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RHEL v6.2 and HP Servers

The Problem

On attemping a PXE install of some HP servers with RHEL 6.2 the following messages appear on screen

  NMI received for unknown reason XY on CPU 0
  Do you have a strange power saving mode enabled?
  Dazed and confused, but trying to continue
and the internal health LED changes from green to red. At some random time thereafter the server locks up; the hard-disk activity light goes red.

Actually, on rare occasion, the installation finishes, but then the server locks at some random time after boot.


All was well with RHEL 5.5.

Red Herrings and Wild Goose Chases


Use the pcie_aspm=off kernel parameter. Problem gone.