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Date: Fri, 3 Jul 2009 13:46:59 +0000
Message-ID: <3a142e750907030646v68401986pf411d6e4fb8df273@mail.gmail.com>
From: "Paul B. Mahol" <onemda@gmail.com>
To: Alexander Best <alexbestms@math.uni-muenster.de>
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Cc: freebsd-questions@freebsd.org
Subject: Re: Problem with audio apps and mixer
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On 7/3/09, Alexander Best <alexbestms@math.uni-muenster.de> wrote:
> hi there,
>
> i've never had a problem to adjust the volume with audio apps like mplayer
> or
> mpd. recently however i'm experiencing this strange behaviour. the app's
> volume doesn't match the volume that `mixer` reports. here's an example:

CURRENT have VPC.
You can completly disable such feature with this sysctl:
hint.pcm.X.vpc (default=undefined, enabled)
            0=disable, 1=enable
            Notes: The only place to enable/disable vpc.
                   Enabling/Disabling requires driver reload.

here is explanation with more details:
http://people.freebsd.org/~ariff/SOUND_4.TXT.html

-- 
Paul