Suddenly had an issue with refused rights.
Had to add myself as user to the group dbus: sudo gpasswd -a paul dbus
Clear Arch-wiki section about managing groups:
Display group membership with the groups command:
$ groups [user]
If user is omitted, the current user's group names are displayed.
To list all groups on the system:
$ cat /etc/groupsource: https://wiki.archlinux.org/index.php/Groups
Manage group membership
Add users to a group with the gpasswd command:
# gpasswd -a [user] [group]
To remove users from a group:
# gpasswd -d [user] [group]
If the user is currently logged in, he/she must log out and in again for the change to have effect.