GNOME – How to control the start sequence
- export XDG_MENU_PREFIX=gnome- exec gnome-sesson.
- $ sudo dpkg-reconfigure gdm3.
- $ systemctl status systemd-logind.service.
- [Desktop Entry] Name=Ubuntu. Comment=This session logs you into Ubuntu. ...
- usr/share/gnome/autostart & ~/.config/autostart/
- gnome-shell the graphical shell.