Hello Franceso! kdm is missing a systemd service file. I am not sure whether this is related to your problem, but you could add the attached kdm.service file and add it to /lib/systemd/system and see if that fixes your problem.
Cheers, Adrian -- .''`. John Paul Adrian Glaubitz : :' : Debian Developer - glaub...@debian.org `. `' Freie Universitaet Berlin - glaub...@physik.fu-berlin.de `- GPG: 62FF 8A75 84E0 2956 9546 0006 7426 3B37 F5B5 F913
[Unit] Description=KDE Display Manager Documentation=man:kdm(1) After=systemd-user-sessions.service [Service] ExecStartPre=/bin/sh -c '[ "$(cat /etc/X11/default-display-manager 2>/dev/null)" = "/usr/sbin/kdm" ]' ExecStart=/usr/sbin/kdm Restart=always BusName=org.freedesktop.DisplayManager
