[Alsa-user] ASROCK K7VT4 (via8235) - mixer doesn't work, sound with noise

[Radoslaw W. <war...@o2...>]

Hi !

I am owner of ASROCK K7VT4 motherboard and I try to make sound working
under Linux but without success till now. Thie motherboard has via 8235 
chipset. I tried to configure alsa 9.x series and now alsa 1.0.1 but
without success till now. Any of the mixer applications doesn't work for 
me: amixer, alsamixer.. and others. For example when I try to change 
Master volume nothing happens and the PCM device I can only mute  of unmute. 
It is not even possible to change it's level. 
Till now all I have achieved is to play some mp3 file
with AlsaPlayer or XMMS, but with noisy sound (noise level is not very hih
but it is all the time file is playing). 
I tryed to configure XMMS with crossfade plugin to convert sound to 48000 Hz
 and use alsa output plugin but sound was not clear too. I
am not able to control volume in XMMS. What is interesting I am
able to control volume level with AlsaPlayer. This is the only place I
found when volume control is working properly. 
I have tryed to load kernel module with different options: dxs_support=1,2,3,4
but none of the configurations works fine. With none of them mixer works properly.
With some of them in mixer appears four
DXS controls. When you try to change volume DXS channel the sound volume
changes but not linear and with cracky sound.
I have read documentation on the alsa project page, and I have searched
the Internet but I havn't found solution of my problem yet. Have I 
missed something ?
Any suggestions welcame.

Some technical data on my configuration:
lspci -nv command says about aduio:

00:11.5 Multimedia audio controller: VIA Technologies, Inc.
VT8233/A/8235 AC97 Audio Controller (rev 50)
       Subsystem: Unknown device 1849:9739
       Flags: medium devsel, IRQ 10
       I/O ports at dc00 [size=256]
       Capabilities: [c0] Power Management version 2

My modutils file contans the following:
# --- BEGIN: Generated by ALSACONF, do not edit. ---
# --- ALSACONF verion 0.9.0 ---
alias char-major-116 snd
alias snd-card-0 snd-via82xx
alias char-major-14 soundcore
alias sound-slot-0 snd-card-0
alias sound-service-0-0 snd-mixer-oss
alias sound-service-0-1 snd-seq-oss
alias sound-service-0-3 snd-pcm-oss
alias sound-service-0-8 snd-seq-oss
alias sound-service-0-12 snd-pcm-oss
options snd major=116 cards_limit=1 device_mode=0660
options snd-via82xx index=0 dxs_support=2

I use Linux Debian sarge (testing).

Thanks for advise,
Radoslaw Warowny
war...@o2...