Lightdm is the 'default' package, but your issue cant be reproduced with gdm on a fresh installation; so possibly some borked settings/profile/old symlinks on your system.
** Changed in: powermgmt-base (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to powermgmt-base in Ubuntu. https://bugs.launchpad.net/bugs/1165364 Title: Power Manager doesn't terminate while login Status in powermgmt-base package in Ubuntu: Incomplete Bug description: While login into GDM, I get the below message window (French) : ------------------- Un programme est toujours en cours d'exécution (translation : a program is still running) -- Power Manager -- Absence de réponse (tr : no reply) ---- vérrouiller l'écran / annuler / se déconnecter (tr : lock screen / cancel / logout) ------------------- If I click on "se déconnecter" (tr : logout) or wait a few seconds, I login into my user environment. If I click on "annuler" (tr : cancel), the screen is frozen (except the mouse). I need use a virtual terminal (CTRL-ALT-F1) in order to properly reboot my computer. ProblemType: Bug DistroRelease: Ubuntu 10.04 Package: powermgmt-base 1.31 ProcVersionSignature: Ubuntu 2.6.32-46.105-generic 2.6.32.60+drm33.26 Uname: Linux 2.6.32-46-generic x86_64 Architecture: amd64 Date: Sat Apr 6 12:39:18 2013 ProcEnviron: LANGUAGE=fr_FR:fr:en_GB:en PATH=(custom, no user) LANG=fr_FR.utf8 SHELL=/bin/bash SourcePackage: powermgmt-base To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/powermgmt-base/+bug/1165364/+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