Re: changing sound parameter on startup
/etc/rc.local?
On Sat, 26 May 2012 13:40:01 -0700, Ross Boylan writes:
> Simple version: what's the best way to get the effect of
> echo 1024 > /proc/asound/card0/pcm0p/sub0/prealloc
> every time I start, preferably before KDE starts?
>
> I've seen indications I should put something in rcS.d/, but also some
> things saying stuff there gets executed at every run level change.
> Also, I'm not sure where in the sequence it needs to be.
>
> Longer version: The underlying issue is that I've been having problems
> with sound under mythtv. Hardware:
> Audio device: Intel Corporation 82801G (ICH7 Family) High Definition
> Audio Controller (rev 01) on a Pentium 4.
>
> When myth starts it was complaining that I had a buffer too small and
> that its attempts to reset it with the above command failed. After
> disabling sound on KDE I was able to resize the buffer. I'm still
> having sound problems, though I think not quite as frequently as before.
>
> One solution would be to resolve the permission problem.
>
> There are a lot of things I can think of that might be relevant to
> either the permission issue or the buffer size issue: udev, module
> parameters (e.g., /etc/modutils.d/), sysctl.conf (but I think that's
> only for /proc/sysfs), maybe some other alsa-specific place.
>
> So I'd appreciate any guidance you can offer.
>
> Thanks.
> Ross Boylan
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