Ok, after updating to the latest BIOS the issue seems resolved for me. I'm now also at an uptime of over 3 weeks, and before I could never get past 1 week. I've updated the BIOS of my ASRock AB350 Pro4 AMD B350 to 3.20 with AGESA 1.0.0.6b.
I am currently running kernel 4.14.5 with CONFIG_RCU_NOCB_CPU and boot option "rcu_nocbs=0-15". My System is a Ryzen 7 1700X on ASrock AB350 Pro4 with 32GB Ram @3200. -- 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