Cannot back up automatically

Hello, I am trying to activate automatic backup, but I get the message “Your desktop session does not support automatically starting Flatpack apps”. Has anyone encountered this problem before?

Linux Mint 21.3 Cinnamon (Fresh Install)
Déjà Dup Backups 45.2 (Flatpak)


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I think the problem is xdg-desktop-portal-xapp is very barebones and does not implement the background portal. Looks like very many other portals are missing too. I’m afraid that project likely needs a lot of work; you’ll probably encounter compatibility problems in many other applications too. Sorry for the bad news.

(If somebody is interested in contributing to Linux Mint or Cinnamon, this would likely be a good place to start.)

I opened a ticket about this missing portal: Add a Background portal implementation · Issue #2 · linuxmint/xdg-desktop-portal-xapp · GitHub

You can follow along there, but I don’t know how high priority is is for the Mint folks.

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Thank you for your answers

I actually notice strange things when flatpak applications automatically start. For rebuilding my system, and whenever possible, I try to install my tools via Flatpak only. The first one I try to configure, like everyone does ;-), is deja-dup. But, after your comments, I think I will reconsider my plan.

Thanks for the ticket