Voltage error and CPU over temperature causes system shutdown

Troubleshooting

Problem

The IBM System x3755 M3, Type 7164 might encounter intermittently multiple events of voltage fault or Central Processing Unit (CPU) high temperature with a specific value equal to the raw value '0xFF' in an Intelligent Platform Management Interface (IPMI) Event, such as (See Symptom section for a large sample event log).

Resolving The Problem

Source

RETAIN tip: H207632

Symptom

	- 1.2 Volt # 1 - 10/28/2012 04:07:38 System board 1 (Voltage - ): Assertion: Upper Critical - going high. Trigger threshold value: 1.26 Volts. Trigger reading: 1.99 Volts. # 2 - 10/28/2012 04:07:40 System board 1 (Voltage - ): Assertion: Upper Non-recoverable - going high. Trigger threshold value: 1.32 Volts. Trigger reading: 1.99 Volts. # 3 - 10/28/2012 04:07:47 Power unit / power domain 3 (Power Unit - HOST_POWER): Assertion: Power Off / Power Down. # Note: 1.99 Volt is the raw value 0xFF of 1.2 Volt - 3.3 Volt # 1 - 10/12/2012 23:12:52 System board 1 (Voltage - ): Assertion: Upper Critical - going high. Trigger threshold value: 3.46 Volts. Trigger reading: 4.39 Volts. # 2 - 10/12/2012 23:12:53 System board 1 (Voltage - ): Assertion: Upper Non-recoverable - going high. Trigger threshold value: 3.63 Volts. Trigger reading: 4.39 Volts. # 3 - 10/12/2012 23:13:01 Power unit / power domain 3 (Power Unit - HOST_POWER): Assertion: Power Off / Power Down. # Note: 4.39 Volt is the raw value 0xFF of 1.2 Volt - CPU 4 Temp # 1 - 10/13/2012 01:43:20 Processor 4 (Temperature - n): Assertion: Upper Non-critical - going high. Trigger threshold value: 75.00 degrees C. Trigger reading: 255.00 degrees C. # 2 - 10/13/2012 01:43:22 Processor 4 (Temperature - n): Assertion: Upper Critical - going high. Trigger threshold value: 80.00 degrees C. Trigger reading: 255.00 degrees C # 3 - 10/13/2012 01:43:24 Processor 4 (Temperature - n): Assertion: Upper Non-recoverable - going high. Trigger threshold value: 85.00 degrees C. Trigger reading: 255.00 degrees C. # 4 - 10/13/2012 01:43:30 Power unit / power domain 3 (Power Unit - HOST_POWER): Assertion: Power Off / Power Down. # Note: 255.00C is the raw value 0xFF of CPU temperature.

Affected Configurations

The system can be any of the following IBM servers:

System x3755 M3, type 7164, any model

This tip is not software specific.

This tip is not option specific.

The following system firmware levels are affected:

iBMC v1.02 Build ID: AYOO30J, and earlier versions

Solution

This behavior was corrected in Integrated Baseboard Management Controller (IBMC) Version 1.07, AYOO32Q, and later versions.

The file is available by selecting the appropriate Product Group, type of System, Product name, Product machine type, and Operating system on IBM Support's Fix Central web page, at the following URL:

	http://www.ibm.com/support/fixcentral/

Additional Information

The affected sensors are:

Sensor ID	Sensor Description	Value of 0xFF
0x00	P1_TMP	255 C
0x01	P2_TMP	255 C
0x02	P3_TMP	255 C
0x03	P4_TMP	255 C
0x32	VDD_12V_1	16.07 Volts
0x75	VDD_12V_2	16.07 Volts
0x76	VDD_12V_3	16.07 Volts
0x77	VDD_12V_4	16.07 Volts
0x78	VDD_12V_5	16.07 Volts
0x79	VDD_12V_6	16.07 Volts
0x7A	VDD_12V_7	16.07 Volts
0x33	VDD_VLDT_P1	1.600 Volts
0x34	VDD_VLDT_P2	1.600 Volts
0x35	VDD_VLDT_P3	1.600 Volts
0x36	VDD_VLDT_P4	1.600 Volts
0x37	VDD_P1_VDDA	3.333 Volts
0x38	VDD_P2_VDDA	3.333 Volts
0x39	VDD_P3_VDDA	3.333 Volts
0x3A	VDD_P4_VDDA	3.333 Volts
0x3E	VDD_1.1_RUN	1.99 Volts
0x3D	VDD_1.2_RUN	1.99 Volts
0X3C	VDD_1.8_RUN	2.39 Volts
0x3B	VDD_3.3_RUN	6.63 Volts
0x3F	VDD_3.3_STBY	4.40 Volts
0x40	VDD_5_RUN	6.63 Volts
0x41	RTC_BATTERY	3.97 Volts

Document Location

Worldwide

Operating System

System x:Operating system independent / None

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Tips

Voltage error and CPU over temperature causes system shutdown - IBM System x3755 M3 (type 7164)