altough LightDM solve the login problem, it's not solution, becouse the NIS user can not shutdown/reboot the computer from the gnome session.
so I switch back to gdm and try the nscd hint .. looks like this solve both problem for me! -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1882034 Title: cannot start X session with NIS account To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1882034/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs