xf86config
: Screen/Video configurationPick the appropriate option from the list to indicate the amount of memory on your video card.
Then you are asked to provide and identifier, the manufacturer, and the model of your card. You can just press enter to skip through these, if you wish.
Next, the program will ask for the type of RAMDAC and Clockchip on your card. If your card was in the database, you should just to tell it to use the values from the database.
If you don't have one of the listed RAMDACs or Clockchips on your card, just press enter when asked what type you have. If you do not have a programmable clock chip, the program will next attempt to probe to find out what clock rates are supported by your clock chip.
xf86config
: Screen/Video configuration