T61, kernel 2.6.22-9: no sound out of the box.

I had working sound with ALSA compiled from the alsa-source Ubuntu
package (version 1.0.14-1ubuntu1) with just three (rather than five)
extra patches applied:

 - http://hg.alsa-project.org/alsa-kernel/rev/958b39f3e8dd
 - http://hg.alsa-project.org/alsa-kernel/rev/47ca87407c84
 - http://hg.alsa-project.org/alsa-kernel/rev/ca37aeeeb0ea

I got the patches from http://www.thinkwiki.org/wiki/AD1984.

Now with kernel 2.6.22-10 sound is gone again: lsmod shows that
snd_hda_intel is loaded, alsamixer shows Master and PCM channels at
100%, mplayer -ao alsa thinks that it's playing, but no sound comes from
the speakers or headphones.  I haven't tried compiling ALSA again yet; I
hoped this changelog entry from ./usr/share/doc/linux-
image-2.6.22-10-generic/changelog.Debian.gz would improve matters:

   * ubuntu: Disable snd-hda-intel, in favor of lum updated version

-- 
no sound with 82801H (ICH8 Family) HD Audio Controller
https://bugs.launchpad.net/bugs/122560
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