OpenSUSE and older ATI hardware with open source radeon driver sucks.
I tried it with RV250 hardware and 3D cannot be enabled.
OpenSUSE gets direct help from X.Org people AFAIK and it still didn't result in working 3D with that older hardware.
Heck, I couldn't get it to work in Ubuntu but after trying a hundred different configurations in xorg.conf, I finally got one that sort of worked. Even Mandriva 2010 had it work OUT OF THE BOX and they don't have even half the resources. Fedora 12 worked, too, out of the box.
It may be a bit out of date as I have to play cat and mouse a lot since the developers keep moving and code around, making new branches / trees and such so if you want to re-write that guide (if even necessary) please post a fresh guide here at phoronix.com/forums. Thank you.