HiDPI? Um, what? I've been running Wayland gnome-shell on Fedora since Fedora 25, on a Dell m3800 and now a Dell XPS 15, both with 4K internal displays. I ofte

HiDPI? Um, what? I've been running Wayland gnome-shell on Fedora since Fedora 25, on a Dell m3800 and now a Dell XPS 15, both with 4K internal displays. I often connect to external monitors or projectors, either 1080p or 4K. Wayland has better HiDPI support than X and has for a long time. In order to make X work in any reasonable way you need to configure X to render at 4K all the time on all outputs and downscale using xrandr on 1080p displays. X cannot handle different DPI settings.