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Surface Book 2: UHD 620 Graphic Acceleration/Framebuffer Issue


Hack.intosh

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Forget about con1 and con2, these would typically be for eternal displays. You'll probably have to experiment with type and flags of con0; for instance, you may simply try to set con0 to DP/mDP

framebuffer-con0-enable    1           NUMBER
framebuffer-con0-type      00040000    DATA

 

Do you have any BIOS option to set DVMT at all?

Did you try to boot without fbmem + stolenmem patches?

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@Hervé

 

I've finally have managed to get full GA working with 0x05001C59 and external monitor using type-c to HDMI port. However, Built-in display is blank - I am still able to change brightness with fn keys and sys info show the builtin display is detecting resolution at 28" (1600x1200). Still not having any luck with the connector type...

 

15" Surface Book 2 15” PixelSense™ Display
Screen: 15” PixelSense™ Display
Resolution: 3240 x 2160, (260 PPI)
10 point multi-touch G5
Aspect ratio: 3:2
Contrast ratio: 1600:1

 

SB15 04.ioregopencore-2022-11-01-021006.txt.zip

Screen Shot 2022-11-01 at 1.25.21 pm.png

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