Enable Root GUI Login Debian 8 (Jessie)

Steps

gdm3 daemon.conf

Edit: /etc/gdm3/daemon.conf In the [security] section add the following:

AllowRoot = true

pam.d/gdm-password

Edit: /etc/pam.d/gdm-password Comment out the following line:

#auth required pam_succeed_if.so user != root quiet_success

Reference

https://economictheoryblog.com/2015/11/08/how-to-enable-gui-root-login-in-debian-8/