When the login screen appears, no matter which password I type, I am presented with the same login-screen again. On the second attempt, I am able to log in.
The first time, it does not complain about wrong passwords.. It displays the login-screen again either way. This happens both on 11.10 and 12.04 for me.
On 11.10, there was some garbage text on top of the login-screen the first time. This is gone on 12.04
On 12.04, the login sound (drums) is played once for each login.
Specifics about release:
uname -a:
Linux oivind-pc 3.2.0-24-generic #37-Ubuntu SMP Wed Apr 25 08:43:22 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux
lsb_release -rd
Description: Ubuntu 12.04 LTS
Release: 12.04
ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: lightdm 1.2.1-0ubuntu1
ProcVersionSignature: Ubuntu 3.2.0-24.37-generic 3.2.14
Uname: Linux 3.2.0-24-generic x86_64
NonfreeKernelModules: fglrx
ApportVersion: 2.0.1-0ubuntu7
Architecture: amd64
Date: Thu May 10 22:23:58 2012
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64 (20120425)
ProcEnviron:
LANGUAGE=en_US:en
TERM=xterm
PATH=(custom, no user)
LANG=en_US.UTF-8
SHELL=/bin/bash
SourcePackage: lightdm
UpgradeStatus: No upgrade log present (probably fresh install)
Thank you for your bug report, does it happen with any user? Could you boot, try to log in once, go to a vt (ctrl-alt-f1), log in there, and copy the .xsession-errors for the user account you tried to log into from lightdm as well as /var/log/