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Latitude E7470, OpenCore Big Sur not working


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Hello,

I've installed Big Sur on my Latitude E7470 using OpenCore. The only issue is that the brightness controls don't work. Unfortunately, also outputting to an external monitor blanks out my Laptop screen. I've tried applying USB fixes and it's still not working. I've made my own config.plist and OpenCore Installation and also tried your installation files for Big Sur and the same things aren't working. Is there a fix anyone else has been able to find.

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As posted in my guide, it's a known issue and there's a workaround. Just put system to sleep and then wake it up.

Brightness control with Fn+F11 and Fn+F12 should work with my files but make sure it's using VoodooPS2Controller. With ApplePS2Controller, it doesn't work.

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