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macOS Sierr/High Sierra ATi AMD HD 6570 glitching screen at boot installer


Yee
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Hello

I have trouble installing new system Sierra 10.12.6 and High Sierra 10.13.1 on my old legacy machine (old 775 socket without UEFI):

 

Gigabyte GA-G33-m DS2R

HIS HD 6570 1GB

Xeon E5430 (mod from 771 to 775)

disk GPT parted

 

To this time my graphic card work flawless with old MACOS X version like Yosemite or ElCaptain.

I never need injection, patch or kext to get full working resolution and acceleration.

Now i can not install new system (installer patched against legacy/mbr installation) - after booting with -v option my hardware is recognized, no hangs or kernel panic, but when installer want switch to GUI i got black-gliching screen with semi black&white snow.

AFAIK my graphic card is supported by Sierra/HighSierra (0x6759) - i tried many options with lilu.kext/WhatEverGreen.kext as well, without success.

No matter what my monitor (HP w2216) always ended witch gliching screen.

 

Any suggestion?

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You should not have problem in Sierra but for HS you need to replace 4 kexts.

For Sierra I may propose you to exclude lilu/we and take Clover 4296 with new option RadeonDeInit=YES. Inject->ATI=NO

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Thank You for help.

After install Sierra 10.12.6 with my build-in card intel 3100 (VGA mode) and removed ATI card I switched to new Clover and put back ATI card.

Clover 4297  with RadeonDeInit=Yes solved only partially my problem - now i can watch whole boot proces messages, GUI starts without gliches, but dark (blank)

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  • 2 weeks later...

You should not have problem in Sierra but for HS you need to replace 4 kexts.

For Sierra I may propose you to exclude lilu/we and take Clover 4296 with new option RadeonDeInit=YES. Inject->ATI=NO

Will work this method with Radeon RX 560?

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