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Date:      Wed, 9 Dec 2020 09:25:29 -0800
From:      "Jin Guojun[VFF]" <jguojun@gmail.com>
To:        freebsd-questions@freebsd.org
Subject:   How to play audio on stereo device
Message-ID:  <d1429802-37f5-92c9-c5ec-521c0afddd1f@gmail.com>
In-Reply-To: <20201130223849.237eb9fe@gumby.homeunix.com>
References:  <20201130222149.d7b8783764a036548c29fdd5@web.de> <20201130223849.237eb9fe@gumby.homeunix.com>

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I have a stereo sound card, and audio applications only can use one 
channel at a time.

By default, sound goes out to the Rear port (pcm0). If set 
hw.snd.default_unit to 1, then sound only goes to the Front port (pcm1).

Is anyway to configure system to use both front and rear audio channels?

-Jin


cat /dev/sndstat

pcm0: <Realtek ALC887 (Rear Analog)> (play/rec) default
pcm1: <Realtek ALC887 (Front Analog)> (play/rec)
pcm2: <Realtek ALC887 (Internal Digital)> (play)
pcm3: <USB audio> (play/rec)





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