LTS Kernel 5.16.0-22.04 Causes 25s Boot Delay and TPM Firmware Bug on Some Systems

Affected Systems:

Systems running the Linux kernel version 5.16.0-22.04 LTS may experience a delay of approximately 25 seconds during the boot process.

Error Message:

Users may encounter the following error message when attempting to boot using the default mode:

dmesg grep tpm_crb

try against to boot into default mode

Cause:

The issue is related to a firmware bug in the tpm_crb msft0101 module that occurs after updating to kernel version 5.16.0-22.04 LTS.

Troubleshooting:

To resolve the issue, users can try the following steps:

1. Go to Start > Settings > Update & Security > Windows Security > Device security.
2. Under Security processor, select Security processor details.
3. Select Security processor troubleshooting.