I was settings up my new System76 laptop (my current Pop!_OS version is based on ubuntu 19.10), the default 1920x1680 resolution is too small for me in the display settings. So I want to make it bigger. There is a "Scale" settings below, and it only has 2 options: 100%, 200%
100% is too small for me, 200% is too big.
To enable other scales, open terminal run command:
$ gsettings set org.gnome.mutter experimental-features "['x11-randr-fractional-scaling']"
Then back to display settings, you will be able to see other scale values: 125%, 150% and 175%.
