PCI error log may occur with an invalid DIMM disabled event - IBM System x3550 M2, x3650 M2

Resolving The Problem

Source

RETAIN tip: H196043

Symptom

When an error occurs on the Peripheral Component Interconnect (PCI) bus, the system generates one System Event Log (SEL) event to inform users. Rarely, the system may simultaneously report an invalid memory disabled event.

Here is an example of the SEL when the failed symptom occurs:

(S.2018001) PCIe Uncorrected Error Detected
(W.50001) DIMM Disabled

Affected configurations

The system may be any of the following IBM servers:

• System x3550 M2, Type 4198, any model
• System x3550 M2, Type 7946, any model
• System x3650 M2, Type 4199, any model
• System x3650 M2, Type 7947, any model

This tip is not software specific.
This tip is not option specific.

The following system BIOS level(s) are affected:

• Version 1.03 - Build ID: D6E128A or prior levels

The system has the symptom described above.

Solution

This behavior is corrected in Unified Extensible Firmware Interface (UEFI) version 1.04 - BuildID: d6e131b or later.

The file is available from the IBM System x Support Web site at the following URL: http://www.ibm.com/systems/support/

Workaround

Disregard the memory disabled event if the 'MEM' LED on the light path diagnostics panel is not lit.

Additional information

This is due to improper Intel Memory Reference Code in Version 1.03 - Build ID: d6e128a or prior versions. A true memory disabled event always occurs with the lit 'MEM' LED. The current version of UEFI corrects this issue.