Lenovo T470s Questions

[Tomoaki AOKI]

Hi, Michael.
Noticed your previous post after sending mine. :-)

Fallback code for older ThinkPads looks reasonable and gives no new
(not known) regression.

As I don't have new (0x200) ThinkPads (T420 is my latest),
I cannot review and test for new protocol and functionality.
Sorry.

Just FYI, `acpidump -d -t DSDT | fgrep MHKV` on my T420 claims
"Method (MHKV, 0, NotSerialized)" only. So it would go fallback way.

Preferrably, user(s) of latest (i.e, T480) models pops in and report
this worked or not. [Is there one more protocol like 0x300?]


Thanks for your work!


On Fri, 2 Feb 2018 12:38:47 +0100
Michael Gmelin <freebsd at grem.de> wrote:

> 
> 
> 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
> > > _______________________________________________
> > > freebsd-current at freebsd.org mailing list
> > > https://lists.freebsd.org/mailman/listinfo/freebsd-current
> > > To unsubscribe, send any mail to
> > > "freebsd-current-unsubscribe at freebsd.org" 
> > 
> > 
> 
> 
> 
> -- 
> Michael Gmelin
> _______________________________________________
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> https://lists.freebsd.org/mailman/listinfo/freebsd-current
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> 


-- 
Tomoaki AOKI    <junchoon at dec.sakura.ne.jp>