From owner-freebsd-acpi@FreeBSD.ORG  Fri Feb 12 18:21:14 2010
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From: Jung-uk Kim <jkim@FreeBSD.org>
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Date: Fri, 12 Feb 2010 13:20:49 -0500
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Cc: Daniel Walter <d.walter@0x90.at>
Subject: Re: Call for testers acpi_dell
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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