PoisonDrop

Just thought I'd let everyone know...

I have a Gigabyte HD6850OC. I just upgraded to Mountain Lion 10.8.2 and this card appears to work OOB.

The big news is that the default radeon frame buffer appears to be fixed. I have full acceleration, QE/CI and all that, on ALL THREE monitors with NO personality editing whatsoever (I had originally edited Duckweed). There is NO GraphicsEnabler, AtiConfig, or AtiPorts in my boot.plist. Oh and I'm using Chameleon 2.1 r1830, and that is definitely important. The latest version won't boot with this configuration.

Bottom line: if you have the newest Mountain Lion and are having trouble with your 6xxx, try reverting to vanilla ATI kexts and use a PREVIOUS Chameleon. Worked great for me!