How can I enable autologin on lubuntu 14.10? I tried various method like this LXDE Auto Login but they don't work.
According to the Lubuntu Wiki https://help.ubuntu.com/community/Lubuntu/Boot_Install_Login#For_release_12.04_and_on_.28LightDM.29
For release 12.04 and on (LightDM)
You will need to create an /etc/lightdm/lightdm.conf with these contents: (do this as root)
[SeatDefaults] autologin-user=<YOUR USER> autologin-user-timeout=0 user-session=Lubuntu greeter-session=lightdm-gtk-greeter
It appears that what you have tried and say does not work is similar but not the same as this solution.