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T5120/T5220/T5140/T5240 Voltage issues host is being powered off due to VDD errors (Doc ID 2445721.1)

Last updated on NOVEMBER 12, 2020

Applies to:

Sun SPARC Enterprise T5140 Server - Version All Versions to All Versions [Release All Releases]
Sun SPARC Enterprise T5220 Server - Version All Versions to All Versions [Release All Releases]
Sun SPARC Enterprise T5240 Server - Version All Versions to All Versions [Release All Releases]
Sun SPARC Enterprise T5120 Server - Version All Versions to All Versions [Release All Releases]
Information in this document applies to any platform.

Symptoms

The server crashed due to Critical Voltage Issues on Motherboard and the server fails to power on.

 

 

Event list will show VDD errors typically on a single sensor, though different machines can have different VDD sensors go off:

+1V2_VDD
-> show -script /X/logs/event/list
      Critical voltage value : host is being powered off
556    Wed Sep  5 12:15:27 2018  Chassis   Log       critical     <====== SERVER CRASHED, POWERED OFF
      Critical voltage value : host is being powered off
549    Wed Sep  5 12:07:52 2018  IPMI      Log       critical
      ID =  a00 : 09/05/2018 : 12:07:52 : Voltage : /MB/V_+1V2_VDD : Lower Non-recoverable going low  : reading 0.72 <= threshold 1.08 Volts   <====== LOW Voltage detected
548    Wed Sep  5 12:06:39 2018  Fault     Fault     critical
      SP detected fault at time Wed Sep  5 12:06:39 2018. V_+1V2_VDD at /SYS/MB has exceeded low non-recoverable threshold.
547    Wed Sep  5 12:06:39 2018  IPMI      Log       major  
      ID =  900 : 09/05/2018 : 12:06:39 : Voltage : /MB/V_+1V2_VDD : Lower Critical going low  : reading 0.71 <= threshold 1.09 Volts
546    Wed Sep  5 12:06:18 2018  IPMI      Log       minor  
      ID =  800 : 09/05/2018 : 12:06:18 : Voltage : /MB/V_+1V2_VDD : Lower Non-critical going low  : reading 0.71 <= threshold 1.12 Volts
545    Wed Sep  5 12:05:54 2018  Chassis   Log       major  
      Host has been powered on                                                          <====== SERVER IS ON
544    Wed Sep  5 12:05:52 2018  Audit     Log       minor  
      root : Set : object = "/SYS/power_state" : value = "on" : success

 

+1V0_VDD
2303   Fri Jan 25 07:26:41 2019  IPMI      Log       minor          ID = ef00 : 01/25/2019 : 07:26:41 : Voltage : /MB/V_+1V0_VDD : Lower Non-critical going high : reading 1.00 >=

threshold 0.94 Volts
2298   Fri Jan 25 07:25:54 2019  IPMI      Log       minor          ID = ee00 : 01/25/2019 : 07:25:54 : Voltage : /MB/V_+1V0_VDD : Lower Non-critical going low  : reading 0.92 <=
threshold 0.94 Volts

 

 On some occasions you may also see fatal errors on one or more CPUs:

2300   Fri Jan 25 07:26:23 2019  Chassis   Log       major          Jan 25 07:26:23 ERROR: [CMP1  ] Received Fatal Error
2299   Fri Jan 25 07:26:23 2019  Chassis   Log       major          Jan 25 07:26:23 ERROR: [CMP0  ] Received Fatal Error

Or

2365   Mon Jan 28 06:58:51 2019  Fault     Fault     critical
      SP detected fault at time Mon Jan 28 06:58:51 2019. /SYS/MB/CMP1/P0 CPU causing reset errors
2364   Mon Jan 28 06:58:51 2019  Fault     Fault     critical
      SP detected fault at time Mon Jan 28 06:58:51 2019. /SYS/MB/CMP0/P0 CPU causing reset errors

 

Changes

 None

Cause

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In this Document
Symptoms
Changes
Cause
Solution
References


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