I found out that lightdm-gtk-greeter works, after I had a second look into lightdm.conf. (comment #2)
It is actually unity-greeter (0.1.1-0ubuntu1) that fails. Instead of showing the greeter, there is blank screen and hard disk indicator led blinks actively. The keyboard is unresponsive for a while: you cannot enter tty1, caps lock indicator led is not turned on, but then after about 10 seconds from pressing the keyboard the HD led is turned off and the keyboard starts to work normally. Probably this is a subject of another bug report. The greeter can be changed in /etc/lightdm/lightdm.conf. I simply commented the unity-greeter. Reinstalling nvidia-173 or nvidia-common did not help. -- 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/854431 Title: GDM automatic login is not transitioned to lightdm automatic login Status in “lightdm” package in Ubuntu: Triaged Status in “lightdm” source package in Oneiric: Triaged Bug description: lightdm: 0.9.7-0ubuntu1 I did an upgrade from natty to oneiric using 'do-release-upgrade -d'. Natty was configured for automatic login and included a custom.conf. After the upgrade I'm brought to a lightdm login screen. The automatic login configuration was not copied into lightdm. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/lightdm/+bug/854431/+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

