- Jul 30, 2010
- OSX 10.7.2
- Core i7-930
- Classic Mac
- Mobile Phone
redratto said:justruss said:redratto said:
I've got the same card. I get full acceleration and speed using the 3 10.6.7 ATI kexts in S/L/E for my Lion install. To be more specific, those are kexts version 1.6.26. In fact, these kexts (1.6.26) in lion give me 35 FPS in Cinebech, vs. 32 with the same kexts but the rest of the system also 10.6.7.
Further, I can confirm that using this card-- same as you-- DVI works fine with Lion and Lion original ATI kexts. In other words, 10.7 works fine with this card-- but mini DP is simply not working when the ATI kexts included in Lion are used instead of the 10.6.7 kexts.
Right now I am running Lion 10.7 with vanilla kexts on ATI 5770 (XFX HD-577X-ZMF3) and ACD 27” connected to MiniDP with full acceleration. Cinebench score of 37.
Anyways, here is what I did. Used vanilla kexts for 10.7. In ATI5000Controller.kext, opened Info.plist and replaced Langur with Vervet. Saved and repaired permissions. That’s it.
The reason acceleration did not work before was that I was missing the ATIRadeonX3000 plugin and bundle files--not sure why they did not copy over.
Regarding the framebuffer discussion from above, turns out the drivers for the Vervet framebuffer, while not mentioned in Info.plist of the ATI5000Controller.kext, are present in the controller file. When you open the controller file in Hexedit you can see references to Vervet. Without a reference to Vervet in ATI5000Controller.kext only the DVI ports will work on the card. By replacing Langur with Vervet, the system activates the MiniDP on the card again.
Thanks for this man but I'm still a bit confused. How do you manage to install Lion in the first place in order to modify the kexts? I still have the issue that my ACD connected to the MDP on my 5770 goes black after booting. What would be the steps to be able to change the kexts if you don't have Lion yet installed?