[Alsa-user] Capture from line and use of ADC on KT6V-LSR with VIA82xx

[JF L. <jf...@ne...>]

Hi,

I am trying to use a sound card on a MSI KT6V-LSR (VIA KT600), with the 
VIA82xx driver. I succeeded in playing sound files, but I have some troubles 
with line-in.

I try to use the spdif output (digital speakers): I enabled the loopback for 
ac97 with:

options snd-ac97-codec enable_loopback=1

It works. Then,

- If I enable DAC: I can here xmms playing in my analogic speakers (headphone) 
AND digital speakers
- If I enalbe ADC: I cannot here xmms in analogic, but I can here now the 
line-in in my analogic speakers (headphone).

But, the problem is: I cannot here the sound from line-in in my digital 
speakers: I here a poor sound, as it was bad encrypted, or modified my 
something. I am sure that the sound "try" to go out of my speakers (because 
it seems to correpond between my headphone (where it works) and the digital 
output).

I tried to play with the dxs support. It changes nothing. In all case, I can 
here the distorded sound. In my mind, it seems that the ADC does not work, or 
try to work but bad...

Any idea ?

Some informations on my system:
- kernel 2.6.3 (Debian)
- Alsa:
ii  alsa-base      1.0.3-1        ALSA sound driver common files
ii  alsa-headers   1.0.3-1        ALSA sound driver header files
ii  alsa-modules-2 1.0.2c-3+deb31 Advanced Linux Sound Architecture (drivers)
ii  alsa-utils     1.0.3-1        Advanced Linux Sound Architecture (utilities
ii  alsamixergui   0.9.0rc2-1-6   graphical soundcard mixer for ALSA soundcard
- Sound card:
00:11.5 Multimedia audio controller: VIA Technologies, Inc. VT8233/A/8235 AC97 
Audio Controller (rev 60)
        Subsystem: Micro-Star International Co., Ltd.: Unknown device 0080
        Flags: medium devsel, IRQ 3
        I/O ports at b800 [size=256]
        Capabilities: [c0] Power Management version 2

(oh, it seems that i have to recompile alsa...)

JFL