Re: kern/53410 (AMD Phenom II shows zero amdtemp0)

[maxv%NetBSD.org@localhost]

Synopsis: AMD Phenom II shows zero amdtemp0

State-Changed-From-To: open->analyzed
State-Changed-By: maxv%NetBSD.org@localhost
State-Changed-When: Thu, 27 Sep 2018 14:40:26 +0000
State-Changed-Why:
This is a hardware problem, given your CPU ID you seem to have had a 550
on which you unlocked cores and got a B50. Unlocking cores breaks the
thermal sensor, see on google, it's a known problem.

I too have an unlocked AMD Phenom II, and I too see the issue.

Try to lock back the cores, you will see envstat works.

If anything, we could explicitly not enable amdtemp0 if the CPU has the
thermal sensor off, but there doesn't seem to be any way to detect that.