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Date: Mon, 3 Sep 2012 17:04:56 -0700
Message-ID: <CAN6yY1tJggN1+CS37DBqRPO=mynwEnNM0xs8K-dhQVLma9RzLQ@mail.gmail.com>
From: Kevin Oberman <kob6558@gmail.com>
To: SicoSico <resuscitated_wael@hotmail.com>
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Cc: freebsd-x11@freebsd.org
Subject: Re: Lenovo Y570 backlight
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On Mon, Sep 3, 2012 at 1:27 PM, SicoSico <resuscitated_wael@hotmail.com> wrote:
> I think this has something to do with changing the brightness level, but I
> can't change its value.
>
> #acpi_call -p '\_SB.PCI0.LPCB.EC0.BRTS' -i 3
> 1
>
> I just want to set the brightness to a minimum value instead of the maximum
> one.

At least on the X220 and T520, the ACPI call is:
acpi_call -p '\VBRC' -i n (where n is 0-16)
-- 
R. Kevin Oberman, Network Engineer
E-mail: kob6558@gmail.com