Hi Alba,
Thanks for coming back to me.
I have two DisplayPort cables, a full size DP to DP, and a full size DP to miniDP. I tried both.
See the attached images that show how this is connected. This shows the method of connection and the resolution/refresh as reported by the monitor. You can also see the monitor is on DP1.2 mode.
Since my previous post I did some more testing.
I bought a Thunderbolt to DP adaptor, and it works at 4k60hz (obviously on the same monitor/computer), which is odd based of you saying the EDID is wrong.
Thanks
Richard
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