Hi,
I have 7400 model with custom EFI built for 7400 and weirdly I can't establish fullhd res (1080p) on the external monitor, it is going blank. Is fine when 720 is set instead.
I've swapped DP connectors to HDMI in the framebuffer, have full accel. but 720 res is working only without problem unfortunately ...no 1080p.
Any advice on where to look? EFI folder with config, essential kexts and amls attached.
Thanks
EFI.zip