On Sun, 2018-11-11 at 19:50 +0100, Michael Niewöhner wrote: [...] > > However, this makes me wonder about yours: > > > > > [ 0.003517] ACPI: TPM2 0x000000009E490ED8 000034 (v03 LENOVO > > > TC- > > > S06 00001300 AMI 00000000) > > > > I thought the Lenovo "upgrade to 2.0" in fact disabled the external > > TPM in favour of the Intel PTT (software TPM in the management > > engine). Since you apparently have the tpm_crb driver that should > > find the PTT TPM, this might be one of the attachment bugs in the > > CRB driver ... from your ACPI output it looks to be not specifying > > the Tpm2Tabl. > > Well, there are at least two implementations I know of: > For my Lenovo X260 I can choose between Infineon TPM 1.2 or Intel PTT > TPM 2.0 This here is my ThinkStation P320 which can choose between > PTT 1.2, PTT 2.0, > Nuvoton 1.2 and 2.0. When switchting between 1.2 and 2.0 the Nuvoton > gets > reflashed with the appropriate firmware. Well, I still think the ACPI setup is incorrect. What's in /sys/class/platform (should be directories of ACPI devices)? The TPM is supposed to show up as MSFT0101. If it doesn't is there any other device string in there that might be a TPM? James
