Hi.
Replying to my own mail with a set of new informations. Maybe those are of some help:
- no distortions under vista (doesn't help me much as I don't use it -g-)
- my revision id is different from what is expected within patch_realtek.c so I made the necessary adjustments (changed the id, and put patch_alc883 in place) and at least the volume seems to be back to normal now under 5.1 output (my revision id: 0x100101)
- those distortions worsened though: with the alc882 (6stack-dig) code, muting the surround channel during 5.1 output quit those distortions on the center channel. (not an option, but a clue) Now I have to mute front and surround channel to quieten those distortions. Things get worse also when I switch to 8 channel in alsamixer.
I have already looked around the net to find a data sheet for the ALC889A but there seems to be none available. A nice comparision chart on the Realtek site though made me believe that the chip is actually closer to the ALC885 than the ALC883.
By the way I have attached a set of data with the alc883 code in place.
Thanks for any hints or help in advance. I'll happily help where ever I can to get this fixed and working properly.
Best regards, Matthias Dahl