Public bug reported: No clue, sessions stopped working after a reboot following an update, with lots of errors that I guess are those reported now. After login I got black screen with a white mouse and nothing else. Sometimes errors ("Cancel" "Report bug") windows without decoration...
It started working again after I updated, dist-upgrades installed lxde and chose it as a session. Bad breakin completely X sessions, I had no way to get network access or research/report the errors ProblemType: Package DistroRelease: Ubuntu 13.10 Package: gdm 3.8.4-0ubuntu2 ProcVersionSignature: Ubuntu 3.8.0-32.47-generic 3.8.13.10 Uname: Linux 3.8.0-32-generic x86_64 ApportVersion: 2.12.5-0ubuntu2.1 AptOrdering: gnome: Purge gnome-core: Purge gdm: Purge Architecture: amd64 Date: Sat Nov 16 16:53:07 2013 DuplicateSignature: package:gdm:3.8.4-0ubuntu2:subprocess installed post-removal script returned error exit status 128 ErrorMessage: subprocess installed post-removal script returned error exit status 128 InstallationDate: Installed on 2013-07-23 (117 days ago) InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Release amd64 (20130424) MarkForUpload: True SourcePackage: gdm Title: package gdm 3.8.4-0ubuntu2 failed to install/upgrade: subprocess installed post-removal script returned error exit status 128 UpgradeStatus: Upgraded to saucy on 2013-10-29 (18 days ago) ** Affects: gdm (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-package saucy -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1251986 Title: package gdm 3.8.4-0ubuntu2 failed to install/upgrade: subprocess installed post-removal script returned error exit status 128 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gdm/+bug/1251986/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs