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nvidia hdmi audio | The FreeBSD Forums
https://forums.freebsd.org/threads/nvidia-hdmi-audio.30536/
The peculiar thing ( with reference to the output below) is that I had to use unit 1 for output ( sysctl hw.snd.default_unit=1 ). Zero-two-three did not work. gong:~% cat /dev/sndstat FreeBSD Audio Driver (newpcm: 64bit 2009061500/amd64) Installed devices: pcm0: <HDA NVidia GT240 HDMI PCM #0 DisplayPort> (play) pcm1: <HDA NVidia GT240 HDMI PCM ...
Sound via HDMI in FreeBSD | NVIDIA GeForce Forums
https://www.nvidia.com/en-us/geforce/forums/off-topic/25/133161/sound-via-hdmi-in-freebsd/
Nvidia (specifically ION) HDMI Sound | The FreeBSD Forums
https://forums.freebsd.org/threads/nvidia-specifically-ion-hdmi-sound.21476/
HDMI sound depends on two components: Xorg video driver should negotiate sound parameters with your TV and snd_hda driver should play sound via HDMI HDA device. I have no idea about NVIDIA, but I know AMD drivers have special Xorg options to enable HDMI audio. Make sure you have configured everything right there.
Chapter 7. Multimedia | FreeBSD Documentation Portal
https://docs.freebsd.org/en/books/handbook/multimedia/
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