you mentioned
2. If the HDMI output is directly connected to your discrete graphics card, then this fix is NOT applicable for your laptop.
so on my xps 15 9570 i5 coffeelike it can't work right????
After a while I ran OS Mojave on my xps 15 here is the EFI
Specifications of my laptop
Processor
Intel Core i5-8400H
Graphics adapter
Grafica Intel® UHD 630
Memory
8192 MB
______________________________________________________________________________________________
Working
Intel UHD 630...
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