under newer hand-rolled kernel, sound has gone away on ubuntu 11.04

[Robert P. J. Day]

  still having no luck getting sound on my recently-upgraded 11.10
gateway laptop running a newer kernel so here's what i'm going to do.

  i've rebooted to my earlier hand-rolled 2.6.39-rc7-dirty kernel, for
which sound works just fine.  and i have no *compelling* need to be
running the newer 3.0.0-rcwhatever kernel so i'll just work today
using the older kernel and, in the meantime, i'll record all of the
relevant sound-related info i can to act as a baseline for comparison
when i boot the new kernel again and try to fix sound.

  so i'm open to suggestions as to what to record WRT to this working
kernel.  as in my original post, i can make a record of things like:

  * all currently-loaded sound-related modules
  * the contents of /proc/asound(??)
  * the sound-related output of "lspci -v"
  * relevant device files and their permissions(??)
  * contents of config files like /etc/group(??)
  * what i see under Preferences->Sound(??)

and so on and so on.  then, when i've recorded everything worth
recording, i can reboot to the newer kernel and compare.

  keep in mind that the difference is only that i reboot to a newer
kernel.  i don't reconfigure anything manually, so that the packages
are the same, their configuration should be the same and so on.  in
other words, whatever the important difference is, it should be
related only to how something has changed in the newer kernel, not in
the filesystem.

  thoughts?

rday

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Robert P. J. Day                                 Ottawa, Ontario, CANADA
                        http://crashcourse.ca

Twitter:                                       http://twitter.com/rpjday
LinkedIn:                               http://ca.linkedin.com/in/rpjday
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