<< Solved >> How to disable Radeon 6800 XT????

[swizzley]

Running a Big Sur Open Boot build with windows on a second drive. Recently replaced my Nvidia 1070 card with a Radeon 6800XT and looks like I need to disable it somehow because OSXI just hangs on load screen. I'm running the Designiare Golden Build apart from this, and I thought the Nvidia card was disabled at the PCI_E slot, but I guess that's not the case since it wont boot with it plugged in. I'm able to just unplug the power to the 6800 and boot normally using the Mac grfx card: radeon 470. Did I screw myself here getting an AMD card or can 1 be disabled and not the other?

 

[swizzley]

UPDATE: Unplugged RX 6800XT, upgraded to Big Sur 11.2.2. Plugged back in and I'm all good again. But actual fix turned out to be setting the BIOS to initial GPU slot 3 for the RX470.