Quad Display Split in HP Laptop

[MatinDevs]

I managed to install macOS Sequoia on my HP EliteBook 1050 G1 with an i7-8750H and UHD 630.

I was able to get a display by enabling VESA mode and completing the installation that way. Then I tried removing the flag and performing the necessary OpenCore configurations; however, the screen would freeze after displaying a large number of logs in verbose mode. After a bit of research and trial and error, I injected my dumped EDID into the config. The next boot would display the screen, and I can verify that iGPU acceleration is working; however, it appears to be split into four portions, as shown in the picture.

 

I've tried these yet, with no success; It either freezes in boot, or the same quad-display issue.

• Enabling/Disabling CSM
• Trying to manually set resolution in macOS using 3rd Party apps
• Removing and adding device-id property (my GPU is supported and it's not needed)
• Trying various platform-ids (nothing seems to be changed)
• Dumping EDID from MonInfo on Windows, Intel Command Center, and also from Linux Mint, and crafting my own EDID again using edidcraft.com and AW EDID Editor
• Trying numerous boot-args (including igfx... and more)
• Changing SMBIOS (Macmini, MBP15,2)
• Clearing NVRAM using both tools, O,penCore allowed, for each change
• Verifying that the EDID is indeed being injected
• Trying to manipulate BusIDs

 

Things that I haven't tried:

• Enabling dGPU (GTX 1080 with Max-Q Design)
• Connecting an external monitor (Laptop ports are wired to dGPU, which is disabled)
• Playing with ACPIs and Kexts (I found nothing related to my issue)

 

I'll attach my latest EFI folder. I think now, with this amount of research I've done and achieved yet no success, maybe maintainers can help with this problem. However, any help is extremely appreaciated!

 

EFI.zip

[Slice]

It looks like the problem I resolved in Clover several years ago

        <key>Graphics</key>
        <dict>
            <key>DualLink</key>
            <integer>0</integer>

Or 1.

[MatinDevs]

Just now, Slice said:

It looks like the problem I resolved in Clover several years ago

        <key>Graphics</key>
        <dict>
            <key>DualLink</key>
            <integer>0</integer>

Or 1.

Does it have any alternative in OpenCore?

[deeveedee]

@MatinDevs I haven't used that property, but it should be a graphics DeviceProperty that you can inject with Open Core config.plist > DeviceProperties or an SSDT.