On Sun, Dec 16, 2018 at 02:32:38PM +0100, Michael Niewöhner wrote: > dmesg cold boot with tpm_tis.interrupts=0 tpm_tis.force=1: > ---------------------------------------------------------- > > dmesg | grep -i tpm > [ 0.000000] Command line: initrd=\initrd-test console=ttyS0,115200n8 > break=premount tpm_tis.interrupts=0 tpm_tis.force=1 > [ 0.000000] efi: ACPI > 2.0=0x9e07e000 ACPI=0x9e07e000 SMBIOS=0x9ebeb000 SMBIOS > 3.0=0x9ebea000 MEMATTR=0x98fb2018 TPMEventLog=0x972bb018 > [ 0.003531] ACPI: TPM2 0x000000009E0B7F70 000034 (v03 LENOVO TC- > S06 00001260 AMI 00000000) > [ 0.162005] Kernel command line: initrd=\initrd-test console=ttyS0,115200n8 > break=premount tpm_tis.interrupts=0 tpm_tis.force=1 > [ 3.616806] tpm_tis MSFT0101:00: 2.0 TPM (device-id 0xFE, rev-id 2) > [ 3.683117] tpm_tis tpm_tis: can't request region for resource [mem > 0xfed40000-0xfed44fff] > [ 3.691378] tpm_tis: probe of tpm_tis failed with error -16 > [ 4.572539] ima: Error Communicating to TPM chip Wonder why this happens. What does /proc/iomem show? /Jarkko