Re: 8 channels not detected on CMI 8768

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Paul Rupe wrote:

[snip]
> Card 0 is the onboard hda-intel device. -Dsurround71 plays perfectly out
> of that device on all 8 channels.  Unfortunately, the project I'm
> working on needs to also support an older motherboard that only has a
> intel-8x0 chip with 2 channels, hence the need for the PCI sound card.
>
> For card 1, the only multichannel option I get is surround40, which gets
> the front and rear speakers working, but no side or center channels.
> I'm not sure why the card is being detected as a CMI8738.  The chip is
> labeled 8768/PCI-8ch, and I suppose it could simply be mislabeled, but
> there are 4 analog speaker outputs in addition to the line in and mic.
>
>   
The driver only has plugin support for 4 channels.  Unless it is loading 
the wrong driver you won't be able to get 8 channels without either 
modifying the driver or duplicating the existing channels to the missing 
channels.  I recommend you run the following script for more information 
on your setup.  It scans your PC and puts the results on a website, then 
gives you a link to them.  You can examine the result to see if your 
card is being recognized incorrectly.  Perhaps there is an option you 
can set to specify the correct model.

http://hg.alsa-project.org/alsa/raw-file/tip/alsa-info.sh

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