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Date: Fri, 19 Jan 2018 18:22:43 -0800 (PST)
From: Don Lewis <truckman@FreeBSD.org>
Subject: Re: Ryzen issues on FreeBSD ?
To: Mike Tancsa <mike@sentex.net>
cc: Lucas Holt <luke@foolishgames.com>, owner-freebsd-stable@freebsd.org,
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On 19 Jan, Mike Tancsa wrote:
> On 1/19/2018 6:16 PM, Don Lewis wrote:
>>>
>>> 0(ms-v1)# kldload amdtemp
>>> 0(ms-v1)# dmesg | tail -2
>>> ums0: at uhub0, port 3, addr 1 (disconnected)
>>> ums0: detached
>>> 0(ms-v1)#
>> 
>> What FreeBSD version are you running?  It looks like the amdtemp changes
>> for Ryzen are only in 12.0-CURRENT.   It looks like r323185 and r323195
>> need to be merged to stable/11.
> 
> releng11. It seems amdsmn is needed as well

That sounds right.