Help diagnose my Ryzen build problem

[Gary Jennejohn]

On Mon, 27 Aug 2018 20:18:46 +0800
Meowthink <meowthink at gmail.com> wrote:

> Hi Gary,
> 
> On 8/27/18, Gary Jennejohn <gljennjohn at gmail.com> wrote:
> > On Mon, 27 Aug 2018 10:13:10 +0200
> > Phil Norman <philnorm at gmail.com> wrote:
> >  
> >> Hi.
> >>
> >> I have a similar setup: Ryzen 3 and Fatal1ty X370 mini-ITX. I had some
> >> trouble with instability, although my problems weren't panics, but rather
> >> two issues. One was random lockups (with no evidence left in logs), but I
> >> *think* this was down to an inadequately cooled graphics card.
> >>  
> >
> > I had instability problems with my Ryzen 5 - lockups for no
> > apparent reason.  The only recourse waas a hard reset.
> >
> > It turned out that there were two causes
> > 1) old CPU microcode
> > 2) unhandled errate in the CPU
> >
> > I installed the /usr/ports/sysutils/devcpu-data port, which
> > allowed me to install the latest microcode using cpucontrol(8).
> >
> > I also used a shell script called amd_errata.sh provided by one of
> > the FreeBSD committers.  To my shame I can't remember exactly
> > who.  Note that the errata fixups are now part of the kernel in
> > FreeBSD 12.  
> 
> That's kib, who has committed things in that script to both 12 [1] and
> stable/11 [2].
> 
> Unfortunately, that's for Ryzens family 17h model 00h-0fh, whereas my
> Ryzen 5 2400G's model is 11h.
> 

AMD has also relased a Revision Guide for Family 11h.  Lots of
errata listed there, but I didn't look at it closely enough to say whether
any are relevant to lockups.

> On the microcode. It shall be updated through UEFI/BIOS updates. I
> think mine is now PinnaclePI-AM4_1.0.0.4 with microcode patchlevel
> 0x810100b.
> 

Well, I installed the latest BIOS for my ASUS B350M-A also, but it
was no help.  The lockups disappear only after I installed the
latest microde using the port.

> Seems like ... the only thing I can do is sit down and wait?
> 
> >
> > After taking these steps about two months ago I have had no more
> > lockups and the machine runs very stabily.
> >
> > [big snip]
> >
> > --
> > Gary Jennejohn
> >  
> 
> [1] https://svnweb.freebsd.org/base?view=revision&revision=336763
> [2] https://svnweb.freebsd.org/base?view=revision&revision=337235


-- 
Gary Jennejohn