[alsa-devel] Problems with left audio channel on nVidia MCP61.

[Takashi Iwai]

At Fri, 31 Aug 2007 11:51:31 -0400,
Steven Young wrote:
> 
> 
>   Hi,
> 
>   I am having problems with the left audio channel when using the 
> nVidia MCP61 chipset.  It first cropped up when I bought a new machine
> at home, and at the time I figured it was probably faulty hardware.
> However, I recently acquired another machine with the same chipset, and
> the problem occurs on it too, so now I'm thinking it might be a driver
> problem.
> 
>   The problem is that the left audio channel emits a high-pitched squeal
> whenever the audio device is in use.  The right channel works normally.
> Also, trying to adjust the volume causes all sound to stop working until
> I uninstall and re-install all the modules relevant for sound.
> 
>   I haven't done anything fancy to try and fix the problem since I don't
> know a whole lot about ALSA.  I'm just using whatever configuration
> Ubuntu 7.04 magically decided would be best.
> 
>   lspci of one of the machines is appended.  Can anyone point me in the
> direction of what I need to do to fix this? I searched the mailing list
> archive and couldn't find anything directly relevant.

Did you try the latest ALSA version?


Takashi