I am using old cards 7870xt, and 7970 to an HDMI 2.0 TV.
I purchased both the club3d displayport 1.2 and 1.4 adapter to hdmi 2.0.
They both work as far as getting an image, but it’s outputting 16-235, i have no option to change it to 0-255, and there’s no pixel format option in my radeon adrenaline driver. I’ve tried older drivers such as the older Catalyst driver, Same issue, Not outputting 0-255.
At first I couldn’t even get it to run 3840×2160 @ 60hz, but There was a CRU thread which fixed that by adding a CEA value, So I was wondering if some other setting in CRU is possible to rectify this.
The TV does not have any settings for that, only HDMI 1.4 and HDMI 2.0.
I know for a fact the TV will accept 0-255, because it works via HDMI direct, but then I can’t get 60hz because it’s HDMI 1.4 on the GPU.