linux-kernel - Re: [PATCH] hwmon: (dell-smm-hwmon) Disable BIOS fan control on SET

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Message-ID: <511eaace-6615-2bf0-9872-48f888353833@debian.org>
Date:   Sat, 16 Nov 2019 18:14:53 +0100
From:   Giovanni Mascellani <gio@...ian.org>
To:     Pali Rohár <pali.rohar@...il.com>
Cc:     Jean Delvare <jdelvare@...e.com>,
        Guenter Roeck <linux@...ck-us.net>,
        linux-hwmon@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] hwmon: (dell-smm-hwmon) Disable BIOS fan control on
 SET_FAN

Il 16/11/19 16:03, Pali Rohár ha scritto:
> In my old notes I have written these two comments:
> 
> 0x30a3  disable the Fn- key combinations (except the volume functions) key and disable BIOS auto fan control (no args)
> 0x31a3  enable the Fn- key combinations (except the volume functions) key and enable BIOS auto fan control (no args)

This does not seem to happen on my laptop: both command pairs set and
unset auto fan control, without other apparent effects. However, I have
dropped 0x30a3 and 0x31a3, since 0x34a3 and 0x35a3 are known to work on
all laptops where at least one command pair is known to work, and there
are no known side effects.

Giovanni.
-- 
Giovanni Mascellani <g.mascellani@...il.com>
Postdoc researcher - Université Libre de Bruxelles



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