[plug] AMD Machine Check errors

[Marcos Carot]

I had similar issues a few years ago on a Gigabyte x370 motherboard, and if
my memory is correct, I did something similar to these posts:

https://wiki.archlinux.org/title/Ryzen#Random_reboots

https://null-src.com/posts/amd-ryzen-linux-freeze/

and it fixed it.

Cheers,
Marcos


On Fri, 24 Oct 2025 at 20:40, Brad Campbell <brad at fnarfbargle.com> wrote:

> On 24/10/25 20:33, Chris McCormick wrote:
> > On 24/10/2025 20:07, Brad Campbell wrote:
> >> I've replaced the CPU, the RAM and the PSU.
> >
> >
> > This may be a stupid suggestion, but years ago we had a server that was
> randomly rebooting. After a lot of debugging we finally figured out it was
> the actual power cord that wasn't plugged all the way into the PSU.
> Absolute face-palm moment. You said you changed the PSU, but did you change
> the power cord? Are you sure the wall outlet doesn't have issues? Long shot
> I know.
> >
>
> G'day Chris,
>
> Thanks, but done that. It was plugged into a powerboard that was plugged
> into a PDU that was plugged into an ATS that was plugged into a UPS which
> was plugged into the wall.
> I bypassed most of that and plugged it directly into the ATS, and then UPS
> as a test.
>
> The clincher is reboots were *always* logged (remote UDP netconsole
> receiver).
> On top of that there are several SED drives in the machine, so any form of
> power cycles they come up locked. That never happened.
>
> Most of the faults with the 3950x were related to panics in the idle
> handler. Rarely I got a straight segfault.
>
> I'm almost positive it's a glitch with the motherboard or BIOS, but it's
> interesting the 5950x logs MCEs rather than causes a panic.
> My next move is to upgrade to an X570 board. I'd upgrade to a new AM5
> platform, but new board/processor/RAM starts to get $$$ and what I have
> mostly works.
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-- 
Marcos R Carot
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