If you have time, could you try starting from Ubuntu 17.10, then upgrade to 18.04 and see if you can reproduce the issue? You're welcome to use a virtual machine to make testing easier.
** Tags added: bionic -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to gnome-software in Ubuntu. https://bugs.launchpad.net/bugs/1756098 Title: Potential cache upgrade issue in 3.28 results in unable to install flatpakref due to remote already existing Status in gnome-software package in Ubuntu: New Bug description: What happened 1) Open your browser, navigate to flathub.org, find an app and click to install it 2) Open the resulting flatpakref in gnome-software. 3) Notice how the app info is correctly displayed 4) Try to click install, notice how now you get "cannot install source from https://dl.flathub.org/repo/: flatpak source flathub already exists" Note that I have 3.27.92 installed first and then upgraded to 3.28. After removing all installed apps and remotes I have not been able to reproduce the issue. It has been suggested that it is an issue in cache cleanup between versions - probably within ~/.cache/gnome- software/flatpak/ Furthermore note the actual issue was likely fixed in 3.28, so this is upgrades from lower than 3.28 to 3.28 which will be affected by cache upgrade issues. I have reported the bug upstream here https://gitlab.gnome.org/GNOME /gnome-software/issues/328 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-software/+bug/1756098/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
