here is the link I posted above in case it didn't work for you:
http://tinyurl.com/cj4orl
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no sound with jaunty 2.6.28 (amd64) kernel
https://bugs.launchpad.net/bugs/360862
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ubuntu-bu
I may have the same problem as well. I upgraded to Jaunty 9.04 -
2.6.28-11 (i686) and lost all sound. I rebooted to 9.04 - 2.6.27-11
kernel and sound was working again. Rebooted back to 2.6.28 and no
sound.
My system info is posted here...
http://www.alsa-
project.org/db/?f=13519edd8c5e2b59216