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hdmi with gt220 - upgrade alsa?
http://forum.linhes.org/viewtopic.php?f=23&t=21248
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Author:  bouncey [ Fri Jul 23, 2010 12:33 am ]
Post subject:  hdmi with gt220 - upgrade alsa?

My new nvidia gt220 card is working delightfully well so far for 1080p video over HDMI. Sound, not so much. It's like the kernel sees a sound device there but doesn't know what to do with it.

I was looking at the instructions here:

http://wiki.xbmc.org/?title=HOW-TO_set_up_HDMI_audio_on_nVidia_GeForce_G210%2C_GT220%2C_or_GT240

...and it suggested that I might need alsa version 1.0.23 or later. Doing "cat /proc/asound/version" turns up 1.0.18rc3.

How hard is it to upgrade alsa beyond that? Tried the usual pacman upgrade commands but it claims to have the latest already. Could I grab a package file from another distro that uses pacman and just drop it in? Is there a bleeding-edge repository for LinHES that I could switch to with a more recent version of alsa?

Thanks!

Author:  bouncey [ Fri Jul 23, 2010 11:16 am ]
Post subject: 

I compiled the latest version of ALSA from source. Now it works, more or less. It's passing sound over HDMI but it quits working after rebooting and it sounds like the right channel is being turned into center somehow. Also some video files won't play any sound at all, and sometimes it quits working even without a reboot.

It doesn't help that I couldn't compile alsactl. Something about not being able to download and verify an XML DTD. XML for man page source? And it causes the compile to fail?? Not sure what these guys were thinking.

But still, partial success is a big step in the right direction.

Author:  manicmike [ Tue Jul 27, 2010 4:54 pm ]
Post subject: 

bouncey wrote:
It doesn't help that I couldn't compile alsactl. Something about not being able to download and verify an XML DTD. XML for man page source? And it causes the compile to fail?? Not sure what these guys were thinking.


The file that alsactl writes when it performs a store (which I assume is what you are looking for) is simply ascii text. You could write one yourself for the moment (although it may be wiser to ask one of the folks on the xbmc forum for a copy of theirs). I would try to find the bit it's attempting to retrieve and try to bypass it or hard code something. Have you Googled for the error? The apps that don't work probably have their own config files. For example, it your mythtv using mplayer or xine to play videos? What happens if you use Internal?

Also, after reading your post I looked into how much these cards are. Getting HDMI working properly would be really nifty (I could then not turn the DTS amplifier on sometimes - hooray!). So, I may be able to help you later: I'll be off today or tomorrow to buy a GT220 and will fiddle with it in the coming week. If, like you, I have to compile alsa then I'll do so and post the results.

Thanks again :-)

Mike

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