motherboard because each manufacturer places 1-2-3 output ports on the iGPU.The iGPU installation depends on 2 factors: When this happens but we do not want to have the iGPU as the primary card, we must configure the iGPU as headless mode (it is called like that when it is active but without cable to the display) so that the dGPU shows the image but the integrated one is available for encoding / decoding video. When building a Hackintosh with both types of GPU we can find that, although the dGPU is much more powerful than the iGPU, if it is not properly installed and recognized by the system, the video encoding will fail. Macs with an integrated graphics card (iGPU) and a dedicated one (dGPU) use the integrated one for video encoding and decoding. Note: based on the excellent article ' General Framebuffer Patching Guide (HDMI Black Screen Problem)' by on the 'Framebuffer patch' functionality of Hackintool app and on the Desktop Coffee Lake Dortania's guide. How to set the integrated graphics card Intel UHD Graphics 630 Coffee Lake Refresh (9 generation) in headless mode (without cable) to be used in video encoding tasks, bringing the image to the monitor with Radeon RX 580, adding hardware video encoding and decoding to the system, or as main card. Building a CustoMac Hackintosh: Buyer's Guide

Intelr uhd graphics 630