Ati 6950 2Gb Gigabyte no works!! Mountain Lion

[latincorsario]

hello

i have my Ati radeon 6950 2Gb Gigabyte, but it no works with my computer, only see white screen. i´ve tried kext, GE=Yes/No, Chimera, etc.. but nothing! help please.. now i am using my HD 4670 ati, but the 6950 ati is better...

PD: my english isnt good..!
thank!

 

[latincorsario]

someone else to use this video? ..help me please!..
i´ve seen the 6950 2gb Ati Gigabyte works with the hd 4000 or hd 3000.. how i can do that? ..Thank!!

Please help me! My video is http://www.techpowerup.com/vgabios/89215/gigabyte-hd6950-2048-101123.html

Display:

Type: GPU
Bus: PCIe
PCIe Lane Width: x16
VRAM (Total): 3 MB
Vendor: ATI (0x1002)
Device ID: 0x6719
Revision ID: 0x0000
Kernel Extension Info: No Kext Loaded
Displays:
Display:
Resolution: 1024 x 768
Pixel Depth: 32-Bit Color (ARGB8888)
Main Display: Yes
Mirror: Off
Online: Yes