Description of problem:

The customer was set up VNC screens via xinetd to reference the following knowledge.

  https://access.redhat.com/solutions/2516.

After updating from RHEL6.7 to 6.8, it came to log out forcibly from the desktop on VNC.


Version-Release number of selected component (if applicable):

- Red Hat Enterprise Linux 6.8
- tigervnc-server
- gdm
- Desktop Environment(GNOME/KDE)


How reproducible:

- Always

Steps to Reproduce:

1. install packages

  # yum install xinetd tigervnc-server

2. create a user for VNC

  # useradd vncuser
  # sudo -u vncuser vncpasswd 

3. Edit a configuration file

  -- /etc/sysconfig/desktop --
  DESKTOP=GDM

  -- /etc/xinetd.d/vnc-personal --
  service xvnc
  {
  	disable = no
  	protocol = tcp
  	socket_type = stream
  	type = UNLISTED
  	port = 5904
  	wait = yes
  	user = vncuser
  	flags = IPv4
  	server = /usr/bin/Xvnc
  	server_args = -inetd -query localhost -once -geometry 800x600 -depth 24 -PasswordFile /home/vncuser/.vnc/passwd
  	log_on_failure += USERID
  	cps = 50 10
  	instances = 50
  	per_source - 10
  }

4. activate desktop and xinetd service 

  # init 5
  # service xinetd start
  # chkconfig vnc-personal on


  For details, please refer to https://access.redhat.com/solutions/2516.


5. Connect port#5904 with VNC client from other host.

6. On VNC screen, log in to desktop as user and wait for a while.


Actual results:

log out forcibly from the desktop when the wait a little.

Expected results:

continue to log in.


Additional info:

- It occurs regardless of the kind of desktop such as GNOME and KDE.
- gdm seems to finish without permission.