You can work around this by having a second AMD PCIe card in your system, or if using a motherboard with integrated graphics, set it to display first. The primary graphics device will handle the boot portion, and allow the system to boot perfectly with full graphics acceleration.
I've benchmarked and confirmed it's working with full acceleration. Chimera doesn't have 7xxx GraphicsEnabler code- that's why you see the "7xxx" while using GraphicsEnabler=Yes. And the fact that there are no official Macs with 7xxx means that the drivers are injecting default values.
I've benchmarked and confirmed it's working with full acceleration. Chimera doesn't have 7xxx GraphicsEnabler code- that's why you see the "7xxx" while using GraphicsEnabler=Yes. And the fact that there are no official Macs with 7xxx means that the drivers are injecting default values.