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Latitude E5430: dark screen under Big Sur (OpenCore)


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CPU: i5-3340M Ivy Brigde (i have SSDT-PM)

GPU: HD4000, 1600x900 (1536MB VRAM detected)

RAM: 8GB DDR3L-1600 RAM (detected)

LAN NETWORK: BCM5722D (works fine)

WI-FI: BCM94313 (not working, i know)

AUDIO: IDT 92HD93 (Works fine)


I used EFI from topic "Dell Latitude E6230 with i5-3340M/i7-3540M, HD4000 and 1366x768 LCD - El Capitan/Sierra/High Sierra/Mojave/Catalina/Big Sur" - "OC_0.6.3_EFI_E6230_BigSur_#5.zip."

Almost everything work fine after change LAN NETWORK.


I have one issue: After booting and showing the logo Apple, progress bar goes fine when loading GPU kext and screen disappears. Desktop shows only on extended monitor by HDMI, otherwise backlight on laptop screen is on.

Laptop screen detected in Big Sur system, but i can't switch to it. When i switch i change the resolution on extended monitor.


My DSDT is not patched.


Where can i change in config.plist or DSDT.aml to work on Laptop Screen?


DSDT.7z Config.plist.zip

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The properties you inject for your iGPU are all correct



but you forgot to patch fbmem to reduce it to 8MB. Add the following property:

framebuffer-fbmem        00008000        DATA


See: https://osxlatitude.com/forums/topic/2945-guide-for-enabling-vga-dvi-dp-and-hdmi-in-intel-hd4000-gpu


And, of course, don't use the patched DSDT of a Latitude E6230 on your E5430.

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