why nvidia installer sucks
10:30 <dpkg> nvidia-installer works fine for you today, granted.  Let's say tomorrow Xorg is updated -- the nvidia driver will break.  If you try to uninstall nvidia (nvidia-installer --uninstall), then you  break Xorg badly.  nvidia-installer overwrites files at random, and has NO CONCEPT of package management.  We recommend against using it based on extensive experience.  USE THE DEBIAN PACKAGES. Ask me about <nvidia>.