linux-kernel - Re: ALSA problems with 2.6.18-rc3

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Date:	Wed, 09 Aug 2006 12:58:48 +0200
From:	Takashi Iwai <tiwai@...e.de>
To:	Andrew Benton <b3nt@...nline.co.uk>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: ALSA problems with 2.6.18-rc3

At Tue, 08 Aug 2006 21:28:21 +0100,
Andrew Benton wrote:
> 
> Hello World,
> I use the optical digital output from my computer and normally it works
> well. However, with a 2.6.18-rc* kernel I have to use alsamixer to get
> any output from it. I tweak the levels till it's working and use alsactl
> store to save it. Normally, when I reboot it's enough to have a
> bootscript run alsactl restore and it should work,  but as I said, with
> a 2.6.18-rc* kernel it doesn't. Every time I have to use alsamixer to
> change the <IEC958 P> setting to A/D Conv and then back to AC-Link again
> to get the diode to come on and start sending a signal to the amplifier.
> And the problems don't stop there. At first it sounds fine but after a 
> few minutes it starts to develop a harsh, tinny, metallic, distorted 
> quality and it becomes unlistenable.
> 
> According to alsamixer v1.0.11, the card is an Intel ICH5 and the chip
> is an Analog Devices AD1981B

There is no influential change in intel8x0 and ac97 stuff between
2.6.17 and 2.6.18.  If it worked with 2.6.17, it must be something
else.


Takashi
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