Got this to work this weekend on Ubuntu 9.04 with mythtv.22. Someone in another site/forum said to modify /etc/modprobe.d/alsa-base.conf and add this line to it:<br><br>options snd-hda-intel enable_msi=0 probe_mask=0xffff,0xfff2 (if your Nvidia card is card 1)<br>
<br>And to create this file in your home directory: .asoundrc<br><br>with this info:<br><br>pcm.!default {<br>type asym<br>playback.pcm {<br>type plug<br>slave.pcm "hw:1,3"<br>}<br>}<br><br><br>The WIKI said to modify /etc/modprobe.d/sound.conf - I don't recall touching that file - but it does exist - and has that same options line above in it.<br>
<br>I'm using the HDMI interface on this card btw: <a href="http://www.newegg.com/Product/Product.aspx?Item=N82E16814127454">http://www.newegg.com/Product/Product.aspx?Item=N82E16814127454</a><br><br>Also I removed the ALSA packages alsa-base and alsa-utils prior to downloading/compiling Alsa source. Since that removes alsamixer and aplay I had to download alsa-util source and compile/install also. If the linux gurus could comment on the need for that would be great.<br>
<br>The above info is only is your Nvidia card is for card 1.....from some digging I found this information - I think it's correct but YMMV....<br><br>options snd-hda-intel enable_msi=0 probe_mask=0xfff2 = Card 0<br>options snd-hda-intel enable_msi=0 probe_mask=0xffff,0xfff2 = Card 1<br>
options snd-hda-intel enable_msi=0 probe_mask=0xffff,0xffff,0xfff2= Card 2<br><br><br><br><br>