sound problems - still

[Dave]

On Wednesday 26 January 2005 08:43 pm, Mike Thatcher wrote:
> I recently upgraded from RH 8.0 to FC3. I have not been successful in
> getting sound to work since the upgrade. I've updated to the latest
> alsa, kernel, etc and still have no sound. I've check the bootrom and
> audio is enabled, power is applied to speakers.  other details below -
> if anyone has some suggestions on what else I can try

 Everybody else is going to tell you about checking mixer settings and making 
sure the master channel is not muted, but that didn't help me one bit. It 
turned out to be some odd quirk with my particular sound device (via82xx). I 
started out with NO sound at all. Here's the things that finally got mine 
working:

 1. I updated the kernel, and sound started working--barely. I had to have the 
physical volume control turned all the way up to 11 to get a whisper out. 

 2. There are apparently quirks with many sound cards that the drivers can 
compensate for ... but how to find out if yours qualifies, I have no clue. 
Maybe the source? It turned out that the only volume control that worked was 
the headphone level--not the master control (which is a pain when you want to 
mute and have to bring up a full mixer). I had to add "options snd-via82xx 
dxs_support=4 ac97_quirk=1" to my /etc/modprobe.conf. Now I could control the 
sound via the master control.

 3. However, there were still other mixer controls that had an effect. I had 
to scroll over to the far right on alsamixer and kmix, where there are four 
more sliders labelled VIA DXS. I have no clue what they're for, but I have to 
crank the first one up. 

I realize you have a different sound chip, but maybe all this will help you at 
least look at other solutions.