I get caught in this loop now and then. It happens to my laptop when I have a set of Logitech USB headphones and a second display hooked up via HDMI. If I remove those, it boots normally.
This time I discovered it happened to both lightdm and gdm. Up to today, I thought it was lightdm related. -- 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/1249407 Title: package lightdm 1.8.4-0ubuntu1 failed to install/upgrade: subprocess installed post-removal script returned error exit status 1 Status in “lightdm” package in Ubuntu: New Bug description: The power supply on my CPU went bad. when I replaced it and first booted, everything looked fine, and I would get the login screen. In a few minutes the screen would go blank. If I quickly logged in, the same thing would happen. After a few minutes the screen would go blank. This is likely unrelated to my power supply. I apt-get --purge remove lightdm and then reinstalled it. When I logged in, I got "System program problem detected." It complained about apport and then went through this debug process. ProblemType: Package DistroRelease: Ubuntu 13.10 Package: lightdm 1.8.4-0ubuntu1 ProcVersionSignature: Ubuntu 3.11.0-13.20-generic 3.11.6 Uname: Linux 3.11.0-13-generic x86_64 NonfreeKernelModules: nvidia ApportVersion: 2.12.5-0ubuntu2.1 AptOrdering: ubuntu-desktop: Purge lightdm-remote-session-uccsconfigure: Purge lightdm: Purge lightdm-remote-session-freerdp: Purge Architecture: amd64 Date: Fri Nov 8 10:51:50 2013 DuplicateSignature: package:lightdm:1.8.4-0ubuntu1:subprocess installed post-removal script returned error exit status 1 ErrorMessage: subprocess installed post-removal script returned error exit status 1 InstallationDate: Installed on 2012-11-07 (365 days ago) InstallationMedia: Ubuntu-Server 12.10 "Quantal Quetzal" - Release amd64 (20121017.2) LightdmConfig: [SeatDefaults] user-session=ubuntu greeter-session=unity-greeter MarkForUpload: True SourcePackage: lightdm Title: package lightdm 1.8.4-0ubuntu1 failed to install/upgrade: subprocess installed post-removal script returned error exit status 1 UpgradeStatus: Upgraded to saucy on 2013-10-23 (15 days ago) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/lightdm/+bug/1249407/+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
