Half the battle is after installation:
sudo apt install xdg-desktop-portal-dde
The error message does not pop up and you can change the settings, but...
Changing the settings doesn't change anything. The application does not start at startup as I indicated and turns off the effects when closed.
Flatpaks take over a minute to start!!
I had to uninstall xdg-desktop-portal-dde and the original error about lack of permissions appears, but the flatpaks start normally.
The best compromise for me is the solution from
Is there any solution with these portals ?
Hi, Howto solve ?
flatpak permission-reset com.github.wwmm.easyeffects
This command doesn’t change anything. This message still appears.
In terminal
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