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AMD R9 270X 2G - MacPro4,1

AMD R9 270x Apple Mac Pro El Capitan Mac OS X 10.11.x

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#1
quayman

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Hello all !

 

I got an "official" MacPro4,1 (2x2,26 GHtz Nehalem)

with Mac OS X "El Capitan" 10.11.2

and also Windows 8 on an Bootcamp partition.

 

I just bought a SAPPHIRE AMD VAPOR-X R9 270X 2G D5 graphic card.

which seem to work fine on windows 

 

on Mac it is reconnized as "AMD Radeon HD 7xxx 2048 Mo" but relatively work

exept on System information when I click on PCI I got a message say an error occured gathering PCI devices informations.

 

The main problem is it start up with black screen and go directly to my user desktop without any gray apple logo screen and progress bar.

if it is only this, it is ok for me. but when I try to boot with option (to choose which System to boot to) or any other booting option

( Apple + R = to go to Disk Utilities  or even Apple + S = for single user terminal boot)

it didn't work at all, I got a black screen. nothing can be done or happening.

So I'm stuck with my original boot system (OS X or Windows)

 

I read at little about Clover but I'm not sure it is the solution as I am on a real Mac Pro not a Hackintosh.

 

Sorry cause I am a newbie concerning all these matters...

I thanks you very much in advance for any of your help.

Best

keyman



#2
quayman

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ps: I already try the easy install by Vlada : AMD Radeon R9 270 Series
http://www.insanelym...mebuffer-issue/



#3
KemalALKIN

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solution:

use clover fake id for gpu ati (injection menu) write FBNAME to AMD and write fakeid to: 0x68101002

note: try disable-enable inject amd and edid if blank screen

 

note: select display fix in dsdt fixes in clover

 

this solution working on my friend's hackintosh pc r9 270x



#4
TheRacerMaster

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What outputs does the card have? You'll need to flash it for proper boot screen support, and you'll have to do a HW mod (some resistor) to get it to negotiate full link speed.



#5
quayman

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The Outputs are :

1x DVI-I

1x DVI-D

1x Display Port

1x HDMI

 

Thanks







Also tagged with one or more of these keywords: AMD, R9 270x, Apple Mac Pro, El Capitan, Mac OS X 10.11.x


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