I had to fix the ID numbers for the card (added the proper vendor:device ID) in the AMD5000Controller.kext and AMDRadeonX3000.kext and had to use the SwitchResX application to correct the constant display colour switching (between blue and green).Īnyway, when I decided it was time to upgrade to Mojave 10.14.6 I knew it would be a hassle to go through the same pain of making this card compatible on the new installation. The card was AMD HD 6770 1GB (even though the system identified it as Radeon HD 5000 series), given to me by my son when he bought a better one for his gaming rig. I was using a nice but old AMD graphics card and it was working fine -almost, because it reported wrong ID- up until Sierra 10.12.6.
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