cp /usr/lib/systemd/system/getty@.service /usr/lib/systemd/system/autologin@.serviceupdate file: [/usr/lib/systemd/system/autologin@.service]
add in the line ExecStart= -a USERNAMe after --noclear
example:
ExecStart=-/sbin/agetty --noclear -a root %I 38400 linux systemctl disable getty@tty1
systemctl enable autologin@tty1
systemctl start autologin@tty1