Mountain Lion + HD7990

[Paradoxxx_1337]

Hi there !

 

First of all, I really enjoyed the two quizz I had to pass to be able to write here, really funny and entertaining ,

 

Anyway, here's my configuration first : 

 

AsRock Z77 Performance

i7 3770k @ 4,5Ghz.

2x GSkill 4Gb & 2x Corsair 4Gb for a Total of 16Gbytes of RAM.

Samsung SSD 840 Pro 256G, Dual booting ML/Windows 7.

And the main culprit.. HD 7990, which contains 2 TahitiXT...

 

SO. 

 

First of All, I started using Mavericks with some distro I had found on the internet, but after reading the forums and posts, I tough it might be easier and better to use my own made stuff. Kinda.

 

So I started with a clean 10.8.4 InstallESD.dmg, which i restored from my Mavericks Hackitosh, and used MyHack to install the whole thing on my 16Gb USB thumb drive.

 

I booted, and installed Mountain Lion as usual, installed my kexts, my dsdt.aml, and everything works, beside... the HD7990.

 

Which is, sort of, annoying, since to use Mountain Lion, I first, gotta go to the BIOS, change the primary graphic adapter to iGPU, then unplug my DVI, and plug it to my mobo, and then I'm able to use ML, as I'm doing right now. 

 

It's actaully beeing detected in the system information app. Sort of : 

 

 

But, for my gaming pleasure, and to not be obligated to swap the DVI and bios option, I'd LOVE to use the HD7990 on my ML installation as when I try to boot with it, it just hangs at the beginning, without going any further.

 

I've found a really few amount of information on this, some guy said he succeed kinda, but it stopped working after he tried something else so..

 

Any more information on this? 

 

If i'd be able to use it, the one that'd give me the solution would have my eternal love. Which is a truly AMAZING accomplishment. 

 

PS : I'm french, excuse my english mistakes...