Invalid QPI link error reported when operating in minimal power mode

Troubleshooting

Problem

When operating in Minimal Power Mode, an erroneous QuickPath Interconnect (QPI) link error is reported. This is due to use of only one QPI link when operating in Minimal Power Mode. This error can be safely ignored when operating in Minimal Power Mode.

Resolving The Problem

Source

RETAIN tip: H214748

Symptom

When operating in Minimal Power Mode, an erroneous QuickPath Interconnect (QPI) link error is reported. This is due to use of only one QPI link when operating in Minimal Power Mode. This error can safely be ignored when operating in Minimal Power Mode.

Affected configurations

The system can be any of the following servers:

Flex System x240 M5 Compute Node, type 2591, any model
Flex System x240 M5 Compute Node, type 9532, any model
NeXtScale nx360 M5, type 5465, any model
NeXtScale nx360 M5, type 5467, any model
System x3500 M5, type 5464, any model
System x3550 M5, type 5463, any model
System x3650 M5, type 5462, any model

This tip is not software specific.

This tip is not option specific.

The following system BIOS/uEFI levels are affected:

C4E106J
THE108J
TAE104D
TBE106K
TCE106K

Solution

This behavior will be corrected in a future release of UEFI.

The target date for this release is forth quarter 2015.

The file will be available by selecting the appropriate Product Group, type of System, Product name, Product machine type, and Operating system on IBM Support's Fix Central web page, at the following URL:

http://www.ibm.com/support/fixcentral/

Workaround

This error can safely be ignored when operating in Minimal Power mode.

Additional information

When operating in Minimal Power Mode, the system is running with only one of two QPI links. This is the expected behavior. A QPI error is falsely reported as the second QPI link is not trained. A fix will be implement to ensure that a QPI error is not reported for the second QPI link when operating in Minimal Power Mode.

Document Location

Worldwide

Operating System

Lenovo x86 servers:Operating system independent / None

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Tips

Invalid QPI link error reported when operating in minimal power mode - Lenovo Systems