In summary, I restart my 10.7.4 Update on my Untel with a vanilla kernel 11.4.0, I added the kernel of R:A:W: X86 by renaming it "custom" and then with the flag custom -legacy GraphicsEnabler=No PCIRootUID=1 -v (EAH 5870)

Nikel!

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Macmini early 2006 /blanGsak 10.7.2
Acer 8930 G / core2duo T6500 / NV 9600 GS m / Lion 10.7.3 / ML 10.8.2 / w7/8
Asus M5A97pro / FX 8350 / Asus HD 7950 CUII v2
GA-78LMT SP2 / FX 6100 / P x4 960t / Sapphire HD 4850 1024
MSI K9neo v1 / Atlon 4800+/ Gigabyte HD 5450 512
test kernel 12.0 AMD

Tuto : http://www.hack-my-mac.fr/index.php/...fx-buldo#28896

CG opérationnelle : HD 5450 512 / HD 4850 1 / GT 610