Netra T5440 - I2C bus noise causing erroneous DVD behaviour

Asset ID:	1-72-2024347.1
Update Date:	2017-05-01
Keywords:

Solution Type Problem Resolution Sure

Solution 2024347.1 : Netra T5440 - I2C bus noise causing erroneous DVD behaviour

Applies to:

Sun Netra T5440 Server - Version All Versions to All Versions [Release All Releases]
Information in this document applies to any platform.

Symptoms

System will have issues using the DVD drive.

Some issues that may occur:

- The DVD drive will automatically eject any media put into it

- The DVD drive will not read any media put into it

- The system will hang when a media is put into the DVD drive

Looking at the ILOM logs (showlogs -v or show /SP/logs/event/list) some of the below may be seen:

Issues with one (or more) power supplies:

8691 Wed Jun 3 06:02:32 2015 Fault Fault critical
SP detected fault at time Wed Jun 3 06:02:32 2015. Input power unavailab
le for PSU at PS0

8690 Wed Jun 3 06:02:32 2015 Fault Fault critical
SP detected fault at time Wed Jun 3 06:02:32 2015. Input power unavailab
le for PSU at PS1

8689 Wed Jun 3 06:02:32 2015 Fault Fault critical
SP detected fault at time Wed Jun 3 06:02:32 2015. Input power unavailab
le for PSU at PS2

8688 Wed Jun 3 06:01:06 2015 Chassis Log critical
CRITICAL ALARM is set

8687 Wed Jun 3 04:56:57 2015 Fault Fault critical
SP detected fault at time Wed Jun 3 04:56:57 2015. Input power unavailab
le for PSU at PS1

8686 Wed Jun 3 04:56:56 2015 Fault Fault critical
SP detected fault at time Wed Jun 3 04:56:56 2015. Input power unavailab
le for PSU at PS2

8685 Wed Jun 3 04:56:52 2015 Fault Fault critical
SP detected fault at time Wed Jun 3 04:56:52 2015. Input power unavailab
le for PSU at PS0

Paused: press any key to continue, or 'q' to quit
8684 Wed Jun 3 04:56:39 2015 IPMI Log critical
ID = 1cf9 : 06/03/2015 : 04:56:37 : Voltage : /PS1/AC_POK : State Deasser
ted

8683 Wed Jun 3 04:56:39 2015 IPMI Log critical
ID = 1cf8 : 06/03/2015 : 04:56:36 : Voltage : /PS2/AC_POK : State Deasser
ted

8682 Wed Jun 3 04:56:32 2015 IPMI Log critical
ID = 1cf7 : 06/03/2015 : 04:56:32 : Voltage : /PS0/AC_POK : State Deasser
ted

Issues with hard drives being inserted/removed:

8621 Tue Apr 21 01:28:53 2015 Chassis Action major
Hot removal of HDD11

8620 Tue Apr 21 01:28:53 2015 Chassis Action major
Hot removal of HDD6

8619 Tue Apr 21 01:28:53 2015 Chassis Action major
Hot insertion of HDD1

8618 Tue Apr 21 01:28:52 2015 Chassis Action major
Hot removal of HDD7

8617 Tue Apr 21 01:28:52 2015 Chassis Action major
Hot removal of HDD2

8616 Tue Apr 21 01:28:50 2015 Chassis Action major
Hot removal of HDD8

8615 Tue Apr 21 01:28:50 2015 Chassis Action major
Hot removal of HDD3

ID = 1cf6 : 05/28/2015 : 00:58:20 : Entity Presence : /HDD10/PRSNT : Devi
ce Absent

Paused: press any key to continue, or 'q' to quit
8654 Thu May 28 00:58:26 2015 IPMI Log minor
ID = 1cf5 : 05/28/2015 : 00:58:20 : Entity Presence : /HDD5/PRSNT : Devic
e Absent

8653 Thu May 28 00:58:26 2015 IPMI Log minor
ID = 1cf4 : 05/28/2015 : 00:58:20 : Entity Presence : /HDD0/PRSNT : Devic
e Present

8652 Thu May 28 00:58:26 2015 IPMI Log minor
ID = 1cf3 : 05/28/2015 : 00:58:18 : Entity Presence : /HDD11/PRSNT : Devi
ce Absent

8651 Thu May 28 00:58:26 2015 IPMI Log minor
ID = 1cf2 : 05/28/2015 : 00:58:18 : Entity Presence : /HDD6/PRSNT : Devic
e Absent

8650 Thu May 28 00:58:26 2015 IPMI Log minor
ID = 1cf1 : 05/28/2015 : 00:58:18 : Entity Presence : /HDD1/PRSNT : Devic
e Present

