$ cat /etc/lightdm/lightdm.conf
[SeatDefaults]
user-session=ubuntu
greeter-session=unity-greeter
greeter-show-manual-login=true
allow-guest=false
My computer is hooked up to an Active Directory domain via Likewise-Open, and I have no problems logging in with my AD username. If I logout to return to the login screen, then I see my username in the list alongside the local admin user. If I reboot the computer, then I see that my AD username has disappeared from the users list on the login screen, and only the local admin user account is shown.
ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: lightdm 1.2.1-0ubuntu1.1
ProcVersionSignature: Ubuntu 3.2.0-32.51-generic 3.2.30
Uname: Linux 3.2.0-32-generic x86_64
ApportVersion: 2.0.1-0ubuntu13
Architecture: amd64
Date: Fri Oct 19 11:20:53 2012
InstallationMedia: Ubuntu 12.04.1 LTS "Precise Pangolin" - Release amd64 (20120823.1)
ProcEnviron:
LANGUAGE=en_AU:en
PATH=(custom, user)
LANG=en_AU.UTF-8
SHELL=/bin/bash
SourcePackage: lightdm
UpgradeStatus: No upgrade log present (probably fresh install)
Status changed to 'Confirmed' because the bug affects multiple users.