Thank you for your response - I already suspected as much. In that case: Which display manager would be recommended? I'm not at all fanatic about any kind of DM, I'm also quite open to using a different Linux distribution - the only thing I'd really like to stay with is a Debian- or Ubuntu foundation. Cinnamon and Mate seem to be both on the no-go-list, same applies so Ubuntu with gnome, so I am under the impression, that the options are quite limited, so is there a positive example of this working in an unattended setup?