# pacman-g2 -Sy nvidia
If you install X, setup will run xconfig, our X configuration utility automatically. First, xconfig will detect your configuration and will create a basic configuration file. Then it will ask you to specify the screen resolution and colour depth. Finally, it will create the real configuration file, with the following extras:
Automatically configures the mouse wheel, if found
Sets keyboard layout according to the selected language
Enables DPMS
Enables users to use the DRI extension
After generating the config file, setup will start the X server. You must click the OK button to confirm to xconfig that the configuration was successful.
If there is built-in 3d acceleration support for your card in X, xconfig will add the necessary entries to /etc/X11/xorg.conf and X will load the module(s).
If you have an ATI or NVIDIA card, you probably need the manufacturer's binary drivers. Obtaining the NVIDIA binary driver is fairly simple:
# pacman-g2 -Sy nvidia
If you have an ATI card, installation will not be more complicated than a simple
# pacman-g2 -Sy fglrx
By default, no root login is permitted on the GUI, the recommended way of running graphical programs as root is to use gksu or kdesu.
To enable it anyway, the following lines should be edited:
For KDM (/usr/share/config/kdm/kdmrc)
AllowRootLogin=false
modify to
AllowRootLogin=true
For GDM (/etc/gdm/gdm.conf)
AllowRoot=false
modify to
AllowRoot=true