At Sat, 12 Oct 2002 17:18:49 +0200, Jan Bernatík wrote: > > Dne pá 11. říjen 2002 16:41 Takashi Iwai napsal(a): > > At Fri, 11 Oct 2002 16:24:36 +0200, > > > > Jan Bernatík wrote: > > > Hallo everyone > > > > > > I have alsa drivers 0.9rc3 working with my via8233 (ALC650) onboard > > > soundcard. But I really don't know, if there is some way to play > > > 4-channel stereo (neither with S-bracket nor without it). In alsamixer I > > > don't have "rear speaker" option or something like that ... I installed > > > windows just to try if it's working there, and it is (with new driver > > > downloaded from realtek, whan i open windows sound mixer i have "rear > > > speaker" option). So I'm asking for help or some documentation about that > > > ... if it exist. > > > > the via82xx driver itself supports the multi-channel playback, simply > > by setting up and passing 4-channel interleaved samples. > > but, i guess, the problem is the multi-channel output on this codec. > > there are some vendor-specific registers for multichannel controls on > > ALC650, but they are still not supported on the alsa driver, mainly > > due to lack of hardware for tests. > > > > i'll let you know if the experimental patch is ready. > > > > > > ciao, > > > > Takashi > > Thank U a lot. > I think U are probably really busy, but i want to thank you > for what are you doing. I'm starting with programming, i want to contribute to > opensource as well.
the attached is a patch to control switches for surround, center/lfe pins. you'll have "Line-In As Surround" and "Mic As Center/LFE". if you don't get sounds even after changing "Surround" and "Center", "LFE" volumes and switches, please try to change the values above. Takashi
alc650-fix.dif
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