Found the answer - I needed to install lxsession-edit, and that gives me the "Policykit Authentication Agent" tickbox. Now all is well.
One oddity though: on a fresh install of Lubuntu 18.04, everything works as expected - yet the Policykit Authentication Agent box is unchecked... Can anyone explain? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/976638 Title: pkexec does not find any authentication agent To manage notifications about this bug go to: https://bugs.launchpad.net/policykit-1/+bug/976638/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
