With xorg-server-1.5.3 and above X will work on most graphic cards without an xorg.conf file. I attached a patch to enable the x-setup script to continue without. Reproducible: Always
Created attachment 204869 [details, diff] x-setup-xorg.patch
Created attachment 204874 [details] create a blank xorg.conf This also works and lets x-setup continue and X started fine with xorg-server-1.5.3 and intel card
Fixed in Sep 22 iso.