I just started having this problem today (wasn't a problem for me previously), and it seems to be related to this bug.
I cannot load Unity, Gnome, Gnome Classic, or the recovery console from the lightdm-greeter login screen. Logging in as guest works. Using gdm instead of lightdm works. /var/log/lightdm/lightdm.log reports the session as exiting with a return value of 1. Running the lightdm-session command manually reports multiple errors about a blank display name. ** Attachment added: "lightdm-session.log" https://bugs.launchpad.net/ubuntu/+source/lightdm/+bug/944736/+attachment/3188767/+files/lightdm-session.log -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to lightdm in Ubuntu. https://bugs.launchpad.net/bugs/944736 Title: Fails to load any session Status in “lightdm” package in Ubuntu: Fix Released Bug description: With lightdm 1.1.4-0ubuntu1 make it to the greeter, then fails to load any session, tried ubuntu, unity-2d, gnome-shell. (1st attempt of g-s failed, after removing & re-installing per comment 15 'some' things cleared up Just get the 'corrupted' screen that is currently common with a lot of hardware, nvidia in particular Downgrading to lightdm (1.1.3-0ubuntu1) & all is well. (fully upgraded as of 7AM NY ProblemType: Bug DistroRelease: Ubuntu 12.04 Package: lightdm 1.1.4-0ubuntu1 ProcVersionSignature: Ubuntu 3.2.0-17.27-generic-pae 3.2.6 Uname: Linux 3.2.0-17-generic-pae i686 NonfreeKernelModules: nvidia ApportVersion: 1.93-0ubuntu2 Architecture: i386 Date: Fri Mar 2 06:51:12 2012 InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Alpha i386 (20120220) ProcEnviron: TERM=xterm PATH=(custom, user) LANG=en_US.UTF-8 SHELL=/bin/bash SourcePackage: lightdm UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/lightdm/+bug/944736/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
