Sorry but still i does not work: after boot it continues to ask me user/pwd.
This is how the 2 lines appear now:
autologin-user=root
autologin-user-timeout=0
What I have noted is that under section
[Seat:*]
there are another 2 similar lines:
#autologin-user=
#autologin-user-timeout=0
Maybe should I modify these 2 also?