Can Linux finally allow HDR on my trashcan?

Been playing with 6.19 and it’s Vulkan support for my D700s which has been going decently. I remember reading that one of the new features enables by 6.19 for early GCN cards was HDR. I can see the option in Fedora, but when I enable it, it’s just all washed out.

I never got HDR working in Windows or MacOS so I always assumed it was a hardware thing, but not sure if anyone else had luck. Im using a mini-DP To HDMI adapter and the monitor is 4K.