Introduction
The intent of this document is to address the issue seen regarding Trusted Platform Module (TPM) related System Event Logs (SEL) events on some C460 M4 servers. A small number of C460 M4 SPARE servers will see a critical SEL event related to TPM presence right out of the factory. The instructions below will assist you in resolving servers impacted by this issue.
Problem
Potentially Impacted Systems:
About 614 SPARE C460 M4 Systems (Shipped between June 2nd 2014, and April 13th 2016.)
Customer Visibility / Impact:
Customers may see a critical SEL event similar to the one below on servers received from the factory.
![](/c/dam/en/us/support/docs/servers-unified-computing/ucs-c-series-rack-servers/200444-C460-M4-TPM-Messages-In-The-SEL-Logs-00.png)
There is NO operational impact to the server, but the message may lead to unessary concern resulting in a call to TAC. This has to do with the way TPMs were handeled in manufacturing. C460 M4 systems keep a "Cached" value for TPM presence, indicating if a TPM was was ever installed in the server - every server has a TPM installed durring testing. The C460 M4 also tracks the current precense of the TPM, and since all servers ordered as spares ship without a TPM, the system triggers an alarm thinking that the module that was once installed has been removed.
Solution
The work-arround below will allow you to quickly address this SEL event should you wish to remove the messages. The work-arround involves resetting the Integrated Management Controller (IMC) to factory default settings, clearing any cached TPM Presence value.
Work Around Options:
Work Around 1 - Reset the IMC to Factory Default Settings
Resting to Factory Defaults via IMC WebUI
- Point a browser to the IMC IP, login, and navigate to the Admin --> Utilities tab
- Click the "Reset Cisco IMC to Factory Default Configuration" as shown in the image below.
![](/c/dam/en/us/support/docs/servers-unified-computing/ucs-c-series-rack-servers/200444-C460-M4-TPM-Messages-In-The-SEL-Logs-01.png)
3. You will be prompted with a pop up box. Click OK to proceed.
Note: The IMC will reset completely and you will need to reconfigure all settings. Please record any information prior to the reset.
![](/c/dam/en/us/support/docs/servers-unified-computing/ucs-c-series-rack-servers/200444-C460-M4-TPM-Messages-In-The-SEL-Logs-02.png)
Work Around 2 - Resetting to Factory Defaults via IMC CLI
- SSH to the IMC IP using the user's credentials.
- Type the following commands as shown below:
a. scope cimc
b. factory-default
![](/c/dam/en/us/support/docs/servers-unified-computing/ucs-c-series-rack-servers/200444-C460-M4-TPM-Messages-In-The-SEL-Logs-03.png)
3. Enter "y" to continue.
Note: The IMC will reset completely and you will need to reconfigure all settings.
Please record any information prior to the reset.