[Alsa-user] via8237 realtek alc655 surround problems

[Kerry H. <ke...@go...>]

        I am trying to get a 5.1 speaker system running on the card in the 
subject line. Running kernel 2.4.30 alsa-driver 1.0.8.
Tried compiling alsa-driver 1.0.9-rc2 but when I inserted the modules I got 
unresolved symbol calloc or similar I did not check the spelling so it could 
have been pgalloc.
I reconfigured the mixer to enable the mic as surround/lfe and line as rear 
and unmuted and set all the volumes.
speaker-test -c6 -Dsurround51:1 (this is the second card in the system) 
produces sound on all speakers except the rear right speaker.
I tested the setup under Windows XPsp2 and all speakers function correctly.
The card is onboard on a Ga7Vt600-1394 system board.
I have tried all values of dxs_support, 0 1 2 3 and 4 with no success. I can 
provide my alsactl.state on request either by http or email.

On an unrelated note I can't play samples at 44100 on this card I get a 
sample rate not supported. Does this card really lock the rate at 48000 or 
can I change the ac97_clock value to 44100? Will ac97_quirks help with this 
or must I use plughw to convert sample rates?
This does work but due to the linear interpolation it sounds crackly and 
horrible. I will try mplayer if I can solve the surround sound problems.
I have used the same card under Win XP and either it converts the sample 
rate for me in software or this card can do it in hardware. I have the 
datasheet but haven't read it yet.

Any place I can find out what all the codec values mean like VRA LDAC SDAC 
FDAC etc? I know the l f and s stand for lfe front or surround or that seems 
to make sense.
Once this is all a little clearer to me i'll go update the wiki so others 
don't have to battle as hard as I have had to to get simlar setups working.

Regards, Kerry.