8649 Thu May 28 00:58:26 2015 IPMI Log minor
ID = 1cf0 : 05/28/2015 : 00:58:17 : Entity Presence : /HDD7/PRSNT : Devic
e Absent

8648 Thu May 28 00:58:26 2015 IPMI Log minor
ID = 1cef : 05/28/2015 : 00:58:17 : Entity Presence : /HDD2/PRSNT : Devic
e Absent

8647 Thu May 28 00:58:26 2015 IPMI Log minor
ID = 1cee : 05/28/2015 : 00:58:16 : Entity Presence : /HDD8/PRSNT : Devic
e Absent

8646 Thu May 28 00:58:26 2015 IPMI Log minor
ID = 1ced : 05/28/2015 : 00:58:16 : Entity Presence : /HDD3/PRSNT : Devic
e Absent

8645 Thu May 28 00:58:25 2015 IPMI Log minor
ID = 1cec : 05/28/2015 : 00:58:14 : Entity Presence : /HDD9/PRSNT : Devic
e Absent

Paused: press any key to continue, or 'q' to quit
8644 Thu May 28 00:58:14 2015 IPMI Log minor
ID = 1ceb : 05/28/2015 : 00:58:14 : Entity Presence : /HDD4/PRSNT : Devic
e Absent

Issues with insertion/removal of the SASBP and the SAS Expander (which isn't hooked up directly to the PDB but is hooked up to the SASBP which is connected to the PDB):

8633 Sun May 24 05:33:05 2015 IPMI Log minor
ID = 1cea : 05/24/2015 : 05:33:05 : Entity Presence : /SASBP/PRSNT : Stat
e Asserted

8632 Sun May 24 05:32:59 2015 IPMI Log minor
ID = 1ce9 : 05/24/2015 : 05:32:59 : Entity Presence : /SASBP/PRSNT : Stat
e Deasserted

8631 Sun May 17 05:01:01 2015 Chassis Action major
Hot insertion of /SYS/SAS_EXP

8630 Sun May 17 05:00:52 2015 IPMI Log minor
ID = 1ce8 : 05/17/2015 : 05:00:52 : Entity Presence : /SAS_EXP/PRSNT : St
ate Asserted

8629 Sun May 17 05:00:50 2015 Chassis Action major
Hot removal of /SYS/SAS_EXP

8628 Sun May 17 05:00:46 2015 IPMI Log minor
ID = 1ce7 : 05/17/2015 : 05:00:46 : Entity Presence : /SAS_EXP/PRSNT : St
ate Deasserted

8627 Wed May 6 00:08:51 2015 Chassis Action major
Hot insertion of /SYS/SAS_EXP

8626 Wed May 6 00:08:43 2015 IPMI Log minor
ID = 1ce6 : 05/06/2015 : 00:08:43 : Entity Presence : /SAS_EXP/PRSNT : St
ate Asserted

8625 Wed May 6 00:08:40 2015 Chassis Action major
Hot removal of /SYS/SAS_EXP

Paused: press any key to continue, or 'q' to quit
8624 Wed May 6 00:08:37 2015 IPMI Log minor
ID = 1ce5 : 05/06/2015 : 00:08:37 : Entity Presence : /SAS_EXP/PRSNT : St
ate Deasserted

Cause

The issue is caused by noise on the I2C bus.

Solution

Make sure your firmware is up to date.

If it is, please open an SR with Oracle support to investigate the issue.

An ILOM snapshot would be required.

NOTE: If all you're seeing are the HDD messages, please see "Hot removal of HDDx" or "/HDDx/PRSNT :Device Absent" appears upon poweron or resetting SP with System Firmware 7.3.0 or later (Doc ID 1632323.1)

NOTE 2: If your system won't power on at all, but you still see some of the messages, you may be hitting T5120/T5220/T5140/T5240 and Netras - System may not power on or report many errors on both power supplies (Doc ID 1642386.1)

Looking at the wiring diagram for the Netra T5440, notice that the DVD is connected to the PDB directly (via the DVD board/riser). Replacing the PDB usually will resolve any I2C bus noise issues. For additional safety measure, the DVD drive can also be considered for replacement.

References

<NOTE:1632323.1> - "Hot removal of HDDx" or "/HDDx/PRSNT :Device Absent" appears upon poweron or resetting SP with System Firmware 7.3.0 or later
<NOTE:1642386.1> - T5120/T5220/T5140/T5240 and Netras - System may not power on or report many errors on both power supplies

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