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Hi @CaseySJ Got it (4K on Kaby Lake Intel HD Graphics 630) to work in the end by modding DVMT Pre-allocated Video Memory in BIOS to 64MB. Thanks for your help and hoping someone will find the below useful.

Any luck with this? I have the same problem

Hi, I have the same issue, have you been able to fix it?

I tried both in various combination with SwitsresX with no joy. Looks like HD 630 is such a difficult iGPU, If I didn't an Optiplex Micro form factor, I'd have bought a dGPU to make things easier Thanks.

Unfortunately none of these worked: 0x3E9B0007/0x3E9B + iMac14.2 0x3E9B0007/0x3E9B Without stolenMem

Whaoo! Looks like we are almost there I added platform ID 0x3E9B0007 and device ID 0x3E9B, rebooted but got a kernel panic - see image and plist I tried the second time adding only the Platform ID 0x3E9B0007 (without adding the device ID 0x3E9B) and was able to successfully boot into 3840X2160...

Hi @CaseySJ Thanks for your reply, please see my responses below. (1) Yes I have tried both 18,2 and 18,3, both are unusable - flickers, artifacts and the screen unresponsiveness. (2) I am using DisplayPort, will not use the other connectors. (3) Computer monitor is the LG 27UK850-W. Full...

Help with 4k Resolution on Intel HD Graphics 630 I have followed every guide here and still cannot get 4K resolution with Optiplex 7050 micro with Intel HD 630, any help will be appreciated. I have attached my config.plist Thanks