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Accidentally screwed flatpak up through override commands, how do I fix? (sh.itjust.works)

submitted 1 month ago* (last edited 1 month ago) by [email protected] to c/[email protected]

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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.

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[–] [email protected] 2 points 1 month ago (1 children)

It's likely because it can't access X11 or Wayland. To fix this, try editing the files in /home/your_username/.local/share/flatpak/overrides/ like I mentioned earlier. Specifically, look for the sockets line and make sure it includes wayland, x11, and x11-fallback like sockets=wayland;x11;x11-fallback;. This should help you launch flatpaks that need X11 access.

[–] [email protected] 3 points 1 month ago (1 children)

Alright I took a look, and all I see are text files of only a few of the apps, nothing else is present as far as I'm seeing right now, and in them there's only a single command of text, all of them are different. Is that normal?

[–] [email protected] 1 points 1 month ago* (last edited 1 month ago) (1 children)

Yes, they are different because they are for different flatpak applications.

What's in the files? Do they have a line called sockets? Is that line set to x11 or x11-fallback? Have you tried adding those options like sockets=wayland;x11;x11-fallback? I usually get an error saying I can't connect to the display or that X is missing when I revoke access to x11 or wayland. Or did you remove x11 from your system?

[–] [email protected] 1 points 1 month ago* (last edited 1 month ago)

Like I said there's literally nothing in the text files but a single line of text, each application only has one and it's different for each. Some have filesystems=host-etc;host-os, some have something else, and again there's only a few applications here, not everything, and the selection is also very random, some of these are applications I haven't used in a while, really weird.

Tried that yeah, didn't do anything at all. X11 is definitely installed, I checked, and all the flatpaks only ran in x11 mode before all of this regardless of what settings I changed through flatseal or command line, so no idea what's going on then. Did I bork flatpak somehow?

EDIT: okay I think I'm just gonna use timeshift, get everything working-ish again, back up whatever I can over a few days, and either install a whole new distro or install a new version of Kubuntu and not tweak anything anymore, I think the things really screwed up after that broken install ordeal, no idea what's going on.

Do you know if it's possible to install a new version of Kubuntu via a live USB without wiping everything, including important data, out? If not, what's the second best option? Can I drag and drop some folders to perserve my applications and their data and stuff? Is there a tool for all of that? Let me know! Would be appreciated!