AMD fixed the problem of freezing systems on Windows 10 and 11 with fTPM enabled a month later. This is a trusted computing software module for the AM4 platform with Ryzen processors. The company released an update to the AGESA libraries and gave advice on a workaround to solve the problem.
AMD has released a BIOS fix for motherboard manufacturers. However, it will take some time for the updates to hit the market, with the first coming only in May 2022. In the meantime, AMD has suggested a "workaround" that uses a discrete TPM key instead of a built-in version within the processor. It is worth noting that this method is not suitable for all systems, especially for laptops.
To use the fTPM trusted computing feature, the AMD processor calls an immutable secure key from the BIOS block. As noted by the company, in the first firmware implementation for a number of system configurations, AMD Ryzen processors “may intermittently execute fTPM-related extended memory transactions in the SPI flash memory (SPIROM) located on the motherboard, which can lead to temporary pauses in interactivity or the response of the system before the completion of the transaction. The issue affects AM4 systems using Zen+ to Zen 3 architectures. Most users simply disabled the TPM requirement in Windows 11 to work around this issue.
To address the shortcoming, AMD has provided motherboard manufacturers with updated libraries. Motherboard software will be based on AMD AGESA 1207 or newer.
To solve the problem now, you need to purchase a discrete TPM 2.0 module and switch to using it. The fTPM feature is disabled in the BIOS, and the TPM 2.0 physical module will take control. However, the module itself is not cheap (costs range from $20 to $170), and not all motherboards and laptops have the appropriate connectors and support for installing them.
Finally, when transferring data when switching from the fTPM feature to the TPM module, the files may be corrupted. AMD recommends that you back up your data prior to switching and migrate with encryption mechanisms disabled. The same will need to be done when updating the BIOS of motherboards.
In June, Microsoft introduced a requirement in Windows 11 that prevents any system without Trusted Platform Module (TPM) 2.0 technology from installing the OS. Windows 11 requires either a physical TPM key or fTPM support. This requirement caused a rapid increase in sales and a sharp increase in prices for TPM 2.0.
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