My Oracle Support Banner

DIMMs appear in prtdiag as "unknown" (Doc ID 2773801.1)

Last updated on MAY 05, 2021

Applies to:

SPARC T4-2 - Version All Versions to All Versions [Release All Releases]
SPARC T4-1 - Version All Versions to All Versions [Release All Releases]
Information in this document applies to any platform.

Symptoms

System will show one or more DIMMs as "unknown" in the prtdiag -v log

root@test:/export/home/generic# prtdiag -v | grep unknown
SYS/MB/CMP0/MR1/BOB1/CH0/D0 SERVICE unknown
SYS/MB/CMP0/MR1/BOB1/CH1/D0 SERVICE unknown

Changes

 This can usually be caused by a high uptime of the ILOM or due to noise over the i2c bus.

Cause

To view full details, sign in with your My Oracle Support account.

Don't have a My Oracle Support account? Click to get started!


In this Document
Symptoms
Changes
Cause
Solution


My Oracle Support provides customers with access to over a million knowledge articles and a vibrant support community of peers and Oracle experts.