T5-4/T5-8 I2C bus sensor on a PCI Carrier may cause fans to run at max RPM (Doc ID 2246285.1)

Last updated on MARCH 24, 2017

Applies to:

SPARC T5-8 - Version All Versions to All Versions [Release All Releases]
SPARC T5-4 - Version All Versions to All Versions [Release All Releases]
Information in this document applies to any platform.

Symptoms

 System is running at max RPMs across all fans. No errors are noted. The fans are causing a lot of noise.

FBD0/FM0/TACH | 10624.000 | RPM | ok | 3968.000 | na | na | na | na | na
FBD0/FM1/TACH | 10624.000 | RPM | ok | 3968.000 | na | na | na | na | na
FBD0/FM2/TACH | 10624.000 | RPM | ok | 3968.000 | na | na | na | na | na
FBD0/FM3/TACH | 10752.000 | RPM | ok | 3968.000 | na | na | na | na | na
FBD0/FM4/TACH | 10752.000 | RPM | ok | 3968.000 | na | na | na | na | na
FBD1/FM0/TACH | 10624.000 | RPM | ok | 3968.000 | na | na | na | na | na
FBD1/FM1/TACH | 10880.000 | RPM | ok | 3968.000 | na | na | na | na | na
FBD1/FM2/TACH | 10752.000 | RPM | ok | 3968.000 | na | na | na | na | na
FBD1/FM3/TACH | 10752.000 | RPM | ok | 3968.000 | na | na | na | na | na
FBD1/FM4/TACH | 10752.000 | RPM | ok | 3968.000 | na | na | na | na | na

 

fmadm faulty is returning empty.

No CPUS are running over 1/4 capacity.

Changes

 Firmware has been updated but has not resolved the issue.

Cause

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