|06-10-06, 02:31 PM||#1|
Join Date: Mar 2004
How can I get SPDIF with ALSA?
I've been searching and searching so many places. I found a lot of solutions, but none of them works for me. Well, here's my problem.
I have a Asus A8N-SLI motherboard (nForce4 chipset). I'm using the onboard soundcard. I'm not using the nForce drivers from NVidia, since they're OSS only. I'm running Ubuntu-5.10 with the stock alsa-drivers. Everything is fine except SPDIF - I can't make it work! I've connected my receiver with the coax output on my soundcard using a coax-cable. The sound works fine in Windows XP.
I don't have a .asoundrc file. I've checked the IEC958 settings in alsamixer, plus I've tried muting them, turning them all the way up, all the way down. If I play a song in eg. mplayer with:
mplayer -ao alsa:device=spdif test.mp3
What could be the problem? Any ideas?
If I can make the SPDIF work, is there then a way to get all sounds send to both the normal speakers AND the SPDIF?
|08-24-06, 04:00 PM||#3|
Join Date: Jan 2005
Re: How can I get SPDIF with ALSA?
Okay, there's a little trick to it. Unfortunately for you et al I cannot give the specific setting but can tell you ALSA is pulling some, IMO, strange things: The AC97(IEC9whatever) is non-contiguous levels 0, 1, 2 ...
It looks like a some kind of volume control but it is not.
On my system(NV2200 & 2050 chipset), to get 5.1 SPDIF out, IIRC, I had to set the AC97 to 1.
Best thing to do is run
and let it configure everything (most likely there won't be sound... yet);
and set the PC SPEAKER and other volume controls to acceptable levels.
While there, try the first 'notch' for the IEC* as that might work on your system too.
IIRC, you have to restart alsa.
I that fails because the description is so bad, try Google and look for SPDIF and Mandrake. There is a post in the old MandrakeUser forum which provides basically the same info but in more detail.
Hope that helps...
BTW, I did the same thing you did: all the way down, all the way up, etc. It won't work that way. It's eiher the 'first' notch or 'third' notch, can't rem which. I cannot test here. My digital system is down so I have no connection for the onboard (digital) audio to use.
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