Linux

  1. Bug #1690085
  2. Comment #672

Comment 672 for bug 1690085

Revision history for this message
In , i (i-linux-kernel-bugs) wrote :

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