[Unit] Description=Light Display Manager Documentation=man:lightdm(1) After=systemd-user-sessions.service [Service] # temporary safety check until all DMs are converted to correct # display-manager.service symlink handling ExecStartPre=/bin/sh -c '[ "$(cat /etc/X11/default-display-manager 2>/dev/null)" = "/usr/sbin/lightdm" ]' ExecStart=/usr/sbin/lightdm Restart=always BusName=org.freedesktop.DisplayManager