Removing LightDM
For my Chromebook I don't need a login box, I can manage with a tty and auto start X after logging in.
I remove LightDM and then add this to the login script.
Add or edit .bash_profile
# # ~/.bash_profile # [[ -f ~/.bashrc ]] && . ~/.bashrc if [[ ! $DISPLAY && $XDG_VTNR -eq 1 ]]; then exec startxfce4 fi