I still have this problem. The workaround mentioned above does not always work reliably; sometimes. However, restarting dbus when gdm is stopped always works; although it also prints an asyncronous error- message:
# /etc/init.d/gdm stop ; sleep 2 ; /etc/init.d/dbus st op ; sleep 2 ; /etc/init.d/dbus start ; sleep 2 ; /etc/init.d/gdm start * Stopping GNOME Display Manager... [ OK ] * Stopping System Tools Backends system-tools-backends [ OK ] * Stopping Avahi mDNS/DNS-SD Daemon avahi-daemon [ OK ] * Stopping bluetooth [ OK ] * Stopping Hardware abstraction layer hald [ OK ] * Stopping system message bus dbus [ OK ] * Starting system message bus dbus [ OK ] * Starting Hardware abstraction layer hald [ OK ] * Starting bluetooth [ OK ] * Starting Avahi mDNS/DNS-SD Daemon avahi-daemon [ OK ] * Starting System Tools Backends system-tools-backends [ OK ] * Starting GNOME Display Manager... [ OK ] # X11 connection rejected because of wrong authentication. -- dbus does not start after reboot https://bugs.launchpad.net/bugs/521407 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs