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Date:      Mon, 20 Apr 2020 09:12:26 +0200
From:      Hans Petter Selasky <hps@selasky.org>
To:        Terin Stock <terinjokes@gmail.com>, freebsd-multimedia@freebsd.org
Subject:   Re: USB Audio Recording Yamaha MG12XU
Message-ID:  <9f0f1910-ec77-057c-8ca8-16e064bdf032@selasky.org>
In-Reply-To: <CAAWJHN2YrWHRToi3KYFyeqC72BcqhkLyLqX5UGGYBBoGErp%2BTA@mail.gmail.com>
References:  <CAAWJHN2YrWHRToi3KYFyeqC72BcqhkLyLqX5UGGYBBoGErp%2BTA@mail.gmail.com>

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On 2020-04-19 23:47, Terin Stock wrote:
>    $ systctl dev.pcm.4
> dev.pcm.4.feedback_rate: 0
> dev.pcm.4.bitperfect: 0
> dev.pcm.4.buffersize: 0
> dev.pcm.4.rec.vchanformat: s16le:2.0
> dev.pcm.4.rec.vchanrate: 48000
> dev.pcm.4.rec.vchanmode: fixed
> dev.pcm.4.rec.vchans: 1
> dev.pcm.4.play.vchanformat: s16le:2.0
> dev.pcm.4.play.vchanrate: 48000
> dev.pcm.4.play.vchanmode: fixed
> dev.pcm.4.play.vchans: 1
> dev.pcm.4.hwvol_mixer: vol
> dev.pcm.4.hwvol_step: 5
> dev.pcm.4.%parent: uaudio1
> dev.pcm.4.%pnpinfo:
> dev.pcm.4.%location:
> dev.pcm.4.%driver: pcm
> dev.pcm.4.%desc: USB audio

Likely your device does not provide a hardware mixer control for 
recording, so that's why mixer doesn't have any "rec" device. Only for 
playback we provide a software volume control in that case!

--HPS



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