May  4 15:13:34 dello lightdm: pam_succeed_if(lightdm:auth): requirement "user ingroup nopasswdlogin" not met by user "zingalo"
May  4 15:13:36 dello lightdm: pam_unix(lightdm:auth): authentication failure; logname= uid=0 euid=0 tty= ruser= rhost=  user=zingalo
May  4 15:13:36 dello lightdm: pam_unix(lightdm-autologin:session): session closed for user lightdm
May  4 15:13:36 dello lightdm: pam_unix(lightdm:session): session opened for user zingalo by (uid=0)
May  4 15:13:36 dello lightdm: pam_ck_connector(lightdm:session): nox11 mode, ignoring PAM_TTY :0
May  4 15:13:37 dello lightdm: pam_unix(lightdm-autologin:session): session opened for user lightdm by (uid=0)
May  4 15:13:37 dello lightdm: pam_ck_connector(lightdm-autologin:session): nox11 mode, ignoring PAM_TTY :0
May  4 15:13:37 dello dbus[889]: [system] Rejected send message, 2 matched rules; type="method_call", sender=":1.82" (uid=104 pid=2425 comm="/usr/lib/indicator-datetime/indicator-datetime-ser") interface="org.freedesktop.DBus.Properties" $
May  4 15:13:40 dello lightdm: pam_nologin(lightdm:auth): cannot determine username
May  4 15:13:40 dello lightdm: pam_succeed_if(lightdm:auth): requirement "user ingroup nopasswdlogin" not met by user "zingalo"
May  4 15:13:40 dello lightdm: pam_unix(lightdm:auth): conversation failed