[gobolinux-users] kernel 2.6.22

[kenneth marken]

On Thursday 16 August 2007 16:41:00 Isaac Dupree wrote:
> Lucas C. Villa Real wrote:
> > A new version of the linux recipe has just been commited, and will be
> > made available in a few hours as a tarball (this is an automatic
> > process, please wait some hours before the server rescans the recipe
> > tree).
>

cut 8<

>
> Also I think ALSA-recipes should be updated to 1.0.14 for this kernel
> version (or the updated ALSA-Lib 1.0.14a).  I upgraded ALSA-Lib and
> ALSA-Utils; should I upload these recipes? (there are other ALSA-* that
> I don't have installed...); although sound still doesn't work for me
> (since forever on Gobo), presumably because:
>
> ]dmesg | grep -i -C 1 ALSA
> Advanced Linux Sound Architecture Driver Version 1.0.14 (Thu May 31
> 09:03:25 2007 UTC).
> ALSA device list:
>    No soundcards found.
>
> Even though snd_hda_intel module is automatically loaded, lspci sees the
> sound card, alsaconf seems to be able to detect it... `cat </dev/urandom
>
>  >/dev/dsp`, as root no less, makes no sound.  I'm waiting to
>
> investigate further, until installing a newer Udev than 095 is likely to
> work, since I heard that some newer udev will autoconfigure (obsoleting
> alsaconf) and also udev and kernel version really are closely related.
>
>

i can confim that i have been seeing that odd sound issue. hell i even tried 
installing alsa drivers on its own alongside 2.6.21.x at one point.

thing is that snd-hda-intel is a collection of drivers, and the no soundcard 
thing just indicates that alsa could not make heads or tails of the chip even 
if it in theory was a snd-hda-intel chip.

for me the sound worked, but was weak. after playing around with some settings 
i found that passing a option that made the driver think i was using a targa 
laptop enhanced the sound. but it also seems to have killed my ability to 
mute sound :(

all in all i suspect that snd-hda-intel is basically the winmodem of sound. 
they all label their motherboard with AC97 soundcard, but in reality you need 
a very specific driver to control that soundcard.

best  i can suggest is to download the alsa-driver tar.gz, find the 
alsa-configuration.txt file inside alsa-kernel/Documentation in that tar.gz, 
and look at the snd-hda-intel section.

there you will find a list of model names that you can compare with what you 
get with lspci and then just attempt to modprobe snd-hda-intel with the 
model= option until you find something that works for you, if anything.