/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" "nuke"
/etc/gdm/Xsession: Beginning session setup...
The application 'gnome-session' lost its connection to the display :0.0;
most likely the X server was shut down or you killed/destroyed
the application.