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

[Robert P. J. Day]

On Fri, 17 Jun 2011, Rashkae wrote:

> On 06/17/2011 12:13 PM, Robert P. J. Day wrote:
> > so it would seem that there's my problem -- ACLs have not been set
> > properly on all of the /dev/snd/* files.  but why not?  a quick google
> > brings me here:
> >
> >    http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=593881
> >
> > which sure looks like what i'm fighting with.  i just need to peruse
> > that page more carefully to figure out why this is happening and what
> > i need to do about it.  in the meantime, i'm open to suggestions.
> >
>
> The ACL permissions are set with this script as part of udev:
>
> /lib/udev/rules.d/70-acl.rules
>
> However, if you don't really care about ACL permissions being dynamically
> added to the logged in user, you can simply add yourself (and any other user)
> to the audio group, reboot, and be done with.
>
> And... welcome, btw.

  nope, that wasn't the problem.  the problem was that, mysteriously,
as i was upgrading my kernel source to build a newer kernel, i somehow
managed to *de*select the kernel config option TMPFS_POSIX_ACL, with
predictably disastrous consequences.

  as soon as i isolated the problem, i simply re-selected that option,
built a new kernel, and all was right with the world again.  how i
managed to lose that config setting is still a mystery.

rday

-- 

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

Twitter:                                       http://twitter.com/rpjday
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