This article is from the Frequently Asked Questions for Linux, the Free/Open Source UNIX-like operating system kernel that runs on many modern computer systems. Maintained by David C. Merrill with numerous contributions by others. (v1.0).
A: If you can't seem to get X working using the guidelines above, refer to the XFree86 HOWTO, recent versions of Installation and Getting Started, and the instructions for the XF86Setup program.
The contents of the XF86Config file depend on the your exact combination of video card and monitor. It can either be configured by hand, or using the XF86Setup utility. Read the instructions that came with XFree86, in /usr/ X11R6/lib/X11/etc. The file you probably need to look at most is README.Config.
You should not use the sample XF86Config.eg file which is included with newer versions of XFree86 verbatim, because the wrong video clock settings can damage your monitor.
Please don't post to news:comp.os.linux.x asking for an XF86Config, and please don't answer such requests.
If you have a laptop, look at the Linux Laptop Web page at How Do I Find Out If a Notebook Runs Linux?. Many of the installation notes also have the XF86Config file for the display. If you have a desktop machine, there are a few sample XF86Config files at ftp://metalab.unc.edu/. Refer also to the XFree86 FAQ http://www.xfree.org/FAQ/ and the monitor timings list http:// www.xfree.org/#resources/, and in the /usr/X11R6/lib/X11/ directory of your X distribution.