[Trisquel-users] Re : Starting T7 GNOME Shell

[lcerf]

It must be Xorg.  I actually use GDM as a display manager.  However I used to  
use LightDM (or was it on Trisquel 6?).  I switched to GDM to:

get a "lock screen" button in the menu;
get notification on that lock screen (configurable from "Brightness & Lock"  
in the "System Settings").


Anyway.  Try GDM.