Max resolution is 2560x1440 instead of 4k (UHD630)

[RKurt1]

Hi there,

I just bought a new PC (components are listed below) and connected it to my Samsung U28D590 (28" 3840x2160) using DP1.2 but the maximum resolution I can set is 2560x1440.

The latest drivers for all components are installed and I also tried different cables (all DP) but it won't let me change the resolution to the screen's native resolution.

Intel i5 8400

AsRock Z370M-ITX/ac

16 GB DDR4 @2666

Samsung SSD 960 EVO 250GB M.2

I'm looking forward to your replies.

raikur

[idata]

Hello, raikur.

Thank you very much for contacting the Intel® Communities Team.I understand you are having some problems with the resolution of your SAMSUNG* display which is not allowing you to go further than 2560x1440. Allow me to help you regarding this issue you are facing.In order to help you better, I would like to gather more information about the configuration you have on the computer. Please attach to this thread the TXT file the Intel® System Support Utility will generate: https://downloadcenter.intel.com/download/25293/Intel-System-Support-Utility https://downloadcenter.intel.com/download/25293/Intel-System-Support-UtilityTo attach a file, you must click the "Attach" option on the bottom right-hand corner of the response box.Then, I would like to have an Intel® Graphics Report. In order to attach this report please follow the steps listed in this link: https://www.intel.com/content/www/us/en/support/articles/000005848/graphics-drivers.html https://www.intel.com/content/www/us/en/support/articles/000005848/graphics-drivers.htmlPlease make sure that when you run the report your computer is connected to your SAMSUNG* display.Antony S.

[RKurt1]

Hey Antony,

thanks for your quick reply.

After testing some other displays I am sure that this Samsung display is broken somehow.

I tested with a few other Samsung displays of that model and all others are working fine.

This thread can be closed as my problem is solved now.

Thank you anyway for your help!

raikur