1.1 After Intrepid installed in text mode by default, reboot and hit right before OS boots. This brings up the Grub Menu for boot option.
1.2 From the available modes, select the one ended with "(recovery mode)" then enter to boot.
1.3 Login as root at prompt in text mode.
1.4 Produce the X configuration file according to your own system
# X -configure
This generates a file named xorg.conf.new under $HOME folder of the user.
1.5 Copy the new xorg.conf to and backup the original one
# cp /etc/X11/xorg.conf /etc/X11/xorg.conf.viabak
# cp $HOME/xorg.conf.new /etc/X11/xorg.conf