I'm seeing the same thing in Xubuntu 14.04: pkexec works in text mode, but not GUI mode. If I run it with the --disable-internal-agent flag, it raises "Error executing command as another user: No authentication agent found." polkitd is running, as is polkit-gnome-authentication-agent-1.
This is a fresh install. This wasn't a problem in Xubuntu 12.10. I have installed some gnome-related packages in order to compile various programs. "Policykit Authentication Agent" in Session & Startup in the settings is enabled. -- 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/ubuntu/+source/policykit-1/+bug/976638/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs