i think it's a bug with graphic driver nvidia/ati..., i had this problem after a security update of this driver. i removed this driver, reboot my pc and i could login. after that i installed my graphic driver again
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1628790 Title: Changing the user settings to autologin on Lubuntu 16.04 causes LightDM to get stuck in a login loop To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/lightdm/+bug/1628790/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
