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

[Robert P. J. Day]

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

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