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To: nate@root.org
Cc: acpi-jp@jp.FreeBSD.org, t-ogawa@triaez.kaisei.org
From: "M. Warner Losh" <imp@bsdimp.com>
In-Reply-To: <20040330143334.G83277@root.org>
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Date: Tue, 30 Mar 2004 16:07:34 -0700
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Subject: [acpi-jp 3173] Re: acpi_panasonic: ACPI hotkey driver for
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In message: <20040330143334.G83277@root.org>
            Nate Lawson <nate@root.org> writes:
: 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.

It doesn't attach.

: > 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

We are dying when we look for the RSDP, for what it is worth.

Warner
