Lenovo T470s Questions

[Rodney W. Grimes]

> 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     root at releng3.nyi.freebsd.org:/
> usr/obj/usr/src/amd64.amd64/sys/GENERIC  amd64
> 
> I've loaded acpi_ibm via /boot/loader.conf:
> acpi_ibm_load="YES"
> 
> 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
> #
> 
> or
>  # 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.

Do you at least get this line in dmesg:
acpi_ibm0: <IBM ThinkPad ACPI Extras> on acpi0

If not then the module did not find the ibm acpi stuff and that
is why none of the other stuff works.

> Thanks in advance for your time and trouble.
> Bridger
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-- 
Rod Grimes                                                 rgrimes at freebsd.org