Ryzen issues on FreeBSD ? (with sort of workaround)

[Pete French]

So, having been stable for quite sme time, I have had three lockups on 
my Ryzen in the last week. two were whilst I was in X11, but one 
happened over the weekend whilst I was looged out, and thus I could get 
a screenshot of what was on the console when I got in this morning:

https://www.twisted.org.uk/~pete/ryzen_crash_img_20180810_104231.jpg

Don't know if thats of any help. I noticed a new BIOS came out very 
recently, and I have updated my motherboard to that today, but these 
lockups did happen after quite a long period of stability, which 
surprises me.

-pete.