Public bug reported: Maybe something goes bad during some updates. If I want to use lightdm, I needed to fallback to lightdm-gtk-greeter instead of unity-greeter.
Here is my config files: $ find /etc/lightdm/ /etc/lightdm/ /etc/lightdm/lightdm.conf.d /etc/lightdm/lightdm.conf.d/50-greeter-wrapper.conf /etc/lightdm/lightdm.conf.d/50-xserver-command.conf /etc/lightdm/lightdm.conf.d/50-unity-greeter.conf /etc/lightdm/users.conf /etc/lightdm/lightdm-gtk-greeter-ubuntu.conf /etc/lightdm/lightdm-gtk-greeter.conf >From the log I can read in /var/log/lightdm/x-0-greeter.log: Failed to register client: GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown: The name org.gnome.SessionManager was not provided by any .service files [..] [+0,21s] WARNING: Failed to open configuration file: Aucun fichier ou dossier de ce type [+0,21s] WARNING: Failed to open sessions directory: Erreur à l'ouverture du répertoire « /usr/share/lightdm/sessions » : Aucun fichier ou dossier de ce type [..] [+0,22s] DEBUG: unity-greeter.vala:506: Showing greeter [+0,22s] DEBUG: unity-greeter.vala:194: Showing main window (gnome-settings-daemon:1902): Gdk-WARNING **: gnome-settings-daemon: Fatal IO error 11 (Ressource temporairement non disponible) on X server :0. [END] Wheras in /var/log/lightdm/x-0.log: (EE) Server terminated successfully (0). Closing log file. [END] $ dpkg -l | awk '{print $2}' | egrep -i "(lightdm|greeter)" liblightdm-gobject-1-0 lightdm lightdm-gtk-greeter lightdm-remote-session-freerdp lightdm-remote-session-uccsconfigure unity-greeter ProblemType: Bug DistroRelease: Ubuntu 13.10 Package: unity-greeter 13.10.3-0ubuntu1 ProcVersionSignature: Ubuntu 3.11.0-8.15-generic 3.11.1 Uname: Linux 3.11.0-8-generic i686 ApportVersion: 2.12.5-0ubuntu2 Architecture: i386 Date: Sat Oct 19 09:26:22 2013 InstallationDate: Installed on 2013-07-01 (109 days ago) InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Alpha i386 (20130701) MarkForUpload: True ProcEnviron: TERM=xterm PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=fr_FR.UTF-8 SHELL=/bin/bash SourcePackage: unity-greeter UpgradeStatus: No upgrade log present (probably fresh install) ** Affects: unity-greeter (Ubuntu) Importance: Undecided Status: New ** Tags: apport-bug i386 saucy -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1241950 Title: Unity greeter show the cursor 0.2 seconds and end To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/unity-greeter/+bug/1241950/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs