Quote Originally Posted by Maxhysteria View Post
What are the default settings used if the section device in xorg.conf is empty ?
The whole idea of leaving the section empty is to get away from fixed settings. The driver code looks at the connected displays, compares them to whatever you had last time you ran, and makes an educated guess about how you want the displays configured this time.

The simplest and most common example is that if you had the same displays hooked up to the same connectors as last time, then the displays should be configured in the same way as you last set them.