This bug (outdated udev rules that disables important features from nvidia cards: audio over hdmi, USB xHCI Host Controller and USB Type-C UCSI devices) is still present (or at least my file /etc/udev/rules.d/90-mhwd-prime-powermanagement.rules has not been updated).
If this is supposed to work only on new installations (but i think that the two usb devices are still not enabled in the last mhwd-db version) then we probably need to add an entry on the “Known issues and solutions” wiki that explain which lines comment/delete from /etc/udev/rules.d/90-mhwd-prime-powermanagement.rules, otherwise everyone who hasn’t a fresh installation from the new iso will keep this bug forever (or add a script in a new update that patches the current installations).
Here is a possible fix that can use in a feature update/add to the issues wiki (use the same command twice again changing 0x40300 to 0x0c0330 and 0x0c8000 if you also want to enable the usb devices of your card).
2 Likes