Hallo,
ein Starten mit pkexec bringt folgendes:
pkexec lightdm-gtk-greeter-settings
==== AUTHENTICATING FOR com.ubuntu.pkexec.lightdm-gtk-greeter-settings ====
Authentication is required to run Settings editor for LightDM GTK+ Greeter
Authenticating as: tore
Password:
polkit-agent-helper-1: error response to PolicyKit daemon: GDBus.Error:org.freedesktop.PolicyKit1.Error.Failed: No session for cookie
==== AUTHENTICATION FAILED ====
Error executing command as another user: Not authorized
This incident has been reported.