I lost HDMI as audio output device when I updated to Linux Mint 20.2
Using Nvidia 460 from drivers interface plus this change below, gave me back the audio HDMI output option.
Add this
pcie_port_pm=offin /etc/default/grub
so it looked like this
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash pcie_port_pm=off"
and updated grub with
sudo update-grub
The above was originally posted by summonholmes over at forums.linuxmint.com
My /etc/modules
already contained
nvidia
nvidia-drm
nvidia-modeset
Maybe relevant, maybe not.
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