk.com>
Subject: Re: SB Live 5.1 Digital noise in digital mode 7.0RC1
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On Wed, 2 Jan 2008, Rick Mullis wrote:

> Hi Yuriy,
>
> I have been having an issuse with my SB Live 5.1 Digital card. Has
> anything changed with the source code for the Creative Labs SB Live
> 5.1 Digital sound card(snd_emu10kx)? Everything was working great on
> FBSD 7.0 Beta3 but when I installed a fresh copy of FBSD 7.0RC1 all I
> get is digital noise from my speakers. I am using the same
> configuration as I did in Beta3. I have searched the source code and
> the archives but I don't see where anything has changed.

Rick, I can reproduce your problem on my hardware. If I understand
correctly, you use digital connection to speakers and in 'digital'
mode there are some analog signal on 'digital I/O' jack making
digital signal too distorted.

It looks like a bug in DSP routing code (for shure) and AC97 codec 
interaction (maybe). I wonder why it worked before, in 7-BETA3 (will try 
to reproduce it later).

Yuriy.