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Date: Wed, 14 Sep 2016 04:07:35 +0000
From: Alexey Dokuchaev <danfe@FreeBSD.org>
To: Michael Gmelin <freebsdusb@bindone.de>
Cc: freebsd-acpi@freebsd.org
Subject: Re: Patches to acpi_hp
Message-ID: <20160914040735.GA18792@FreeBSD.org>
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On Tue, Jun 30, 2009 at 07:32:09PM +0200, Michael Gmelin wrote:
> Can you send me the output you get when kldloading acpi_hp + the output
> of cat /dev/wmistat0.  It's possible that your laptop doesn't support CMI.
> ...
> it seems like your model doesn't support this feature, sorry.

Hi Michael,

What exactly indicates proper CMI support?  I have a problem with acpi_hp(4)
on ProBook 645 G1 (infamous ``driver bug: Unable to set devclass (class: ppc
devname: (unknown))'' error), but it looks like all GUIDs listed inside the
`acpi_hp.c' are there:

  $ cat /dev/wmistat0 | egrep '95F24279|5FB7F034|2D114B49'
  {5FB7F034-2C63-45E9-BE91-3D44E2C707E4}   1 NO   WMAA NO  NO    AA
  {95F24279-4D7B-4334-9387-ACCDC67EF61C}   1 NO   NO   NO  0x80+ -
  {2D114B49-2DFB-4130-B8FE-4A3C09E75133} 247 NO   NO   NO  NO    BC

Despite that "driver bug" message, /dev/hpcmi gets created, but reading it
yields just a bunch (247 of them, like the number above) of blank lines, and
issuing various sysctl(8) calls also does not work properly.

  $ sysctl dev.acpi_hp.0.hdd_temperature
  dev.acpi_hp.0.hdd_temperature: 4		<-- ??? what units are these?
  # sysctl dev.acpi_hp.0.wlan_enabled=1
  dev.acpi_hp.0.wlan_enabled: 0
  sysctl: dev.acpi_hp.0.wlan_enabled=1: Interrupted system call

./danfe