Set up Gnome in Arch Linux

1.  check what type of video card

         lspci | grep VGA

2.  install video driver

         pacman -Syu xf86-video-intel (for intel graphics card), xf86-video-ati (for ati), xf86-video-nv (for nvidia)

3.  install touchpad driver

         pacman -Syu xf86-input-synaptics

4.  install xorg

         pacman -Syu xorg-server

5.  install xorg-xinit

         pacman -Syu xorg-xinit

6.  install gnome and gdm

         pacman -Syu gnome

         pacman -Syu gdm

7.  enable gdm on startup

         systemctl enable gdm

         pacman -Syu gnome-panel

         pacman -Syu gnome-tweak-tool

         pacman -Syu gnome-themes-extras