Re: Lenovo T470s Questions

On Fri, 2 Feb 2018 20:23:32 +0900
Tomoaki AOKI <junchoon_at_dec.sakura.ne.jp> wrote:

> Not 100% sure but possibly some (one?) EisaId are (is) missing in
> ibm_ids definition of sys/dev/acpi_support/acpi_ibm.c.
> Currently it contains "IBM0068" and "LEN0068".
> 
> Run `acpidump -d -t | fgrep EisaId` as root on your T470s and look for
> EisaId something other than...
> 
>   IBM0068
>   LEN0068
>   IBM3780
>   PNP????
> 
> If there's something new, insert them (it) to 
>   static char    *ibm_ids[] = {"IBM0068", "LEN0068", NULL};
> line of sys/dev/acpi_support/acpi_ibm.c, between "LEN0068" and "NULL".
> 
> If there's none, it's over my hand. :-(
> There could be some incompatibility, like struct member change etc.

Hi Tomoaki,

Could you please take a look at this?

https://reviews.freebsd.org/D14103

Thanks,
Michael



> 
> See my web page [1] of part "Note for limitations of ACPI in ThinkPad
> T420" and The FreeBSD Forums' thread noted there [2] for more info.
> Although old, but part of them can be useful.
> 
> [1] http://www.dec.sakura.ne.jp/~junchoon/machine/freebsd-e.html
> [2] https://forums.freebsd.org/threads/26759/
> 
> 
> On Thu, 1 Feb 2018 21:13:05 -0500
> Bridger Dyson-Smith <bdysonsmith_at_gmail.com> wrote:
> 
> > 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.
> > 
> > Thanks in advance for your time and trouble.
> > Bridger
> > _______________________________________________
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> 
> 



-- 
Michael Gmelin