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4k display wakup dGPU

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I am having the exact same problem, running 10.15.7 on my Hack #1. Since I upgraded to Catalina, every now and then my 4k display connected to the dGPU will fail to wakeup.

If I edit my OC config.plist to add the suggested CFG,CFG_USE_AGDC, I boot to a black screen, that eventually turns into something like this:



The pointer (visible in the top left corner) is working, but that's otherwise completely unusable. That's with OC 0.6.4

Is there anything else that can be tried to address this issue?




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