I am running Ubuntu 16.04.2 LTS on an iMac. I am the administrator of six users, and none of them can login with a password. Only the administrators with
sudo privs can use a password. When you try to change the password through Settings > Users and Groups, it successfully changes the password, but when you log out and try to log in again, it doesn't ask for a password and just logs in when you click the user name. This is also the case when I use the
passwd command through the terminal.
user@ubuntu-imac:~$ passwd Changing password for user. (current) UNIX password: Enter new UNIX password: Retype new UNIX password: passwd: password updated successfully
How do I fix this?