Created attachment 282319 Threadripper 2920x soft lockup I've went through this thread, and tried to disable c6 state, add idle=halt with no effect. Followed this excellent reprod steps in https://www.reddit.com/r/Amd/comments/apw8im/ryzen_freezes_in_linux_even_if_linux_is_in_vm/ It is pretty consistent. However, switching to gcc-8 seems resolved this for this particular reprod steps. With dmesg -w, I was able to capture and verify this is indeed a soft lockup. Attached the dmesg output.
It is a Threadripper 2920x with MSI x399 Gaming Pro Carbon AC with latest BIOS on Ubuntu 18.04.2 LTS. Linux sz77 4.15.0-47-generic #50-Ubuntu SMP Wed Mar 13 10:44:52 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux -- 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 [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
