If you have an account which is not showing in the greeter using Ubuntu 14.10 with the updated packages please provide the following information on the user:
$ gdbus call --system --dest org.freedesktop.Accounts --object-path /org/freedesktop/Accounts/User1000 --method org.freedesktop.DBus.Properties.GetAll org.freedesktop.Accounts.User
(replace 1000 with the UID)
LightDM shouldn't hide any users so hopefully one of the user properties should indicate why it isn't being shown.
If you have an account which is not showing in the greeter using Ubuntu 14.10 with the updated packages please provide the following information on the user: .Accounts --object-path /org/freedeskto p/Accounts/ User1000 --method org.freedesktop .DBus.Propertie s.GetAll org.freedesktop .Accounts. User
$ gdbus call --system --dest org.freedesktop
(replace 1000 with the UID)
LightDM shouldn't hide any users so hopefully one of the user properties should indicate why it isn't being shown.