I have a 2017 Kaby Lake MacBook Pro with Iris Plus Graphics 640. Will CAC-2504 let me output 4K HDR to a television?
I often see people say that DP 1.2 doesn’t support HDR. Where is this information coming from?
Based on the Intel white paper for Kaby Lake, it seems that Kaby Lake supports HDR through both DP and HDMI 2.0 w/ LSPCON. As far as I know, Kaby Lake does not support DP above 1.2.
A user on the Intel forum e-mailed VESA about this and received the following response: https://community.intel.com/t5/Graphics/No-HDR-on-Intel-UHD-620-with-Kaby-Lake/td-p/551520?profile.language=de&attachment-id=16921
The VESA representative had personally done HDR through DP 1.2 with Intel graphics.
In my personal experience, my Dell U2720Q has displayed an HDR signal when connected with DP Alt Mode 1.2 to my MacBook. I have successfully used it to watch HDR YouTube videos and local content.
Has anyone tested the combination of 2017 MacBook Pro with CAC-2504 before? Or if you feel that there are any problems with the conclusions that I’ve drawn above, I would appreciate it if you would let me know.