Hi Jarkko, A user report that the system can only do S3 once. Subsequent S3 fails after commit a3fbfae82b4c ("tpm: take TPM chip power gating out of tpm_transmit()"). Dmesg with the issue, collected under 5.10-rc2: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1891502/comments/14 Dmesg without the issue, collected under 5.0.0-rc8: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1891502/comments/16 Full bug report here: https://bugs.launchpad.net/bugs/1891502 Kai-Heng