Hi, We have a desktop which has S3 suspend (to RAM) problem due to error messages as follows. [ 198.908282] tpm tpm0: Error (38) sending savestate before suspend [ 198.908289] __pnp_bus_suspend(): tpm_pm_suspend+0x0/0x160 returns 38 [ 198.908293] dpm_run_callback(): pnp_bus_suspend+0x0/0x20 returns 38 [ 198.908298] PM: Device 00:0b failed to suspend: error 38 However, the first suspend after boot is working although it still shows an interesting message during resume. [ 155.789945] tpm tpm0: A TPM error (38) occurred continue selftest The error code 38 in definition is TPM_ERR_INVALID_POSTINIT. I found some explanations which said this error code means that this command was received in the wrong sequence relative to a TPM_Startup command. Don't really know what happens here and how should I deal with this? Any suggestions? Please let me know what else information should I provide. Thanks Chris