snd_hda: how to configure line-in passthrough to line-out?

[Carl Johnson]

Brandon Kuczenski <brandon at 301south.net> writes:

> I'm working on the sound on my system running 8.2-RELEASE.  Currently
> I have sound input and output working using snd_hda (i.e. I can record
> on line in, and play it back on line out).
>
> What I would like to do is take the audio coming in on line-in and
> send it back out the line-out "live" without recording it.
>
> Is this easy to do?  I'd appreciate any hints.

I do that all the time, so it definitely is not a problem.  I find on my
card that the output volume is controlled by a combination of 'volume'
and 'mix' settings in mixer(8).  I also must have the 'igain' set to
something above 0, but the volume isn't directly controlled by it.
-- 
Carl Johnson		carlj at peak.org