Switching from iGPU to dGPU (Radeon RX 5500m)

I'm currently grappling with a challenge while attempting to switch from my laptop's iGPU to the dGPU i.e., Radeon RX 5500m. Unfortunately, my laptop lacks a mux switch, so I'm trying to direct the display through the HDMI port. I've disabled the iGPU using the following boot flags: -wegnoigpu -wegswitchgpu agdpmod=pikera, and I've also installed the WhateverGreen kext.

However, I'm running into the following error:

[18.313728]: [9:0:0] AMD Error: The IOPCIDevice VRAM Memory Descriptor is NULL! [18.313769]: [9:0:0] AMDRadeonX6000_AmdRadeonControllerNavi14::start() !!! Could NOT Create Controller Core Services. [18.313772]: [9:0:0] AMDRadeonX6000_AmdRadeonControllerNavi14::start() !!! BIOS parser is NULL 

I would greatly appreciate any insights or guidance from the community on tackling this issue. If anyone has experience with a similar setup or has suggestions to share, please lend a hand.

Laptop Specs:

• Model: HP Victus 16-e0162AX
• CPU: Ryzen 5600H
• GPU: Radeon RX 5500m

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