Not able to access desktop/server/station console for Red Hat Online Learning course

Solution Verified - Updated -


  • Can not view online training material, the running console screen appears to be blank.
  • Not able to start the desktop and server console from the browser after login to ROL.
  • Unable to access the training VM (Virtual Machine) workstation for the ROL(ROLE) class.
  • Virtual machine on ROL environment have blank consoles.
  • Trouble connecting to station in ROLE training course.
  • Getting below error messages while starting the machines or machine stuck with below messages,
rfb_state_change    failed --> disconnected (undefined)
rfb_state_change    connect --> failed (Server disconnected (code: 1006))
rfb_state_change    failed --> connect (undefined)
  • Desktop and Server VMs attempt to boot but seem to hang on network.
  • Lab Environment: "white box/screen" under system buttons.


  • Red Hat Enterprise Linux 5/6/7
  • Windows OS
  • Firefox
  • Chrome
  • Red Hat Online Learning 1.0

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