Thanks Timo and Reinhard for the help, I think I figured this one out. I've got a branch with a fix.
** Package changed: lightdm (Ubuntu Quantal) => unity-greeter (Ubuntu Quantal) ** Changed in: unity-greeter (Ubuntu Quantal) Status: Triaged => In Progress ** Changed in: unity-greeter (Ubuntu Quantal) Assignee: Robert Ancell (robert-ancell) => Michael Terry (mterry) ** Also affects: unity-greeter Importance: Undecided Status: New -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to unity-greeter in Ubuntu. https://bugs.launchpad.net/bugs/1044251 Title: Unable to login - Password input box does not appear Status in Unity Greeter: New Status in “unity-greeter” package in Ubuntu: In Progress Status in “unity-greeter” source package in Quantal: In Progress Bug description: This is in a NIS/Kerberos environment with shared users in a lab. /home is on NFS. I have configured lightdm to disable the list of users with these entries in /etc/lightdm/lightdm.conf: [SeatDefaults] greeter-session=unity-greeter allow-guest=false greeter-hide-users=true greeter-show-manual-login=true The symptoms are actually quite similar to bug #986967, but happen again in quantal. I can enter my user name, but the password box won't appear. ProblemType: Bug DistroRelease: Ubuntu 12.10 Package: lightdm 1.3.3-0ubuntu1 ProcVersionSignature: Ubuntu 3.5.0-13.14-generic 3.5.3 Uname: Linux 3.5.0-13-generic x86_64 ApportVersion: 2.5.1-0ubuntu4 Architecture: amd64 Date: Fri Aug 31 10:02:29 2012 ExecutablePath: /usr/lib/lightdm/lightdm-greeter-session InterpreterPath: /bin/dash ProcEnviron: PATH=(custom, no user) SHELL=/bin/false LANG=C.UTF-8 LANGUAGE=C.UTF-8 LC_MESSAGES=C.UTF-8 SourcePackage: lightdm UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/unity-greeter/+bug/1044251/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp