Hi list and Michael -

I received a T470s at work and decided to jump into the CURRENT end of the
FreeBSD pool. I have a weird acpi_ibm issue and I'm not sure where to start
trying to diagnose the issue.

# uname -a
FreeBSD spanner 12.0-CURRENT FreeBSD 12.0-CURRENT #0 r328126: Thu Jan 18
15:25:44 UTC 2018     r...@releng3.nyi.freebsd.org:/
usr/obj/usr/src/amd64.amd64/sys/GENERIC  amd64

I've loaded acpi_ibm via /boot/loader.conf:

and the module shows as being loaded:
# kldstat | grep acpi_ibm
8    1 0xffffffff8278e000 7570     acpi_ibm.ko

However, I don't have any of the sysctl knobs available; e.g.
# sysctl -a | grep acpi_ibm

 # sysctl dev.acpi_ibm.0.fan_speed
sysctl: unknown oid 'dev.acpi_ibm.0.fan_speed'

I've (tried) to look through the commit messages on svn-src-head, but I'm
not seeing anything specifically related to acpi work, or I just don't know
what I'm looking at (a definite possibility).

Would someone be able to provide a bit of debugging direction here?
Reviewing `dmesg -a` doesn't tell me anything specific about acpi_ibm.

Thanks in advance for your time and trouble.
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