Unfortunately that didn't work. I went back to the versions that 16.10 originally shipped with and its still broken. I'm guessing some data file that gets generated got corrupted and its causing this but I'm unable to find it. I've taken an strace of lightdm-gtk-greeter showing the failure to help track this down
** Attachment added: "lightdm-gtk-greeter.strace" https://bugs.launchpad.net/lightdm/+bug/1662244/+attachment/4822818/+files/lightdm-gtk-greeter.strace ** Also affects: lightdm-gtk-greeter Importance: Undecided Status: New -- 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/1662244 Title: lightdm causes all greeters to fail to start Status in Light Display Manager: Invalid Status in LightDM GTK+ Greeter: Invalid Status in lightdm package in Ubuntu: New Status in unity-greeter package in Ubuntu: New Bug description: lightdm is failing to start. Best guess is because of unity-session- manager. This is from .xsession-errors. dbus-update-activation-environment: setting _=/usr/bin/dbus-update-activation-environment upstart: click-user-hooks main process (4028) terminated with status 1 upstart: unity-settings-daemon main process ended, respawning upstart: unity-settings-daemon main process ended, respawning upstart: unity-settings-daemon main process ended, respawning upstart: unity-settings-daemon main process ended, respawning upstart: unity-settings-daemon main process ended, respawning upstart: unity-settings-daemon main process ended, respawning upstart: unity-settings-daemon main process ended, respawning upstart: unity-settings-daemon main process ended, respawning upstart: unity-settings-daemon main process ended, respawning upstart: unity-settings-daemon main process ended, respawning upstart: unity-settings-daemon respawning too fast, stopped upstart: indicator-application main process ended, respawning upstart: indicator-application main process ended, respawning upstart: indicator-application respawning too fast, stopped xbrlapi: window 0x03a00084 changed to NULL name xbrlapi: window 0x03a00084 changed to NULL name xbrlapi: window 0x03c00084 changed to NULL name xbrlapi: window 0x03c00084 changed to NULL name xbrlapi: window 0x04000084 changed to NULL name xbrlapi: window 0x04000084 changed to NULL name xbrlapi: window 0x04000084 changed to NULL name xbrlapi: window 0x04000084 changed to NULL name xbrlapi: window 0x04000084 changed to NULL name xbrlapi: window 0x04000084 changed to NULL name xbrlapi: window 0x04000084 changed to NULL name xbrlapi: window 0x04000084 changed to NULL name xbrlapi: window 0x04000084 changed to NULL name xbrlapi: window 0x04000084 changed to NULL name xbrlapi: window 0x04000084 changed to NULL name xbrlapi: window 0x04000084 changed to NULL name upstart: dbus main process (4023) killed by TERM signal I've tried to move aside $HOME/.config/dconf/user and that didn't work. I've reverted kernel versions and that didn't work. I've moved aside $HOME/.cache and that didn't work. ProblemType: Bug DistroRelease: Ubuntu 16.10 Package: lightdm 1.19.5-0ubuntu1 ProcVersionSignature: Ubuntu 4.8.0-30.32-generic 4.8.6 Uname: Linux 4.8.0-30-generic x86_64 NonfreeKernelModules: zfs zunicode zcommon znvpair zavl ApportVersion: 2.20.3-0ubuntu8.2 Architecture: amd64 Date: Mon Feb 6 10:21:29 2017 InstallationDate: Installed on 2015-07-20 (566 days ago) InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422) SourcePackage: lightdm UpgradeStatus: Upgraded to yakkety on 2016-12-14 (53 days ago) To manage notifications about this bug go to: https://bugs.launchpad.net/lightdm/+bug/1662244/+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
