/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" "david"
/etc/gdm/Xsession: Beginning session setup...
Setting IM through im-switch for locale=en_US.
Start IM through /etc/X11/xinit/xinput.d/all_ALL linked to /etc/X11/xinit/xinput.d/default.
/usr/bin/startxfce4: X server already running on display :0
Not initializing the Gtk-Qt theme engine

** (xfwm4:24426): WARNING **: The display does not support the XComposite extension.

** (xfwm4:24426): WARNING **: Compositing manager disabled.
Not initializing the Gtk-Qt theme engine

(xfwm4:24426): libxfcegui4-WARNING **: ICE I/O Error

(xfwm4:24426): libxfcegui4-WARNING **: Disconnected from session manager.
xfwm4: Fatal IO error 104 (Connection reset by peer) on X server :0.0.