Comment 765 for bug 1690085

I've been facing the same issue since I've bought this machine and setting my BIOS power settings to "Typical current idle" has only partially fixed things (the system still crashes every 1-2 weeks during idle: I leave my desk, screensaver fires up, then screens go to sleep, and by the time I get back to my desk, the system no longer responds to any input and the only option is a hard reset.).

At the time of writing, I can't tell if the AGESA version has made it into my motherboard: https://www.asrock.com/mb/AMD/X399M%20Taichi/index.asp#BIOS

But I'd be willing to give this a try. I also just yesterday requested an RMA from AMD though: I spoke to their support and they asked me to try setting the power settings in the BIOS settings. Once I reported back that the power settings only reduced the frequency of these crashes, their immediate response was to open an RMA request. It seemed like they were aware of the issue and they seemed quite confident that an RMA will fix this (I sure hope so since the RMA means at least 2 weeks of downtime for me).