You don't have to specify your default session every time you log in. gdm saves it outside the users home directory (in /var/lib/AccountsService/users/). At the worst, you have to choose a session the very first time you log in on a different machine.
You don't have to specify your default session every time you log in. gdm saves it outside the users home directory (in /var/lib/ AccountsService /users/ ). At the worst, you have to choose a session the very first time you log in on a different machine.