I bought some POS dummy DP port and am failing miserably at trying to set my monitors native resolution through CRU.
Native Monitor Resolution 3840x1600@60Hz
Current running resolution 3840x1620@17Hz
I have tried a few things, and most of the time the graphics driver crashes and windows restarts.
In CRU
- set the timings with automatic(PC) and automatic(HDTV)
- set the timings manually derived from the link at (tomverbeure github io / video_timings_calculator)
- plug my monitor in and copy the resolution profile to the dummy plug
- remove all resolutions and set the one specific resolution i want
When trying to set the resolution in the AMD driver Custom Resolution page I get the message
“the custom resolution settings are not compatible with this display. reconfigure your settings and try again”
I’m at a loss as to where the issue is. I suspect the dummy DP plug does not support fast enough pixel clock, but i’m not sure how to check that.
A side note, there are resolutions showing in windows that are not specified on the dummy plug, I cannot work out where they are coming from.
AMD driver version is: 21.4.1