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

On Thu, 16 Jun 2011, Ric Moore wrote:

On Thu, 2011-06-16 at 21:22 -0400, Rashkae wrote:
On 06/16/2011 07:16 PM, Robert P. J. Day wrote:
i'm open to suggestions. clearly, it's a very bad thing that
there's nothing listed under sound hardware, but i don't know how to
reconfigure to get it back. thoughts?

rday


Just a few random thoughts, no real knowledge.

The proc would seem to indicate that everything seems to be working
module wise, and this might be some kind of permissions problem.

Try running alsamixer as root in a console and see if you can get some
sound to play as root.

If it works as root, have a look as the ownership and permissions of
your sound devices in /dev. Don't forget to install and use getfacl to
get all the permissions (ACL's are used on /dev nodes.)

If sound still doesn't work as root, I would next check to make sure
your system is really restarting. My debian system at one time got the
kexec-tools package installed, which changed the behavior of
restart/reboot command to load a new kernel without actually rebooting
the hardware. Sound modules didn't like that at all.

This might be way out there, but check /etc/group
Look and see if you have these entries:
audio:x:29:pulse,timidity
pulse:x:115:
pulse-access:x:116:
timidity:x:123:

Of course if you don't have timidity install, ignore the timidity
bits. It's a little thing but, without permissions, pulse doesn't
run. Trouble shooting with a shotgun, Ric

missing timidity bits aside, everything looks fine. keep in mind
that sound worked just fine with an earlier version of the kernel, and
if i reboot to that earlier version, it will once again work just
fine. so it can't be some sort of file misconfiguration as that
wouldn't change simply rebooting to a different kernel.

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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