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From: Arve Barsnes <arve.barsnes@gmail.com>
Date: Sun, 23 May 2021 18:34:16 +0200
Message-ID: <CAJjrzcWFZvfTf4mo1gOakmYqHZep4PdNPR7v=vymbGz4j2S96g@mail.gmail.com>
Subject: Re: [gentoo-user] Audio through second HDMI output on GPU?
To: Gentoo <gentoo-user@lists.gentoo.org>
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On Sun, 23 May 2021 at 18:22, Dale <rdalek1967@gmail.com> wrote:
> If you ever figure it out, please post what did it.  I watch TV from my
> puter too.  Right now, I tell Smplayer to send audio to the TV by giving
> it the device name like you did.  Thing is, none of the entries in the
> drop down menu in settings works.  Odd but it is what it is.

Might be worth checking if the smplayer front-end is messing something
up, by going straight through mpv. My last steps for playing video
through the TV, with the audio going there as well:

Get a list of all the audio devices on your system.
$ mpv --audio-device=help

Use the correct device in your video command.
DISPLAY=:0.1 mpv --audio-device=alsa/hdmi:CARD=NVidia,DEV=0 -fs video.mkv

Also check what Mark mentioned about muted channels on the output card
through alsamixer.

Regards,
Arve