6900XT unable to shift into graphics mode, monitor output drops and restarts, blank

[ripdog]

Hi all,

I'm trying to install Ventura on this hardware:

 

• [CPU][AMD Ryzen 5 5600 3.5 GHz 6-Core Processor]
• [Motherboard][MSI B450 GAMING PRO CARBON MAX WIFI ATX AM4 Motherboard]
• [Memory][G.Skill Ripjaws V 16 GB (2 x 8 GB) DDR4-3600 CL16 Memory]
• [Memory][G.Skill Ripjaws V 32 GB (2 x 16 GB) DDR4-3600 CL16 Memory]
• [Storage][Crucial P3 Plus 2 TB M.2-2280 PCIe 4.0 X4 NVME Solid State Drive]
• [Video Card][Asus TUF GAMING OC Radeon RX 6900 XT 16 GB Video Card]

(Note the GPU is not the XTX variant, so shouldn't require spoofing)

My config.plist: https://pastebin.com/aDp8WFgy

My EFI: https://mega.nz/file/YUtCxbCQ#2L0xAZui8quXrj-_PWcuyLTtmXoDCisRDGhsPkscfnc

File listing of my EFI: https://pastebin.com/RPXsRjzy

My command line: `-v keepsyms=1 debug=0x100 agdpmod=pikera`

I've followed dortania's guide as closely as possible.

After selecting the installer from the OpenCore menu, I receive the macos log spam for ~15 seconds, then the screen goes blank briefly before my monitor reports the signal has disappeared. After ~10 seconds, the signal briefly returns, just long enough to stop my monitor turning off, but it's blank and the monitor immediately reports signal loss again.

Any idea? Thanks in advance.