xubuntu-desktop metapackapge on my system and after this action
unity-greeter no longer appears. I've purged
lightdm twice, then reinstalled
unity-greeter. But still no result. Copying all files from
/etc/lightdm/lightdm.conf.d/ returned my Unity greeter but it works incorrectly, for example it asks for my password each time when locking the screen. I've rechecked this option in system settings many times, but it doesn't respond. How to get
lightdm and Unity greeter back without reinstall of the system?