As of now, the TPM of the Bolt is unusable in Linux because of a "reserved" I/O ACPI-region that overlaps with the TPM. The tpm_crb driver module reports [ 0.454180] tpm_crb MSFT0101:00: can't request region for resource [mem 0x9d762000-0x9d765fff] [ 0.454218] tpm_crb: probe of MSFT0101:00 failed with error -16 [ 0.494982] ima: No TPM chip found, activating TPM-bypass! The ACPI region in question is BIOS-e820: [mem 0x000000009ccaa000-0x000000009d78cfff] reserved The problem seems to be quite common with AMD chipsets; for discussions see here (tldr? ->scroll to the end): https://bugzilla.redhat.com/show_bug.cgi?id=1394912 I tested some patches to work around the BIOS-bug, but none of them worked. Please, please, fix that!