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Date:      Wed, 05 Oct 2011 09:00:47 -0700
From:      Carl Johnson <>
Subject:   Re: snd_hda: how to configure line-in passthrough to line-out?
Message-ID:  <87k48j4eds.fsf@oak.localnet>
In-Reply-To: <alpine.DEB.2.00.1110042034450.15340@coral> (Brandon Kuczenski's message of "Tue, 4 Oct 2011 20:58:14 -0700 (PDT)")
References:  <alpine.DEB.2.00.1110042034450.15340@coral>

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Brandon Kuczenski <> 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

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