The primary difference between the original
config.plist and the one I modified is the use of WhateverGreen to set iGPU to headless platform ID 0x3E980003. This is, in effect, Pro Apps Option 2.
There are always various experiments to try (one by one) such as:
- Add agdpmod=pikera to boot arguments.
- Disable the AMDSupport kernel patches.
- Disable WhateverGreen by adding boot argument -wegoff
- Remove SSDT-Z390-DESIGNARE-RX580-V2.aml from CLOVER/ACPI/patched. (This should be done anyway.)
- Uncheck InjectIntel from Clover Configurator --> Graphics and attempt Pro Apps Option 2 again.
- Update to latest Lilu, WhateverGreen, and AppleALC.
- Update to latest Clover.
It's strongly advisable to have a full bootable backup made before starting these experiments.