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Cisco Bug: CSCvu27460 - Trusted Platform Module State can't be disabled/enabled from CIMC GUI&CLI

Last Modified

Jul 17, 2020

Products (1)

  • Cisco Unified Computing System

Known Affected Releases

4.0(4h)C

Description (partial)

Symptom:
[Issue]
Customer wants to disable Trusted Platform Module State from CIMC GUI&CLI.
But couldn’t disable it successfully because after he disabled the TPM state,
It temporarily changed to disabled but after server booted up completely, it changed back to enabled.

mnt\jffs2\log\cv-repo\cv_messages 
2020 May 14 00:43:47 UTC: (4.0(4i)):AUDIT:1422:BIOS token modified for "TPMControl" with "Disabled" by User:admin from Interface:webgui
2020 May 14 00:53:22 UTC:(4.0(4i)):AUDIT:1422:BIOS token modified for "TPMControl" with "Disabled" by User:admin from Interface:webgui
2020 May 14 02:29:31 UTC: (4.0(4i)):AUDIT:1422:BIOS token modified for "TPMControl" with "Disabled" by User:admin from Interface:CLI

tech_support.biosbmc.xml
"TpmSupport":"Enabled",
"TPMControl":"Enabled",>>>>>>>>>>>>this is always enabled

\mnt\jffs2\avct_ems_cfg\aim\persistent

TPMControl  Enabled >>>>>>>>>>>>>>this is always enabled
TpmSupport Enabled

Conditions:
CIMC 4.0.4i
C220M5SX
No TPM module installed

.................................
tpm: 
 version: NA
 tpmPresence: empty
.................................
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