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Date:      Mon, 3 Sep 2012 17:04:56 -0700
From:      Kevin Oberman <kob6558@gmail.com>
To:        SicoSico <resuscitated_wael@hotmail.com>
Cc:        freebsd-x11@freebsd.org
Subject:   Re: Lenovo Y570 backlight
Message-ID:  <CAN6yY1tJggN1%2BCS37DBqRPO=mynwEnNM0xs8K-dhQVLma9RzLQ@mail.gmail.com>
In-Reply-To: <1346704065209-5740445.post@n5.nabble.com>
References:  <1342085203648-5726207.post@n5.nabble.com> <201207121653.32046.erichfreebsdlist@ovitrap.com> <1342094808885-5726236.post@n5.nabble.com> <50004AF0.1010400@gmail.com> <1346704065209-5740445.post@n5.nabble.com>

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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



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