Intel® Server D50DNP Family Integration and Service Guide
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F.2 Processor Initialization Error Summary
The table below describes mixed processor conditions and actions for all Intel server boards and Intel server
systems designed with the Intel® Xeon® Scalable processor family architecture. The errors fall into one of the
following categories:
• Fatal: The system halts with a halt error code on the diagnostic LEDs and a corresponding sequence
consisting of three long flashes and one short flash is sent to the POST Error Code LED. The system
cannot boot unless the error is resolved. The faulty component must be replaced.
• Major: If the BIOS setup option “POST Error Pause” is enabled, the system goes directly to the BIOS
setup Error Manager to display the error and logs the POST error code to SEL. User intervention is
required to continue booting the system. If the BIOS setup option “POST Error Pause” is disabled, the
system continues to boot and no prompt for the error is given, although the POST error code is
logged to the BIOS setup Error Manager and to the SEL.
• Minor: An error message may be displayed on the POST screen or in the BIOS Setup Error Manager
screen and the POST error code is logged to the SEL. The system continues booting in a degraded
state. The user may want to replace the erroneous unit. The “POST Error Pause” option setting in the
BIOS setup utility does not affect this error.
Table 24. Mixed Processor Configurations Error Summary
Error Severity System Action when BIOS Detects the Error Condition
Processor family
not identical
Fatal
• Halts with error code “0xE5” on the diagnostic LED.
• Sends three long flashes and one short flash to the POST Error LED.
•
Does not boot until the fault condition is remediated.
Processor model
not identical
Fatal
• Halts with error code “0xE5” on the diagnostic LED.
• Sends three long flashes and one short flash to the POST Error LED.
• Does not boot until the fault condition is remediated.
home agent not
identical
Fatal
• Halts with error code “0xE5” on the diagnostic LED.
• Sends three long flashes and one short flash to the POST Error LED.
• Does not boot until the fault condition is remediated.
frequency (speed)
not identical
Fatal
• Halts with error code “0xE5” on the diagnostic LED.
• Sends three long flashes and one short flash to the POST Error LED.
• Does not boot until the fault condition is remediated.
Intel® UPI link
frequencies not
identical
Fatal
• Halts with error code “0xE5” on the diagnostic LED.
• Sends three long flashes and one short flash to the POST Error LED.
• Does not boot until the fault condition is remediated.
Processor
microcode update
failed
Major
• Logs the POST error code “81 6x” into the SEL.
• If the “POST Error Pause” is enabled, the BIOS loads the BIOS Error Manager to present
error message “816x: Processor 0x unable to apply microcode update” on the screen.
• If the “POST Error Pause” is disabled in the BIOS Setup continues to boot in a degraded
Processor
microcode update
missing
Minor
• Logs the POST error code “81 8x” into the SEL.
• The system continues to boot in a degraded state, regardless of the “POST Error Pause”
setting in the BIOS setup.
• The Error Manager in BIOS Setup will present the message “818x: Processor microcode
update not found”