Excellent - Ill take a look at this. In answer to your question I used the last option in Hackinstaller - the Chimera boot loader (as it states better support of the Nvidia 5xxx cards).
The weird thing is I can install with the 580 no probs but was going to black on boot up. I actually got round the '1st boot up after install' by dropping in an old radeon gfx, booting with -v GraphicsEnabler=No. Ran Hackinstaller going thru steps 3 to 5 inc the dsdt. Plist edited the boot with GraphicsEnabler=Yes. Shutdown. Swapped out the Radeon with the GTX 580 and rebooted on the drive. Everything's fine apart from when I shutdown the computer never actually switches off after killing the drives. I have to press down the power button for a few seconds.Which kext will fix this? (Ive installed the kexts EXACTLY as Digital Dreamer's Mountain Lion kext pack hack installer into /Extra - with the only kext going into S/L/E is AppleHDA.kext)
Thanks for the help.
Digital Dreamer's vanilla dsdt patch - what exactly does it patch? Also whats the benefits of Firmware F13?
I haven't had much luck with kexts going in /Extra. I have everything going in to S/L/E.
Haven't seen much of a difference in F13, and haven't had any problems with F12 or F13.
Again, might want to download d00d's dsdt and give that run, fixed many of my demons for this board.