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 (

You received this bug notification because you are a member of Ubuntu-X,
which is subscribed to nvidia-settings in Ubuntu.

  nvidia-prime can't switch off the discrete GPU

To manage notifications about this bug go to:

Mailing list: https://launchpad.net/~ubuntu-x-swat
Post to     : ubuntu-x-swat@lists.launchpad.net
Unsubscribe : https://launchpad.net/~ubuntu-x-swat
More help   : https://help.launchpad.net/ListHelp

Reply via email to