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Vinay Sharma
Level 7
Level 7

 

Introduction

Cisco Unified Computing System Manager - Fatal Error - Event Sequencing is Skewed, would you like and login again, or exit?

Problem Description

User is have issue with with Cisco UCS manager, after logging in UCS Manager i get an error. 

User tested it with windows 2003 server and 2008 virtual machines, which does not enter sleep mode and the problem persists in order to eliminate CSCta94641 (mentioned below). 

Related Bugs

Fatal Error: Event Sequencing is skewed msg when coming back from sleep - CSCta94641
Problem Description:

When waking up from sleep, UCSM GUI will detect an event sequencing error and display the error: "Event Sequencing is skewed", as the JRE doesn't have a sleep detection mechanism.

Workaround:

Always shutdown UCSM GUI before putting your computer to sleep.

Known Affected Releases:
1.0(1.56)

More Information

Q. What UCSM version?

A. Cisco UCS Manager - 2.0(1s).

Q. Can you reproduce at will? If yes, what steps do you take to make this happen?

A. Yes, Open the UCS manager.

Q. Do you really get logged out? what happens if you just try to close the pop-up window? are you kicked out?

A. I always off, close the window and closes all.

Q. Any recent change in the firmware or Java version?

A. 1.6

Q. Does this happen when connecting through a PC?

A. Yes. really all host including laptop, pc, vm.

Solution

Definitely looks like a bug cause UCSM is not doing what it is supposed to and the only bug that really fits (based on the version you are running) is internal Bug CSCum95854:

Defect ID
Description
First Bundle Affected
Resolved in Release

CSCum95854

Cisco UCS Manager no longer frequently closes with an "event sequencing is skewed" error.

2.2(2c)A

3.0(2c)A

Known Affected Releases:
2.2(1.117)A
2.2(1.123)A

Known Fixed Releases:
2.2(2c)
2.2(3a)
2.5(1a)
3.0(2c)

The problem is resolved with a update to version 2.2(3g). 

Relevant Information

Troubleshooting Cisco UCS Manager Issues
Event Sequencing Fatal Error
 
Problem—After coming back from sleep mode, the Cisco UCS Manager GUI displays the following message:
Fatal error: event sequencing is skewed.
Possible Cause—This problem can be caused if the Cisco UCS Manager GUI was running when the computer went to sleep. Since the JRE does not have a sleep detection mechanism, the system is unable to retrack all of the messages received before it went into sleep mode. After multiple retries, this event sequencing error is logged.
Note
Always shut down Cisco UCS Manager GUI before putting your computer to sleep.
Procedure
In Cisco UCS Manager GUI, if a Connection Error dialog box is displayed, click one of the following:
  • Click Re-login to log back in to the Cisco UCS Manager GUI.
  • Click Exit to exit the Cisco UCS Manager GUI.

Source

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