Robert Tsai wrote:
I had the same symptoms.
Have you first tried the normal analog audio ports to make sound is
working at all? If the analog audio isn't working, then maybe you have
a deeper problem. (I encountered a Dell motherboard where the normal
audio port in Linux was actually the *surround* port in Windows.)
Yes, analog sound works fine. I had to plug some headphones into the speaker jack to test it, because I don't have anything to convert from the 1/8" stereo plug to the RCA plugs I'd need to plug it into my receiver, but that was one of the first things I tried.
Assuming that that much is working, try the following two commands in sequence:
amixer set 'IEC958 Playback AC97-SPSA' 3 amixer set 'IEC958 Playback AC97-SPSA' 0
The last one (setting to "0") is the important one, which you've
alluded to. It's supposed to be idempotent (e.g., just establishing
some configuration), but I consistently have to *change* the value to
zero to get SPDIF audio working properly, so I've just placed these
two commands into my myth user's .login
No luck, unfortunately. I get the same behavior after doing that. I do notice something interesting about the output, though. Running the first command gives me:
--- Simple mixer control 'IEC958 Playback AC97-SPSA' 0 Capabilities: volume volume-joined Playback channels: Mono Limits: 0 - 3 Mono: 3 [100%] ---
Is the "Playback channels: Mono" normal?
I haven't used aplay because I don't have any WAV files; I was using
mpg321 with some mp3s as my test program for playing music.
I've just been using /usr/share/sounds/beg.wav. I'll bet you have a bunch of little wav files you could try, too. Using mpg321's "-a" option would work if I knew which device the SPDIF output is.
Anyway, you've already mentioned that you've fiddled with the above alsamixer settings, so maybe you have something else going wrong, but the above two amixer commands do the trick for me.
FWIW, I have a Soltek SL-K8TPro-939 motherboard (same VIA VT8233 audio
chip).
Yeah, it seems to be pretty common. My desktop machine has one, too. It actually has a TOSLINK output also... maybe I should try hooking that box up to my receiver, just for kicks...
Thanks,
Shawn. _______________________________________________ mythtv-users mailing list [email protected] http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
