I have just installed SLE 15 Server in mode TEXT, when Linux stars default tty1 for login, I can not enter with any user ( root or instalation user). Always shows an error "login incorrect. What’s happen? Is there default user for tty1?. thank you very much.
Hi and welcome to the Forum 
No, it’s either ‘root’ or the user name you created, sure no caps or num lock on during install and it’s now off?