I've been trying to get the optical out on the swamp board to work. I'm
currently using R4, with just the squeezelite upgrade for sampling. When
I have squeezelite setup for the spdif out and boot the board I get red
on the output for a couple seconds, then it goes black for about a
minute, then comes back on when squeezelite starts up. When I play a
file the reciver I have it plugged into locks on to the signal and says
it is the same sample rate as the file I'm playing. BUT there is no
music. Alsamixer doesn't have any controls for it. I tried stopping
squeezelite and use aplay to play a wav file and get the same results,
receiver locks on and gets the correct sample rate, but no sound. 

I checked the files in /proc/asound and they say the interface is up and
running with the appropriate parameters. I don't see anything in the log
file that would give any indication of anything wrong. I tried the plug
interface and get the same results. 

I tried alsa params of 40::16 and 40::24 and got the same results. 

BTW the swamp board uses a different transmitter than the wandboard and
it IS connected the right way!

I tried plugging the Touch optical out into the receiver and it plays
music just fine so I think the receiver is working well. 

Any ideas what I could be doing wrong?

Thanks,

John S.


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