Jul 07 09:28:32 Slave1 gnome-session[1850]: gnome-session[1850]: WARNING: Shutdown failed: GDBus.Error:org.freedesktop.DBus.Error.InteractiveAuthorizationRequired: Interactive authentication required.
This is probably because this is all mixed up:
c1 110 lightdm seat0 1 1000 townsend
That means lightdm has the "foreground" session, and your XDG_SESSION_ID is c1. And "your" session is a remote one "1".
Jul 07 09:28:32 Slave1 gnome-session[ 1850]: gnome-session[ 1850]: WARNING: Shutdown failed: GDBus.Error: org.freedesktop .DBus.Error. InteractiveAuth orizationRequir ed: Interactive authentication required.
This is probably because this is all mixed up:
c1 110 lightdm seat0
1 1000 townsend
That means lightdm has the "foreground" session, and your XDG_SESSION_ID is c1. And "your" session is a remote one "1".