This bug is mean, I was lucky that the option "Automatic Login" was enabled, otherwise I wouldn't be able to login again as typing the password did nothing, I don't know if it's possible to login as root through the login screen, but I was able to do so through the su command once logged in (automatically). Afterwards 'passwd' solve the problem.
-- You received this bug notification because you are a member of Desktop Packages, which is subscribed to gnome-control-center in Ubuntu. https://bugs.launchpad.net/bugs/993217 Title: Log in without password option breaks the authentication right of the specific user Status in “gnome-control-center” package in Ubuntu: Confirmed Bug description: >>lsb_release -rd Description: Ubuntu 12.04 LTS Release: 12.04 >>apt-cache policy gnome-control-center gnome-control-center: Installed: 1:3.4.1-0ubuntu1 Candidate: 1:3.4.1-0ubuntu1 Version table: *** 1:3.4.1-0ubuntu1 0 500 http://ftp.ntua.gr/pub/linux/ubuntu/ precise/main amd64 Packages 100 /var/lib/dpkg/status >>What you expected to happen Changing my own user profile to not require a password on log in, should completely remove the existing password.. >>What happened instead I have changed my own user profile to not require a password and log me in automatically. What happened is, once I'm logged in, I find my password is not accepted when I'm trying to install an application or make changes to user accounts. This bug is also mentioned in this question of askubuntu: http://askubuntu.com/questions/128213/admin-password-authenticates-to- log-in-but-not-to-install-apps-or-change-user-a/ I've proposed there a solution, which worked for me, but I believe that it is important to report this question as bug to launchpad. ProblemType: Bug DistroRelease: Ubuntu 12.04 Package: gnome-control-center 1:3.4.1-0ubuntu1 ProcVersionSignature: Ubuntu 3.2.0-24.37-generic 3.2.14 Uname: Linux 3.2.0-24-generic x86_64 ApportVersion: 2.0.1-0ubuntu7 Architecture: amd64 Date: Wed May 2 14:46:12 2012 ExecutablePath: /usr/bin/gnome-control-center InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64 (20120425) SourcePackage: gnome-control-center UpgradeStatus: No upgrade log present (probably fresh install) XsessionErrors: (compiz:2352): GConf-CRITICAL **: gconf_client_add_dir: assertion `gconf_valid_key (dirname, NULL)' failed (gnome-settings-daemon:2335): power-plugin-WARNING **: was instructed to play a sound loop with one already playing usr_lib_gnome-control-center: activity-log-manager-control-center 0.9.4-0ubuntu3 deja-dup 22.0-0ubuntu2 gnome-bluetooth 3.2.2-0ubuntu5 indicator-datetime 0.3.94-0ubuntu2 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-control-center/+bug/993217/+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
