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Date:      Tue, 2 Mar 2004 10:01:56 -0800
From:      "Grover, Andrew" <andrew.grover@intel.com>
To:        <acpi-jp@jp.FreeBSD.org>, "Nate Lawson" <nate@root.org>
Cc:        current@freebsd.org
Subject:   RE: [acpi-jp 3093] Re: Update on ACPI with FreeBSD CURRENT on ThinkPad T30
Message-ID:  <F760B14C9561B941B89469F59BA3A8470255F036@orsmsx401.jf.intel.com>

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> From: owner-acpi-jp@jp.FreeBSD.org=20
> [mailto:owner-acpi-jp@jp.FreeBSD.org] On Behalf Of Randy Bush
> > Try using the sysctls from the new acpi_video module to turn off the
> > backlight, perhaps by turning the brightness way down.
>=20
> i am on a t40p and have tried a lot of this to no avail.

My understanding is that actually turning off the backlight is not done
via _BCM. But, I still don't know exactly how it *is* done. _PS3 might
do it, but some people have hinted that this is something that the video
driver is supposed to know how to do.

Regards -- Andy



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