jaymonkey
Moderator
- Joined
- Aug 27, 2011
- Messages
- 4,080
- Motherboard
- GB Z490 Vision D
- CPU
- i9-10850K OC @ 5.2 GHz
- Graphics
- RX6800-XT+UHD630
- Mac
- Mobile Phone
With this config, on apple loading screen, in the middle of the loading I get blackscreen for 1 second and the come back with a correct resolution, finish the loading and open Mojave without problem. But I was looking for a perfect boot without this second of black screen.
@Maesito,
Thats pretty normal .... when you first boot up your system the BIOS, Clover and the initial loading of MacOS all use the VESA drivers built in to the VBIOS of the GPU. About half way through loading MacOS the native GPU drivers are loaded. The black screen your seeing is caused by the initialisation of the drivers and the system switching from a VESA mode to a Native Driver Mode.
Depending upon the type of GPU and the amount of VRAM it has this black screen can be anywhere from a few seconds to almost instant. For example on my desktop system which has a AMD Vega 64 the black screen delay is about 3 seconds, on my laptop that has a HD 620 IGPU its around 1 second.
If the native drivers fail to completely initialise or are incorrectly configured then the black screen persists, with a IGPU this is ether due to the system using the wrong framebuffer/driver, or that the defined connectors in the selected framebuffer miss-match the physical display connectors on the motherboard which is the issue specifically addressed by the guide at the start of this thread.
Cheers
Jay
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