[SUCCESS] ASUS-P7P55D

My specs are:

Asus P7P55D
i5 750
gtx 460 + 8800 gt
crucial m4 128gb
and an old sound blaster audio card (probably useless information for most of the people. just to put the information out there; kx audio drivers are still working in mountain lion. but anyway... )

The installation went smooth. Though got only screen output from 8800 gt when I got to desktop. First I made a UserDSDT install from multibeast using the supplied DSDT for my mobo from the database. Didn't work ( it wasn't working in Lion either), so I made another UserDSDT install from multibeast with a custom DSDT which I've generated before and which was working with Lion. Well, that didn't work either. I had both cards shown in system profiler, though could achieve output only from 8800gt.

So I decided to make an EasyBeast install, after which I've finally got my 3 displays with full acceleration ( obviously with graphicsenabler=yes). To get the sleep working I've downloaded "sleepenabler universal" from osx86.net (not sure if I'm allowed to give links, so just search it ), and my sleep is working like a charm now, along with everything else.

Thanks to tony and the whole gang!

Also working here!

Asus P7P55D-E
i5 2.76Ghz
GeForce 9800 GT
Intel SSD
8GB 1337 MHz DDR3

Like OP I had tried the DSDT's and was having no luck whatsoever. I could boot into the system, but performance was incredibly choppy, and simply not good enough. I then removed the "Extras" folder and removed AppleHDA from the "Extensions" folder and ran MultiBeast with the following settings:

- Easy Beast Install
- System Utilities
Drivers & Bootloaders
- Kexts & Enablers
-- Audio
--- Universal
---- VoodooHDA 0.2.56 (Sound is working perfectly on my end!)
-- Network
--- Lnx2Mac's Realtek 81xx Ethernet

After running MultiBeast, and restarting, my system came back running smooth as silk, with crystal clear audio! Good luck everyone.

Hi, I have the same Mobo and ML installation went well. But there is one problem for DVD player software. Error as initialization error 70012. Do you have this problem?