Hello, I have a Lenovo Thinkpad, running Debian Trixie.
I have enabled TPM and IOMMU in the BIOS However, when I boot the laptop, I cannot have both options working together. It is either tpm2 or iommu, but not both. If I add "iommu=off" on the Linux command line, the TPM is working. If I don't do anything. IOMMU is working. but the TPM2 chip is not found: I have secure boot enabled. Kernel: Linux lovelace 6.18.5+deb13-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.18.5-1~bpo13+1 (2026-02-04) x86_64 GNU/Linux Any idea why, please ? Thanks for your help.
