Ubuntu
linux package

  1. Bug #1690085
  2. Comment #518

Comment 518 for bug 1690085

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

(In reply to JerryD from comment #426)
> I am on Ryzen 2500U Laptop, HP. I am using kernel 4.18.9-200.fc28.x86_64.
>
> The zenstates.py script fails when I try to disable C6. Oh well.
>
> I have kernel parameters: idle=nomwait processor.max_cstate=5
>
> I still get lockup. No BIOS settings available on this mavhine.
>
> Feel pretty hopeless at the moment.

I'm on Ryzen 2500U Laptop as well, HP 15-db0229ur with latest BIOS (F.11 Rev.1 in my case) and latest kernel (something that used to be called 4.19-rc7 on kernel.org). Also have no option of entering BIOS settings available on this machine. Tried putting both kernel parameters AND *successfully* disabling ZenStates.py. Already had massive data loss at least twice. I really, really-really hope this issue won't turn into one of those 10-years-old issues.

AMD did publish an errata report, pointing that this may be fixed at software level (page 63).
https://www.amd.com/system/files/TechDocs/55449_Fam_17h_M_00h-0Fh_Rev_Guide.pdf