I have been working through Dortania's OpenCore Install Guide and I have been able to get Big Sur installed on my Latitude 7400. Everything seems to work ok, but I have two graphics related issues that I can't seem to figure out.
The main issue is that my display is showing up as external monitor, rather than the LCD panel that it is on. The other issue is that About My Mac only shows 7mb for my graphics card (Intel UHD Graphics 620).
I've attached my config.plist file. Any help or pointers to go look at would be greatly appreciated.