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C – Troubleshooting
BIOS Settings
C-2 IB6054601-00 D
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states of the LEDs. The green LED will normally illuminate first. The normal state
is Green On, Amber On.
If a node repeatedly and spontaneously reboots when attempting to load the
InfiniPath driver, it may be a symptom that its InfiniPath interconnect board is not
well seated in the HTX or PCIe slot.
C.1.2
Some HTX Motherboards May Need 2 or More CPUs in Use
Some HTX motherboards may require that 2 or more of the CPUs be in use for the
HTX InfiniPath card to be recognized. This is most evident in four-socket
motherboards.
C.2
BIOS Settings
This section covers issues related to improper BIOS settings.The two most
important settings are:
■ ACPI needs to be enabled
■ MTRR mapping needs to be set to “Discrete”
If ACPI has been disabled, it may result in initialization problems, as described in
appendix C.4.4.
An improper setting for MTRR mapping can result in reduced performance. See
appendix C.2.2, appendix C.2.3, and appendix C.2.3 for details.
NOTE: BIOS settings on IBM Blade Center H (Power) systems do not need
adjustment.
Table C-1. LED Link and Data Indicators
LED Color Status
Power Green ON
Signal detected.
Ready to talk to an SM to bring
link fully up.
OFF
Switch not powered up.
Software not installed or started.
Loss of signal.
Check cabling.
Link Amber ON
Link configured.
Properly connected and ready
to receive data and link packets.
OFF
SM may be missing.
Link may not be configured.
Check the connection.