ricardo@Blackgate:~$ more .xsession-errors
/etc/gdm/PreSession/Default: Registering your session with wtmp and utmp
/etc/gdm/PreSession/Default: running: /usr/X11R6/bin/sessreg -a -w /var/log/wtmp -u /var/run/utmp -x "/var/lib/gdm/:0.Xservers" -h "" -l ":0" "ricardo"
/etc/gdm/Xsession: Beginning session setup...
Failed to start message bus: Failed to read directory "/etc/dbus-1/${prefix}/share/dbus-1/services": No such file or directory
EOF in dbus-launch reading address from bus daemon