Thank you, back on track. I start a VNC session and turn on sharing. When I attempt to log onto a second session the session gracefully closes when the password is entered. If I edit the /etc/xinetd.d/vnc file and add AlwaysShared = Yes I am able to start a second session but logout does not work. Anyway, here is the output after the first session is logged in and output after the second session closes. Where would the configuration file be for the VNC server that starts at IPL time? What else can I do to debug this problem. Thanks again.
linux140:~ # systemctl status display-manager -l
display-manager.service - X Display Manager
Loaded: loaded (/usr/lib/systemd/system/display-manager.service; enabled)
Active: active (running) since Sun 2015-01-25 16:09:19 EST; 3min 10s ago
Process: 605 ExecStart=/usr/lib/X11/display-manager start (code=exited, status=0/SUCCESS)
Main PID: 662 (gdm)
CGroup: /system.slice/display-manager.service
├─ 662 /usr/sbin/gdm --no-console
└─1382 /usr/lib/gdm/gdm-simple-slave --display-id /org/gnome/DisplayManager/Displays/__1_2

Jan 25 16:09:19 linux140 display-manager[605]: Failed to execute child process "/usr/bin/X" (No such file or directory)
Jan 25 16:09:19 linux140 display-manager[605]: Could not start the X server (your graphical environment) due to an internal error. Please contact your system administrator or check your syslog to diagnose. In the meantime this display will be disabled. Please restart GDM when the problem is corrected.
Jan 25 16:09:19 linux140 display-manager[605]: GdmDisplay: display lasted 0.011153 seconds
Jan 25 16:09:19 linux140 display-manager[605]: Failed to execute child process "/usr/bin/X" (No such file or directory)
Jan 25 16:09:19 linux140 display-manager[605]: Could not start the X server (your graphical environment) due to an internal error. Please contact your system administrator or check your syslog to diagnose. In the meantime this display will be disabled. Please restart GDM when the problem is corrected.
Jan 25 16:09:19 linux140 display-manager[605]: GdmDisplay: display lasted 0.011674 seconds
Jan 25 16:09:19 linux140 display-manager[605]: GdmLocalDisplayFactory: maximum number of X display failures reached: check X server log for errors
Jan 25 16:11:55 linux140 gdm-launch-environment][1393]: pam_unix(gdm-launch-environment:session): session opened for user gdm by (uid=0)
Jan 25 16:12:16 linux140 gdm-password][1502]: pam_unix(gdm-password:session): session opened for user root by (unknown)(uid=0)
Jan 25 16:12:17 linux140 display-manager[605]: Failed to remove slave program access to the display. Trying to proceed.
linux140:~ # systemctl status display-manager -l
display-manager.service - X Display Manager
Loaded: loaded (/usr/lib/systemd/system/display-manager.service; enabled)
Active: active (running) since Sun 2015-01-25 16:09:19 EST; 4min 29s ago
Process: 605 ExecStart=/usr/lib/X11/display-manager start (code=exited, status=0/SUCCESS)
Main PID: 662 (gdm)
CGroup: /system.slice/display-manager.service
├─ 662 /usr/sbin/gdm --no-console
└─1382 /usr/lib/gdm/gdm-simple-slave --display-id /org/gnome/DisplayManager/Displays/__1_2

Jan 25 16:09:19 linux140 display-manager[605]: GdmDisplay: display lasted 0.011674 seconds
Jan 25 16:09:19 linux140 display-manager[605]: GdmLocalDisplayFactory: maximum number of X display failures reached: check X server log for errors
Jan 25 16:11:55 linux140 gdm-launch-environment][1393]: pam_unix(gdm-launch-environment:session): session opened for user gdm by (uid=0)
Jan 25 16:12:16 linux140 gdm-password][1502]: pam_unix(gdm-password:session): session opened for user root by (unknown)(uid=0)
Jan 25 16:12:17 linux140 display-manager[605]: Failed to remove slave program access to the display. Trying to proceed.
Jan 25 16:13:14 linux140 gdm-launch-environment][1763]: pam_unix(gdm-launch-environment:session): session opened for user gdm by (uid=0)
Jan 25 16:13:37 linux140 gdm-password][1841]: pam_unix(gdm-password:session): session opened for user root by (unknown)(uid=0)
Jan 25 16:13:38 linux140 display-manager[605]: Failed to remove slave program access to the display. Trying to proceed.
Jan 25 16:13:38 linux140 display-manager[605]: GLib-GObject: g_object_ref: assertion 'object->ref_count > 0' failed
Jan 25 16:13:38 linux140 display-manager[605]: GLib-GObject: g_object_unref: assertion 'object->ref_count > 0' failed