Disconnect console from dbus - otherwise, serial console is unusable
if X session is running.

diff -ur x11-common.ORIG/etc/X11/Xsession x11-common/etc/X11/Xsession
--- x11-common.ORIG/etc/X11/Xsession	2010-08-06 06:43:51.000000000 -0600
+++ x11-common/etc/X11/Xsession	2010-07-23 12:12:00.000000000 -0600
@@ -2,7 +2,7 @@
 
 if [ -x /usr/bin/dbus-launch ]; then
     # As this is the X session script, always start a new DBus session.
-    eval `dbus-launch --sh-syntax --exit-with-session`
+    eval `dbus-launch --sh-syntax --exit-with-session </dev/null`
     echo "D-BUS per-session daemon address is: $DBUS_SESSION_BUS_ADDRESS"
 fi