System can't reboot properly, manual halt has to be triggered through Power Button.

Solution Verified - Updated -

Issue

  • The server fails to reboot or halt, seemingly unable to return to the hardware when the OS is requested to 'stop'.
  • This appears to hang after outputting halting necessitating an ILO manual interaction (i.e. COLD BOOT , or simulated power action)
  • What can cause this problem?

Environment

  • Red Hat Enterprise Linux 6.4

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