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Radeon Compatibility Guide - ATI/AMD Graphics Cards

Api

Joined
Jan 24, 2010
Messages
26
Motherboard
GA-H270M-DS3H
CPU
i5-7600
Graphics
RX 570
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iOS
I have tried iMac 18,1, iMac 18,2 and iMac 18,3. All fail the same way. Take a look at the image of my screen in post #2588. It is the same posting no matter which model I use.
Try this modified EFI-folder and be sure to delete all fakePCIID kexts.
 

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Joined
Aug 18, 2011
Messages
409
Motherboard
ASUS Z390-I Gaming
CPU
i5-9600K
Graphics
RX 580
Mac
iMac, MacBook Pro
Mobile Phone
iOS
sure to delete all fakePCIID kexts
Thanks. I'll give it a try. How do I delete the fakePCIID kexts if they exist in /Library/Extension, and I can't get to single user mode?
 
Last edited:
Joined
Aug 18, 2011
Messages
409
Motherboard
ASUS Z390-I Gaming
CPU
i5-9600K
Graphics
RX 580
Mac
iMac, MacBook Pro
Mobile Phone
iOS
Try this modified EFI-folder and be sure to delete all fakePCIID kexts.
I tried. Same result. Hangs as in screenshot of #2588 posting.

Tried to get the Clover Boot option of 'Ignore Kext' to work by typing 'FakePCIID.kext' on the line. Can' see when booting if this was applied, or I don't know where to look. However after the FakePCIID message on the console the boot hangs as before.

Can someone tell me how to 'remove all FakePCIID.kexts' ?

Shouldn't I be able to boot into the recovery / install mode of this USB installer I'm using? What am I missing here?
 

Gigamaxx

Moderator
Joined
May 15, 2016
Messages
5,919
Motherboard
GIGABYTE Z170M D3H
CPU
i5-6500
Graphics
RX 480
Mac
iMac
I tried. Same result. Hangs as in screenshot of #2588 posting.

Tried to get the Clover Boot option of 'Ignore Kext' to work by typing 'FakePCIID.kext' on the line. Can' see when booting if this was applied, or I don't know where to look. However after the FakePCIID message on the console the boot hangs as before.

Can someone tell me how to 'remove all FakePCIID.kexts' ?

Shouldn't I be able to boot into the recovery / install mode of this USB installer I'm using? What am I missing here?
Did you install fakepciidkexts to Library/Extensions folder?
 
Joined
Aug 18, 2011
Messages
409
Motherboard
ASUS Z390-I Gaming
CPU
i5-9600K
Graphics
RX 580
Mac
iMac, MacBook Pro
Mobile Phone
iOS
Did you install fakepciidkexts to Library/Extensions folder?
I may have. I can't get to single user mode or any mode to check. But I believe so. But since I can't even boot to the USB Installer/Recovery mode - i.e. as if to install High Sierra - I'm not sure this is the problem. Surely a boot to the Installer would ignore the fakepciid kexts in L/E ?

Even if I could how would I remove it and then rebuild the cache?

I have tried using the '-f' boot flag to Clover to get it to ignore the kext cache on boot, but no success. Maybe I have the wrong flag? I have tried to pass a ignore kext option in Clover boot flags, the string "FakePCIID.kext" but that didn't have any effect.

How can I get around this?

Somewhere in this Forum I read a thread about using the Clover Shell and 'map' function to get to the file system. But damn if searching doesn't find that great posting for me. Any links? I read it about a month ago and thought it interesting but now can't find the great step-by-step instructions of getting to Clover file system access.
 

Gigamaxx

Moderator
Joined
May 15, 2016
Messages
5,919
Motherboard
GIGABYTE Z170M D3H
CPU
i5-6500
Graphics
RX 480
Mac
iMac
I may have. I can't get to single user mode or any mode to check. But I believe so. But since I can't even boot to the USB Installer/Recovery mode - i.e. as if to install High Sierra - I'm not sure this is the problem. Surely a boot to the Installer would ignore the fakepciid kexts in L/E ?

Even if I could how would I remove it and then rebuild the cache?

I have tried using the '-f' boot flag to Clover to get it to ignore the kext cache on boot, but no success. Maybe I have the wrong flag? I have tried to pass a ignore kext option in Clover boot flags, the string "FakePCIID.kext" but that didn't have any effect.

How can I get around this?

Somewhere in this Forum I read a thread about using the Clover Shell and 'map' function to get to the file system. But damn if searching doesn't find that great posting for me. Any links? I read it about a month ago and thought it interesting but now can't find the great step-by-step instructions of getting to Clover file system access.
Have you tried disabling IGPU in bios? I noticed KBL in the pic you posted.
 
Joined
Aug 18, 2011
Messages
409
Motherboard
ASUS Z390-I Gaming
CPU
i5-9600K
Graphics
RX 580
Mac
iMac, MacBook Pro
Mobile Phone
iOS
Last edited:
Joined
Aug 18, 2011
Messages
409
Motherboard
ASUS Z390-I Gaming
CPU
i5-9600K
Graphics
RX 580
Mac
iMac, MacBook Pro
Mobile Phone
iOS
:crazy::banghead::banghead::banghead:
I'm still dead in the water.

I can't get my USB HS Installer to boot to the Repair screen. Any Apple boot just ends up with a stop, as I posted in #2588 above.

I have tried booting with the IGPU, same result. I can take the USB installer to my GA-Z97X hack and boot it fine .

I can run Windows 10 on this Hack, Z270 and there are no problems.

Surely attempting to boot to the USB installer ignores every kext and kernel and cache on my HS OSX SSD ?

Is this thread dead? Am I writing to /dev/null ?

In summary I'm trying to get this Z270 hack to boot with a brand new Sapphire Pulse RX580. I just can't.
 
Joined
Aug 18, 2011
Messages
409
Motherboard
ASUS Z390-I Gaming
CPU
i5-9600K
Graphics
RX 580
Mac
iMac, MacBook Pro
Mobile Phone
iOS
Why don’t you try taking the card out and do a fresh install using the IGPU? After that is set up and running put the card back in. Eliminate the card as a factor and see if it is something else in the configuration.
I have a SilverStone SST-RVZ03B case for my ASUS ITX Z270, and it is an incredible pain to assemble and disassemble. It's a tiny box into which I have stuffed a single fan water cooler, a 3/4 sized power supply and 3 SSDs. The cooling fan is mounted on the outside.

I started this with a ITX Radeon RX570 which didn't work - see prior postings from earlier in the month. I retracted that and put BACK the NVidia GTX 950 and rebooted with no problems. So I then bought this RX580 as it was deemed 100% compatible all over this Forum. Unpacked the case, stuffed in the RX580 and booted to this nightmare. As I've said a million times this works fine on the Windows 10 boot.

Now I've re-enabled the IGPU in the BIOS and am running the Windows on it. But it doesn't change the failure to boot to any OSX.

Before I rip this pain apart again, I would like to know why I can't boot to the USB High Sierra install stick. What is happening there?

I think now this is an ACPI problem of some nature. Someone out there must have a suggestion - before I tear it apart.

Is there a BIOS setting that I'm missing - is this the common point? Any yes I have followed all advice I can find on BIOS defaults. And I have varied all I can find in the BIOS with regard to Graphics option - the latest being booting on the IGPU.

I'm now thinking of replacing the computer case to something bigger uglier but easier to jig.

My weekend homework will be to build a new USB Install stick from scratch, test it on my GA-Z97X hack and see if I can boot it on this Z270X hack.

I'm fishing for ONE more suggestion before I follow your advice, which believe me, I had already considered.

WTF?
 
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