X server is dead, again

apt removed X server yet again.

# apt install nvidia-driver

That should be enough, but if you still have problems with initramfs-tools not installing correctly, for example, try to add '/sbin:/usr/sbin:$PATH' to the PATH, and then re-run `update-initramfs -u`.

If you want to regenerate a xorg.conf file, use `X -configure` without an X server running, then `sudo cp /root/xorg.cong.new /etc/X11/xorg.cong`.