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The device driver, tpm_tis_spi, in SUSE Linux Enterprise Server 15 SP5 QU1 for ARM with HPE ProLiant Compute DL384 Gen12 servers does not support the Trusted Platform Module (TPM) chip. The driver does not contain some patches; therefore, the following message is displayed in dmesg:No TPM chip found, activating TPM-bypassThe driver in SUSE Enterprise Server 15 SP6 for ARM and Red Hat Enterprise Linux 9.4 for ARM does support the HPE ProLiant Compute DL384 Gen12, but there is a race condition between the TPM and Linux Integrity Measurement Architecture (IMA) subsystem. The message indicates that the TPM device is still populated without any problem.The same message “No TPM Chip Found, Activating TPM-Bypass” is displayed on SUSE Linux Enterprise Server 15SP5 QU1, SUSE Linux Enterprise Server 15 SP6, and Red Hat Enterprise Linux 9.4.The message occurs on SUSE Linux Enterprise Server 15 SP5 QU1 is because the driver is not able to support the TPM.The message occurs on SUSE Linux Enterprise Server 15 SP6 and Red Hat Enterprise Linux 9.4 is because of the race condition.
Any HPE ProLiant Compute DL384 Gen12 with SUSE Linux Enterprise Server 15 SP5 QU1 for ARM, SUSE Enterprise Server 15 SP6 for ARM or Red Hat Enterprise Linux 9.4 for ARM.
For the SUSE Linux Enterprise Server 15 SP5 QU1 for ARM users, obtain the fix in the Long Term Service Pack Support (LTSS) or upgrade to SUSE Linux Enterprise Server 15 SP6 for ARM available on the SUSE website.For Red Hat Enterprise Linux 9.4 for ARM and SUSE Linux Enterprise Server 15 SP6 for ARM, ignore the message "No TPM chip found, activating TPM-bypass."
Operating Systems Affected:Red Hat Enterprise Linux 9 for ARM, SUSE Linux Enterprise Server 15
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