Comment 56 for bug 776999

FYI if you still need something from xorg.conf on a recent system, you should look at things like HAL configuration.

But to do a quick fix with xorg.conf stuff, you can create little files in "/usr/share/X11/xorg.conf.d" with only a section (or part of a section). This path should be visible if you look at your xorg startup log.

This also allow easier management of all the little hacks you could do.