Public bug reported: The problem was evident as en error message when trying run 'Language Support' (gnome-language-selector) after install. (This was the advised way to get the Atom spell-checker working).
Error described here: https://askubuntu.com/questions/1031319/language- support-in-18-04-not-working-org-freedesktop-policykiterror- failed/1127862#1127862 It occurred on a fresh install of Ubuntu 18.04 after installing xfce4. No PolicyKit Authentication Agent was installed - or at least not one that xfce seemed to recognise. I solved the problem by installing one: $ sudo apt install policykit-1-gnome That installed the package: /usr/lib/policykit-1-gnome/polkit-gnome- authentication-agent-1. It seemed to update the autostart list. Though there is such a thing as 'xfce-polkit' and 'xfce-polkit-git', I could not see them on my machine and Debian [reports][3], in it's account of the package policykit-1-gnome, that xfce still uses the gnome polkit agent: "This implementation was originally designed for GNOME 2, but most GNOME-based desktop environments, including GNOME 3, GNOME Flashback, and MATE, have their own built-in PolicyKit agents and no longer use this one. The remaining users of this implementation are Cinnamon, XFCE and Unity." (https://packages.debian.org/sid/policykit-1-gnome) It is worth noting that the terminal emulator that comes default in Ubuntu and is still default after installing xfce (gnome terminal) would not run polkit-gnome-authentication-agent-1 after install. I understand it may have been necessary, perhaps ironically, to run it an an xterm. I didn't attempt this. But all was well after restart. ** Affects: dbus (Ubuntu) Importance: Undecided Status: New ** Tags: 18.04 agent authentication gnome polkit polkit-gnome-authentication-agent-1 ubuntu xfce4 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1821364 Title: xfce4 install on Ubuntu 18.04 has no polkit agent To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/dbus/+bug/1821364/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
