Thank you for your bug report, could you add your /var/log/Xorg.0.log.old to the bug after getting the issue?
** Changed in: gnome-session (Ubuntu) Status: Confirmed => Incomplete -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to gnome-session in Ubuntu. https://bugs.launchpad.net/bugs/937347 Title: gnome-session restarts when I try to play videos Status in “gnome-session” package in Ubuntu: Incomplete Bug description: When I try to play some video in a player (tested in Totem and in VLC) the session is closed and go back to the Unity greeter. Follow the errors found in /var/log/syslog file: Feb 20 22:49:26 scd-notebook gnome-session[5595]: Gdk-WARNING: gnome-session: Fatal IO error 11 (Resource temporarily unavailable) on X server :0.#012 Feb 20 22:49:26 scd-notebook acpid: client 5425[0:0] has disconnected Feb 20 22:49:26 scd-notebook acpid: client connected from 6682[0:0] Feb 20 22:49:26 scd-notebook acpid: 1 client rule loaded ProblemType: Bug DistroRelease: Ubuntu 12.04 Package: gnome-session 3.2.1-0ubuntu5 ProcVersionSignature: Ubuntu 3.2.0-17.26-generic 3.2.6 Uname: Linux 3.2.0-17-generic x86_64 NonfreeKernelModules: fglrx ApportVersion: 1.92-0ubuntu1 Architecture: amd64 Date: Mon Feb 20 22:59:17 2012 InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Alpha amd64 (20120201.1) PackageArchitecture: all ProcEnviron: LANGUAGE=pt_BR: PATH=(custom, no user) LANG=pt_BR.UTF-8 SHELL=/bin/bash SourcePackage: gnome-session UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-session/+bug/937347/+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