From owner-freebsd-acpi@FreeBSD.ORG  Fri Feb 12 18:50:10 2010
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Date: Fri, 12 Feb 2010 19:33:12 +0100 (CET)
From: Daniel Walter <D.Walter@student.uibk.ac.at>
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To: Jung-uk Kim <jkim@FreeBSD.org>
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Cc: freebsd-acpi@FreeBSD.org, Daniel Walter <d.walter@0x90.at>
Subject: Re: Call for testers acpi_dell
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On Fri, 12 Feb 2010, Jung-uk Kim wrote:

> On Friday 12 February 2010 12:48 pm, Daniel Walter wrote:
>> Hi all,
>>
>> I've written a small kernel driver to support Dell Mini 1011 (aka
>> Dell Mini 10v) Brightness Controll Buttons. Since I do not have any
>> other Dell Notebooks, I'd like you to test this module on other
>> Dell Notebooks as well.
>>
>> This driver is in an early stage, but future releases will also
>> support the rfkill switch and CRT switch.
>>
>> Currently following features are implemented:
>> * Increase / Decrease Brightness
>> * Change brightness if AC is connected / disconnected
>>
>> TODO:
>> * Add CRT Support
>> * Add Sysctl to define brightness levels for eco and ac
>> powerprofile * Add Support for RF-Kill Switch
>>
>> Any suggestions are welcome
>
> I just quickly glanced at it but I failed see anything quite specific
> to Dell laptops except for "TODO: Add support for RF-Kill Switch".
> acpi_video(4) should be able to do what you want.  Am I missing
> something here?
>
> Jung-uk Kim

hi,

Yes it is possible to control the brightness using acpi_video(4) via sysctl but there is no support for the FN-Buttons. This module adds the support for those buttons.

Daniel Walter