This also happened to me on 3 fresh installs and upgrades from 13.10 combined, both on hardware and VMs. Exact behaviour. Works fine until apt-get upgrade is run for the first time. It disables auto-login if configured and then hangs as soon as the password is entered, staying on the lightdm screen, but blanking out all the password fields. The main menu is still accessible as I can access power functions, and changing VT also works find. All installs tested using Unity, not tested under Gnome or LXDE.
On the hardware install, I was able to fix it by reinserting the DVD and choosing to reinstall the OS, however oddly when running in VirtualBox there was no option to reinstall, just to reformat and start from scratch. Also it does show 13.10 on the lightdm greeter rather than 14.04 until the issue is fixed. Once it's fixed, it shows 14.04. Very strange. WORKAROUND: I worked around this by using the following IMMEDIATELY after a clean install: sudo apt-get update sudo apt-get install ubuntu-desktop lightdm libgtk-pixbuf2.0-dev gdk-pixbuf-query-loaders | sudo tee /usr/lib/x86_64-linux-gnu/gdk-pixbuf-2.0/2.10.0/loaders.cache sudo apt-get upgrade Now reboot. This is tested working in the VMs and on hardware machines (not that there SHOULD be a difference) -- 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/1283826 Title: lightdm hangs after updates Status in GDM: The Gnome Display Manager: New Status in Light Display Manager: New Status in “lightdm” package in Ubuntu: Confirmed Bug description: I've updated today my Trusy Thar installation. I can't login to Unity, with my account, or a guest account. Lightdm hangs after password input, or after I click on the Guest account. Also, I used to auto-login. Now it greets me with the screen where I must input my password. After inputing it, lightdm hangs and I can't login. ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: lightdm 1.9.8-0ubuntu1 ProcVersionSignature: Ubuntu 3.13.0-12.32-generic 3.13.4 Uname: Linux 3.13.0-12-generic x86_64 NonfreeKernelModules: nvidia ApportVersion: 2.13.2-0ubuntu5 Architecture: amd64 Date: Sun Feb 23 23:16:24 2014 InstallationDate: Installed on 2014-01-25 (29 days ago) InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Alpha amd64+mac (20140115) LightdmConfig: [SeatDefaults] autologin-guest=false autologin-user=cristi autologin-user-timeout=0 autologin-session=lightdm-autologin SourcePackage: lightdm UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/gdm/+bug/1283826/+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
