The Gnome Desktop Manager is the responsible application to ask for login authentication and gets call gnome session after login.
How to setup automatic system login
The following settings produces that systems goes into the user session after boot process.
To get this working just add the following lines under `daemon` section in /etc/gdm/custom.conf file
[daemon] AutomaticLoginEnable=True AutomaticLogin=user1
How to login with no password
- Add the following entry to /etc/gdm/custom.conf file to ensure the user name appears in login chooser
[greeter] Include=user1, user2
- Add the following line next to the line
auth required pam_env.soin /etc/pam.d/gdm file
auth sufficient pam_listfile.so item=user sense=allow file=/etc/gdm/users.txt onerr=fail