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Dual Displays (not mirrored) on Intel UHD Graphics 630

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I have managed to get an OC 0.6.5 build installed and running, but have an issue with the iGPU.


I made a github repo and an issue here that I will track my progress and collect info from various forums:



Here is the commit that shows the changes i needed to get it booting with OC 0.6.5 (the original repo that i forked from hung halfway through the apple loading bar):




So the situation is like this:

I can boot and Catalina runs great - mostly.

But some apps eg PathFinder and NovaBench crash immediately with this:


Application Specific Information:
Assertion failed: (0), function CreateCompiler, file /Library/Caches/com.apple.xbs/Sources/GPUDriversIntel/GPUDriversIntel-14.7.11/GLRenderer/kbl/usc_interface.cpp, line 1676.


I am able to avoid these crashes via a fake device-id as suggested in this thread, but then i only have one adapter output and can only use mirroring for the two displays.


Any help out there?

Does this actually deserve a bug report / issue for WhateverGreen ?


My build description is here:



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