NVIDIA driver and X Server

[Aries01]

Hello

I wish to use the Octane rendering program on Ubuntu 12.04, and a prerequisite for using the program is the installation of a graphics card driver downloaded from NVIDIA. My problem is that during the installation X Server must be disabled, and I don't know the correct procedure for doing that. Is it even possible to disable X Server when using Ubuntu via the GUI?

[nativehound]

alt+f2 then login then enter:

sudo stop lightdm

To restart the gui

sudo start lightdm

alt+f7 if necessary