@Gigamaxx,
@tedyun, I already tried that after we talked about it last night... didn't work.
The 5500's device-id is listed for "ATY,DeviceID" on GFX0 while "device-id" is "<"@s">." Bizarre, but that confirms that I'm on the right path.
I found the debug logs for Lilu & WEG and I think I may have found the issue on the WEG log:
"WhateverGreen unfair: @ (DBG) disabling unfair gva due to missing boot argument"
This is bizarre considering that "...weg: @ (DBG) agdpmod using config pikera" appears in the log long before that error occurs. Is there another boot-arg I'm missing for WEG? Note: there's no errors in the Lilu debug log.
Another interesting item: System Information lists that my 6900 XT supports metal when it didn't prior to this endeavor. I attached before & after screenshots.