Black screen after instalation of Mountain Lion

[florin22xxl]

Hi,

First of all this is a list of my pc specs:

CPU-2500K

RAM-8GB

GPU-radeon 5850 1024mb

Sound-Realtek A892

I succesfuly managed to install ML on my pc,i made a dsdt ,sound,network all work perfect.I made my usb stick with unishit and after used multishit.I deleted my 5000controller.kext from the usb,and booted with GE=No.Now once i finish installing,i boot into ML using GE=No,place my 5000controller on desktop and use kextbeast,kextutily even chameleon wizard,all of wich work 100 %!!the problem i have occurs once i restart my pc after i finished adding my graphics card controller(i used repair permisions after instaling the kext,i even tryed without same result).I try to boot with no flags ,but after a few seconds of apple logo my screen TURNS OFF!! ML is loaded in the background,and if i unplug my dvi and plug it back,i am good to go.Everything works 100 %,my card is beeing recconized as 5850 1024mb,everything works as it should.Help me pls fix my black screen at the start!!! I even added my card id wich is 6899 to amdaccelerator and to the cotroller,still black screen!! i added atiConfig and used my graphics "family" Uakari,nothing seems to fix my black screen at the start of ML.....I am out of ideeas...

this is my kernal panic when i boot with -v WAIT=YES

Help pls!

[ssd_20072]

use nullcpupowermanagement

[florin22xxl]

i used dsdt,fakesmg and nullcpupowermanagement in multishit.System boots fine,everything works 100 %,untill i put video kexts,after that i get this kernal panics.

[artur-pt]

hello

see this and read

http://Olarila.com/forum/viewtopic.php?f=18&t=736

in 10.8 the kext for ati are changed

good hack

[florin22xxl]

hello

see this and read

http://Olarila.com/forum/viewtopic.php?f=18&t=736

in 10.8 the kext for ati are changed

good hack

yes i saw that post i changed the device ID's for the controller and amdaccelerator am i suposed to do something with the atisuport kext?in the topic it only sayd to modify the controller and the accelerator.I did those steps,im my first post i said i added aticonfig-Uakari,all is done as in the topic.I will post later some pic with the modifications i made.

[artur-pt]

hello

5850 what familly is ?

must edit the radeonacelerator in the right family name

try another frame buffer like

Gibba

Vervet

in boot write

AtiConfig=framebuffer

good hack

[florin22xxl]

Ati 5850 is under Cypress family,and i have a device ID of 6899 ,i replaced under cypress family in amdaccelerator.For 5850 the framebuffer is Uerika but i will try your sugestions later. I will also post some more prints to show how are my files set up,infoplist etc. What about my kernal panics in the print above? As i mentioned i have the kext for powermanagement install from multishit,so i dont know what is that kernal panic related too...everytime i make some changes to the amdaccelerator should i rebuil permisions from disk utility?

[artur-pt]

hello

if u change a system kext until is right , no , but when is good u should repair the permissions with disk util

if u run disk util and repair permissions u see what i tell.

good hack

[florin22xxl]

I've been messing around,trying all the suggestions from above,same thing everytime... Screen goes black,if i run -v i get the kernal panic i printed up. Anyone how to fix that kernel panic?

Tks again for all the sugestions so far.