I have a desktop computer I want to use as file server. It has "stock" Ubuntu 12.04 installed. Ubuntu thinks the computer has an video monitor hooked-up, which it has not. How do I tell Ubuntu it hasn't?
I did uncomment the line
in /etc/default/grub and ran update-grub.
This doesn't seem to do what I want, I still see Xorg and compiz in the process list after a re-boot.
What did I do wrong?