Stuck at IOConsoleUsers: gIOScreenLockState following successful installation, iGPU config issue?

[V3-571G]

I installed Catalina to my laptop with the USB recovery installer. I am using OpenCore 0.5.9. I made it as far as reaching the desktop for the first time after running through the initial profile creation. My integrated graphics were functioning correctly with hardware acceleration enabled.

However, when I rebooted the laptop I ended up getting stuck here, followed by a kernel panic:

Unsupported CPU
Unsupported PCH
apfs_keybag_init:1583: failed to initialize volume keybag, err = 2
apfs_keybag_init:1583: failed to initialize volume keybag, err = 2
apfs_keybag_init:1583: failed to initialize volume keybag, err = 2
IOConsoleUsers: time(0) 0->0, lin 0, llk 1,
IOConsoleUsers: gIOScreenLockState 3, hs 0, bs 0, now 0, sm 0x0

From some extensive research I found that stalling at IOConsoleUsers: gIOScreenLockState is typically related to a iGPU issue. I have checked my values in config.plist but I can't see anything incorrect.

Can anyone offer some insight into this problem, please? I have attached my config with PlatformInfo removed.

I am using MacBookPro11,4 SMBIOS.

Laptop Specification:

CPU: Haswell Intel Core i7-4720HQ @ 3.6GHz
iGPU: Intel HD 4600 [Mobile]
dGPU: NVIDIA GeForce GTX 970M 3GB
Memory: 12GB DDR3 1600MHz
Storage: 1TB Crucial MX500 SATA SSD
Audio: Realtek ALC892
Trackpad: Synaptics PS/2
Ethernet: Realtek RTL8411B

 

[V3-571G]

I tried adding the -igfxvesa boot argument in order to disable integrated graphics and hardware acceleration, but even that didn't work, it still sticks on startup at the same point. So I'm thinking maybe the issue is related to something else?

 

[V3-571G]

Well I managed to solve the initial problem by adding this to the DeviceProperties:

framebuffer-stolenmem | Data | 00003001

But now I'm getting this kernel panic immediately afterwards:

assertmsg@/Library/Caches/com.apple.xbs/Sources/GPUDriversIntel/GPUDriversIntel-14.7.8/IONDRV/HSW/AppleIntelFramebuffer/AppleIntelController.cpp:17234

I have copied the framebuffer values from RehabMan's HD4600 laptop config.

This is what I have in DeviceProperties: