sapphire 7950 reference is not use DVI Slot??

[andk16]

Hi guys.

first, introduce my system

xeon1230v2
ga-z77-d3h (etc.)
with clover bootloader

I have 7950 reference from sapphire.

but a graphic card work only hdmi, not work dvi. (not tested dp) displyed 'about this mac' = 7xxx

so I tried ati inject with all 7xxx framebuffer. but when checked ati inject, monitor is blackscreen even hdmi monitor.

what is problem?? I want use dvi port. please, I need your help.

 

[Acden]

My card works both DVI and DisplayPort on Mojave.