[jordanab]

How did you manage to get different scaling to work, if I may ask? That's the only thing I haven't been able to get properly working myself. I have a similar laptop screen, and 3 external 4k monitors. I would love to be able to scale my laptop screen differently as well :)

[neverminder]

No special tweaks, everything out of the box using Gnome's Settings app. Initially I didn't expect that to work, because of earlier reports I kept seeing, but it did. In fact just now I set one of my external monitors to 100% while the other remained at 150% and it worked. The mouse cursor seemed a bit stuttery than usual on the 100% one, but maybe I was just imagining things.