Acpi | Ifx0102

So, ACPI IFX0102 = chip attached via the LPC bus and exposed through ACPI firmware. 2. What It Actually Is: TPM 1.2 The IFX0102 is a TPM (Trusted Platform Module) 1.2 device, typically the Infineon SLB 9635 TT 1.2 or similar.

dmesg | grep -i tpm ls /dev/tpm* sudo tpm_version If you see TPM 1.2, Infineon , that’s your IFX0102. acpi ifx0102

Because on many systems (especially Acer, Gateway, eMachines, Packard Bell — all using similar InsydeH2O or Phoenix BIOSes), the TPM wasn’t directly enumerated by PCI or PNP. Instead, the BIOS’s ACPI namespace contained a device definition like: So, ACPI IFX0102 = chip attached via the

Reboot → Security tab → Look for “TPM Security” or “Security Chip” → Enable/Disable. Conclusion: A Fossil of the Trusted Computing Era The ACPI IFX0102 isn’t malware, a phantom device, or an error. It’s a 1.2 Trusted Platform Module from Infineon, buried in the ACPI tables of late-2000s laptops. For its time, it was cutting-edge — hardware root of trust for BitLocker and measured boot. Today, it’s a legacy component: too slow for modern security demands, vulnerable to ROCA if unpatched, and excluded from Windows 11 entirely. dmesg | grep -i tpm ls /dev/tpm* sudo

PNP0C31 is the official Plug-and-Play ID for a TPM. So IFX0102 is Infineon’s vendor-specific HID, while PNP0C31 is the generic class ID.

Device (TPM)