T3-2 "WARNING: ios0,peu0 Link Width x1 Link Speed GEN2." (Doc ID 1517839.1)

Last updated on MAY 02, 2017

Applies to:

SPARC T3-2 - Version All Versions and later
SPARC
while running Max POST machine observed:
===============================
0:0:0>IOS register tests....Done
0:0:0>
0:0:0>WARNING: TEST = PIU link train
0:0:0>H/W under test = MOTHERBOARD, CPU_CHIP (system initialization)
0:0:0>MSG = Node 0: I/O Port 0 Link Width =1 Below Minimum 8. <<<<<<<<<<<<<<<<
0:0:0>END_WARNING

0:0:0>Network Interface Unit Port 0 Tests ..Done
0:0:0>Network Interface Unit Port 1 Tests ..Done
2013-01-06 05:38:09.241 0:0:0>INFO:
2013-01-06 05:38:09.254 0:0:0> POST Passed all devices.
=========================================
And while booting up Solaris it was showing, "WARNING: ios0,peu0 Link Width x1 Link Speed GEN2", i.e.

[CPU 0:0:0] NOTICE: Updating Config Information for Guest Manager
[CPU 0:0:0] NOTICE: Jumping to hypervisor
Hypervisor version: @(#)Hypervisor 1.11.2.b 2012/11/02 17:29

WARNING: ios0,peu0 Link Width x1 Link Speed GEN2.


SPARC T3-2, No Keyboard
Copyright (c) 1998, 2012, Oracle and/or its affiliates. All rights reserved.
================================
This is link training error during post. It should be 8.
One PEU is enough to drive whole IO sub-system, however respecting POST, should replace MB.

Symptoms

At the first, cu said there is no output from the SP. After reinsert the SP card, the issue is fixed up.
but When the server do the Max-level-post. CU found there are some warning messages shown as below:
=======================
0:0:0>WARNING: TEST = PIU link train
0:0:0>H/W under test = MOTHERBOARD, CPU_CHIP (system initialization)
0:0:0>MSG = Node 0: I/O Port 0 Link Width =1 Below Minimum 8.
0:0:0>END_WARNING
=======================
The customer not sure whether the messages are harmless. and want to know why the error appeared.
Now All the hardware are OK, I search in our KM for the warning messages, but no useful info found.
=======================

Aim:
To know this event, and cause of this.

Cause

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