As far as I can tell it was solved for me a quite some time ago (on my A485), most probably a by a Bios update (with previously employed kernel updates), and I have not encountered it E459 with newer Ryzen at all.
I have never encountered it on Windows. My thinking is that it was a combination of kernel behaviour with some in early BIOSes and was fixed when both were updated. If you use Desktop and you have latest BIOS I would suggest replacing the motherboard as somebody pointed above. -- 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