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Date: Tue, 11 Feb 2014 20:02:31 +0100
From: =?ISO-8859-1?Q?Jean-S=E9bastien_P=E9dron?= <dumbbell@FreeBSD.org>
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To: freebsd-x11@freebsd.org
Subject: Re: Is it known problem, that WITH_NEW_XORG/WITH_KMS is incompatible
 with acpi_video and lefts user without ability to change brightness
 on Laptop?
References: <1608537932.20140209192256@serebryakov.spb.ru>
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Le 09/02/2014 16:22, Lev Serebryakov a écrit :
> Is here any way to control brightness in such case?

You could use xrandr(1):
   xrandr --output $OUPUT_NAME --brightness 0.7
where $OUTPUT_NAME is the name of the output. You can query all outputs 
by running xrandr(1) without any argument.

-- 
Jean-Sébastien Pédron