I too still have random computer shutdowns without logs. Uptime varies from a couple days to a week or so. It happens it seems after being relatively idle for a long period. I do have high memory usage because of the VMs I run.
I've disabled C-states, cool and quiet, tested memory, and so forth. I also compiled a new kernel as mentioned by Stuart. I do not have segfaults with compilations. I am willing to run tests and provide info. Please let me know if anyone wants something. Ubuntu 16.04 Asrock x370 ITX 32GB Ram Ryzen 1700 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1690085 Title: Ryzen 1800X freeze - rcu_sched detected stalls on CPUs/tasks To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/1690085/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs