Linux causal here.

Long story short: I’ve been trying to fiddle with scaling on Kubuntu 24.04 after fixing a broken install, all the flatpak apps suddenly got stuck on x11 mode and refused to use anything else and wouldn’t scale at all, tried following some guides online and everything got screwed up, nothing will launch anymore.

I used sudo flatpak override --system followed by some other stuff, no idea if that was a major mistake or not but that’s what the search results recommended.

Tried reinstalling flatpak, tried reinstalling an app to see if that fixed anything (it didn’t), tried to reverse the overrides through other commands (didn’t do anything), took a peek at some folders to see if I could delete some configs or something and reset flatpaks settings (couldn’t find anything), and a bunch of other stuff, literally nothing works man, no idea what’s going on… System apps launch fine, deb apps too, so the system is fine I think, scaling on system apps works, but flatpak and it’s apps is completely screwed, won’t scale, and now just won’t launch whatsoever, help?

EDIT: tried the flatpak repair command, also tried to run an app through the command line to see what’s wrong exactly, it gave me a bunch of numbers with Missing X server or $DISPLAY and The platform failed to initialize. Exiting. at the end.