How to set screen resolution to 1280x800 (16:10)

Which system do you use? Android, Ubuntu, OOWOW or others?

Ubuntu 22.04 gnome fenix 1.5.1

Which version of system do you use? Khadas official images, self built images, or others?

Khadas official images.

Please describe your issue below:

I have a Waveshare 10.1DP-CAPLCD monitor with a hardware resolution of 1280 x 800.
But this resolution is not among those available in the display properties. I tried to do the same as in the post, and I managed to add the desired resolution to the list of available ones, but when selected, the screen went blank.