What do the messages "Fatal IO error 11 (Resource temporarily unavailable) on X server :0.0" mean?

Solution Verified - Updated -

Issue

  • Errors like the following are seen for different desktop programs:
gnome-settings-daemon: Fatal IO error 11 (Resource temporarily unavailable) on X server :0.0

Environment

  • Red Hat Enterprise Linux 4, 5, 6 and 7
  • xorg-x11-server
  • Desktop program

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