It will default to an Xorg (X11) session if certain conditions are met; i.e., hybrid laptop graphics.
See /usr/lib/udev/rules.d/61-gdm.rules
See also:
It will default to an Xorg (X11) session if certain conditions are met; i.e., hybrid laptop graphics.
See /usr/lib/udev/rules.d/61-gdm.rules
See also: