Can't output native 2560*1600 60hz?

[atopos]

(02-07-2019 02:28 AM)ToastyX Wrote:  The first adapter won't work. Single-link DVI by specification only supports up to 165 MHz pixel clock. Anything beyond that is supposed to be dual-link. HDMI 1.4 is capable of going beyond 165 MHz pixel clock, but it's single-link, so you can't convert HDMI to dual-link DVI with a simple passive adapter. Some monitors can accept a single-link DVI signal beyond 165 MHz pixel clock, but that's not standard.

The second adapter might work. If it can do 3840x2160 @ 30 Hz, then it has the bandwidth to do 2560x1600 @ 60 Hz. The only question is whether it will pick up 2560x1600 without a custom resolution or EDID override.

Today I received the HDMI to displayport adapter that I had ordered some days ago.
Regrettably that doesn't work either at 2560*1600 60hz.

Looking at the specs on the box it states that it has the stdp2600 HDMI 1.4 chip so it should be able to work(?).

Any insights?

P.S Does the attached screenshot help at all?