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Dell XPS 15 9500 (i7-10875H): Big Sur with OpenCore


djuby
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Hi Jake Lo,

 

I am using SSDT-dGPU-Off.aml to disable the discrete graphics. Not sure if it works correct. Is there a way to check?

I have added SSDT-PNLFCFL.aml to the ACPI folder and in the config.plist - still no brightness control. Now in System Preferences->Build-in Display the picture has changed from that of a monitor to a laptop. I guess this is a good sign. Attaching current EFI ...

 

 

EFI.zip

 

... and the IOReg.

 

 

UserIOReg.ioreg.zip

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Some progress. Using the SSDT-NoHybGfx.aml that Jake Lo provided, enabled brightness control (slider) in System properties. Brightness keys still not working. I guess it's a good sign that the discrete GPU was finally disabled.

 

I have changed the igpu patch too, as suggested by Lorys89.

 

Is there anything in the BIOS that I can change to help resolve the sleep/wake up issue?

 

Attaching current EFI ...

 

EFI.zip

... and IOReg.

 

UserIOReg.ioreg.zip

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