My laptop has a 4k monitor, while my external monitor is HD. This results in either my laptop screen being way to small, or my external being to big. Unfortunately I can't scale the monitors separately. When I put the scale for the first monitor on 100%, the other will go to 100% as well. I have also tried to edit the monitors.xml file manually, but the result was the same.
The resolution of my laptop monitor has 1 option, while my external monitor has several (but is already set on the highest resolution).
Any help would be welcome.
Running on: Ubuntu 18.04.3 LTS