/etc/lightdm/lightdm.conf.d/10-ubuntustudio.conf is provided by the ubuntustudio-default-settings package. However, I don't see any inidication that this file ever contained manual login configuration. Did you edit it yourself?
** Package changed: lightdm (Ubuntu) => ubuntustudio-default-settings (Ubuntu) -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to lightdm in Ubuntu. https://bugs.launchpad.net/bugs/1364036 Title: Manual login disappeared after update of lightdm / greeter Status in “ubuntustudio-default-settings” package in Ubuntu: Incomplete Bug description: Manual login screen stopped appearing, apparently after update to lightdm-gtk-greeter. Instead of requiring a password as per usual, the system logged-in automatically. This is a security risk to anybody for whom it is vital that password log-in is maintained at all times. The update to lightdm-gtk-greeter occured on 26 August. I have attached logs to show subsequent refs to lightdm. A fix was provided here: http://askubuntu.com/questions/451950/how-to- configure-lightdm-to-allow-manual-logins-in-ubuntu-14-04 It seems the update removed the line from /etc/lightdm/lightdm.conf.d/10-ubuntustudio.conf that governs whether manual login runs or not. Is this sort of oversight a common failure for updates related to user security? How are we to trust it is not? ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: lightdm 1.10.1-0ubuntu1 ProcVersionSignature: Ubuntu 3.13.0-35.62-generic 3.13.11.6 Uname: Linux 3.13.0-35-generic x86_64 ApportVersion: 2.14.1-0ubuntu3.3 Architecture: amd64 CurrentDesktop: XFCE Date: Mon Sep 1 14:46:56 2014 EcryptfsInUse: Yes SourcePackage: lightdm UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubuntustudio-default-settings/+bug/1364036/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp