While the Ryzen CPUs have been available for a few months now and the higher-wattage Threadripper and EPYC processors are now available too, the Linux thermal driver remains missing in action and it’s looking less likely that it will materialize for Linux 4.14…

Source: Phoronix – It Doesn’t Look Like A Ryzen/EPYC Thermal Driver Will Make It For Linux 4.14