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HDMI audio output under Linux | NVIDIA GeForce Forums
https://www.nvidia.com/en-us/geforce/forums/game-ready-drivers/13/40726/hdmi-audio-output-under-linux/
As far as HDMI audio goes, there is no such thing. You are probably confusing "HD Audio", the generic term for the RealTek, Intel, and Conexant onboard audio chips that can be found on motherboards these days, with "HDMI Audio" which isn't even a technical term for anything. If a manual or whatever says "HD Audio works out of the box."
HDMI Audio Out Not Found (Linux Mint NVIDIA GTX 1050 ...
https://unix.stackexchange.com/questions/423258/hdmi-audio-out-not-found-linux-mint-nvidia-gtx-1050
HDMI Audio Out Not Found (Linux Mint NVIDIA GTX 1050) Ask Question Asked 3 years, 11 months ago. Active 2 years, 4 months ago. Viewed 2k times 0 1. There are no HDMI out audio options available. None of the threads I found on this topic have worked for me. I have included links to useful tutorials I have found for others to benefit from.
HDMI Audio on NVIDIA GPUs
https://download.nvidia.com/XFree86/gpu-hdmi-audio-document/
HDMI Audio on NVIDIA GPUs Stephen Warren, for NVIDIA Linux Support <[email protected]> version 8, 2014-03-04
No HDMI sound w/Optimus in Linux - Linux - NVIDIA ...
https://forums.developer.nvidia.com/t/no-hdmi-sound-w-optimus-in-linux/30785
lspci shows NVIDIA audio in direct hardware access. Now, stop application started by optirun and execute echo ON > /proc/acpi/bbswitch The audio card should be still visible, when you execute “lspci -H 1” (in my case it is) Remove PCI bridge 00:01.0 echo 1 > /sys/bus/pci/devices/0000:00:01.0/remove Make PCI bus rescan. echo 1 > /sys/bus/pci/rescan
[SOLVED] HDMI Video Output Works But No Audio (Nvidia GPU ...
https://bbs.archlinux.org/viewtopic.php?id=264504
However, even though the Nvidia HDMI audio drivers are detected, Pulseaudio says that the HDMI ports are all unavailable. Thus, I have had no success getting audio through the HDMI. I know this is not an issue with the projector, since when I plug in my laptop, which is running Linux Mint, then HDMI sound works fine, and is connected as 'EPSON PJ'.
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