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From: Nate Lawson <nate@root.org>
To: "M. Warner Losh" <imp@bsdimp.com>
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Date: Tue, 30 Mar 2004 14:38:56 -0800
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Subject: [acpi-jp 3171] Re: acpi_panasonic: ACPI hotkey driver for
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On Tue, 30 Mar 2004, M. Warner Losh wrote:
> In message: <20040330125842.U82732@root.org>
>             Nate Lawson <nate@root.org> writes:
> : >   Fn+F1, Fn+F2: Make LCD backlight darker/brighter
>
> Anybody know how I can do this on a Sony?

Try loading acpi_video.  That's the driver for the standard way of doing
this.

> I've hit a small snag on the sony:
>
> % sudo acpidump -d
> Segmentation fault (core dumped)
> %

It appears there are other systems that have problems dumping the RSDP.
Getting a stacktrace is a first step.  One thing on my todo list is to
compare our method of searching for the RSDP to Linux.  They recently made
changes in their approach to avoid some low mem regions.

http://www.root.org/~nate/freebsd/acpi-todo.html

-Nate
