Hi. I just got a new screen and it dosen't show a image when fully booted in macOS (bios screen works) The screen is a 3440x1440p 100hz. When using DisplayportIt works 100% (inkluding booting) but not with Hdmi :/ (I need DP to boot on my other computer) I use a R9 270x for my gpu and asus b85-m motherboard. It works with 1080p screens, but not with ultrawide 1440p. I allso tried booting from the motherboard's hdmi and that works but it will only give me 720p resolution. The hdmi i tried worked on my macbook pro.
Can a displayport to hdmi 1.4a resolve this issue. ( I tryed a DP to hdmi 1.3 that did not help) The screen does suport up to hdmi 1.4a max
Issue #2 When im booting up for the first time the screen i black and the computer dont respond, so i have to hit the resett switch to get it to post. (it´s every boot i do and worked before)
My EFI https://www.dropbox.com/s/00fxaeyl88w7ym2/config.plist?dl=0
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