Dell XPS 15 - applications don't scale in Ubuntu 18.04
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I'm currently stuck with the scaling of my external monitor. This is my setup: Dell XPS 15 9570, 4k display, nVidia Geforce 1050Ti, running ubuntu 18.04. nouveau disabled 1x external monitor connected via HDMI (I tried one monitor with 1920x1080 and one with 3440x1440 resolution) My problem is that a change of the scaling has only an influence on the side panel. Not a single desktop icon, application, application title bar scales at all when I change it. This are the things I tried while running both monitors (internal and external) or only the external one ( xrandr --output $INTERNAL_DISPLAY --off ): Change resolution in Setting -> Devices -> Screen Display: This changes the scale of the side bar and the side bar icons exactly like I want them but nothing else changes. Chang...