Comment 1 for bug 1267054

BTW, I found this by inspecting /var/log/syslog. Just in case someone googles the error message:

Jan 8 10:55:29 ltsp gnome-session[31915]: WARNING: Session 'ubuntu' runnable check failed: Abbruch mit Code 1
Jan 8 10:55:29 ltsp gnome-session[31915]: WARNING: Unable to find default provider 'unity-2d-panel' of required provider 'panel'
Jan 8 10:55:29 ltsp gnome-session[31915]: WARNING: Unable to find default provider 'unity-2d-shell' of required provider 'shell'
Jan 8 10:55:30 ltsp gnome-session[32061]: WARNING: Session 'ubuntu' runnable check failed: Abbruch mit Code 1
Jan 8 10:55:30 ltsp gnome-session[32061]: WARNING: Unable to find default provider 'unity-2d-panel' of required provider 'panel'
Jan 8 10:55:30 ltsp gnome-session[32061]: WARNING: Unable to find default provider 'unity-2d-shell' of required provider 'shell'