On Wed, 2022-12-28 at 21:22 +0100, Vlastimil Babka wrote: > Ugh, while the problem [1] was fixed in 6.1, it's now happening again > on the T460 with 6.2-rc1. Except I didn't see any oops message or > "tpm_try_transmit" error this time. The first indication of a problem > is this during a resume from suspend to ram: > > tpm tpm0: A TPM error (28) occurred continue selftest > > and then periodically > > tpm tpm0: A TPM error (28) occurred attempting get random That's a TPM 1.2 error which means the TPM failed the selftest. The original problem was reported against TPM 2.0 because of a missing try_get_ops(). The tpm 1.2 command path was never changed to require this (and in fact hasn't changed for ages, TPM 1.2 being a bit obsolete). So this looks like a new problem with TPM 1.2 and suspend/resume, likely in the BIOS of your system. James
