lightdm doesn't ask for password if you clear users password and then recreate it

[Alistair Buxton]

Steps to reproduce:

1. do a default install of ubuntu 12.10
2. log in (note that you need to enter your password
3. open User Accounts
4. click "password"
5. set action to "Log in without a password" - NOT "auto login" which does something different.
6. ok the dialog, log out, restart computer.

This action clears the user's password. Their password is now effectively null.

7. When you reach the greeter once again, you have to click on "login" but you will not be asked for a password.

At this point it is not possible to give yourself a password again due to another bug.
https://bugs.launchpad.net/ubuntu/+source/gnome-control-center/+bug/1070449
So we work around it:

8. open a terminal and "passwd"
9. Note it doesn't ask for your existing password, because there isn't one. Enter a new password.
10. restart the computer once more.

When you reach the greeter you can login without entering the password you just set.

ProblemType: Bug
DistroRelease: Ubuntu 12.10
Package: lightdm 1.4.0-0ubuntu2
ProcVersionSignature: Ubuntu 3.5.0-21.32-generic 3.5.7.1
Uname: Linux 3.5.0-21-generic i686
ApportVersion: 2.6.1-0ubuntu9
Architecture: i386
Date: Thu Jan 17 22:21:33 2013
InstallationDate: Installed on 2013-01-17 (0 days ago)
InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Release i386 (20121017.2)
MarkForUpload: True
SourcePackage: lightdm
UpgradeStatus: No upgrade log present (probably fresh install)

[Robert Ancell (robert-ancell)]

12.10 is end of life.