[mythtv-users] ALSA proc files and permissions

[Wayne Thomas]

Check that the user you are trying to run mythtv as is a member of the audio
group.  You can check using the command "grep audio /etc/group".  If the
user isn't listed, you've found your problem.  Add them to the group using
the usermod command (i.e. "usermod -a -G audio username", replace username
with the appropriate name).

Ciao

On Wed, May 25, 2011 at 1:17 PM, Robin Gilks <g8ecj at gilks.org> wrote:

> If I run as an ordinary user I get the error
>
> 2011-05-25 23:07:29.616 ALSA, Error: Setting hardware audio buffer size to
> 128
> 2011-05-25 23:07:29.616 ALSA, Error: Error opening
> /proc/asound/card0/pcm1p/sub0/prealloc: Permission denied.
> 2011-05-25 23:07:29.616 ALSA, Error: Try to manually increase audio buffer
> with: echo 128 | sudo tee /proc/asound/card0/pcm1p/sub0/prealloc
> 2011-05-25 23:07:29.616 ALSA, Error: Unable to sufficiently increase ALSA
> hardware buffer size - underruns are likely
>
> This has been documented before but if I try running the frontend SUID
> root then the BBC weather scripts fail due to perl getting huffy running
> as root.
>
> Is there a solution to this?
>
> --
> Robin Gilks
>
>
>
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