Many thanks for the detailed reply. You say:
However, looking at my supported-gpus.json ( nvidia-driver-assistant 0.23.44.01-5 (which, according to philm’s solution Nvidia-driver-assistant misdetects older GPUs due to faulty NVIDIA metadata - #38 by philm should be fixed) I have for devid “0x1392”
"legacybranch": "580.xx"
which is why nvidia-driver-assistant recommends
sudo pacman -S linux66-nvidia-580xx
Am I to go ahead with that or should I change that to
sudo pacman -S linux66-nvidia-575xx
Checking availability in pamac, I only have a linux66-nvidia-575xx pkg listed, no linux66-nvidia-580xx, which probably answers my question.