I found the solution installing screen-resolution-extra 0.18 from https://packages.ubuntu.com/focal/screen-resolution-extra using dbkg -i place where u downloaded deb file.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1822937 Title: NVIDIA settings won't write to /etc/xorg To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/nvidia-settings/+bug/1822937/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs