Comment 7 for bug 1757180

Well, I have been able to solve the problem and I am able to use nvidia driver again. The problem is that nvidia-prime blacklist nvidia driver. The file is "/etc/modprobe.d/blacklist-nvidia.conf" with content:
# Do not modify
# This file was generated by nvidia-prime
blacklist nvidia
blacklist nvidia-drm
blacklist nvidia-modeset
alias nvidia off
alias nvidia-drm off
alias nvidia-modeset off

File was never re-established, even when uninstalling/purging nvidia-prime package. I think that this file should be re-established/deleted when you uninstall nvidia-prime.

Thanks Alberto and other maintainers for your hard work maintaining nvidia packages (