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Date:      Tue, 03 Sep 2013 23:10:25 -0700
From:      "Ethan W. House" <ehouse@csh.rit.edu>
To:        freebsd-questions@freebsd.org
Subject:   Intel graphics card brightness control issue
Message-ID:  <CAFRryZiFY0Pxh8oomzPPikn7hZ34F8N6smw-3BCDnDGHvas_Bw@mail.gmail.com>

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What could be causing my brightness control to not work on my Intel
graphics card. The acpi values change but no effect takes place.

ehouse@derpy ~ $ sudo sysctl hw.acpi.video.lcd0.brightness=50
hw.acpi.video.lcd0.brightness: 100 -> 50
ehouse@derpy ~ $ sudo sysctl hw.acpi.video.lcd0.active=1
hw.acpi.video.lcd0.active: 0 -> 0

I also have an issue were upon resume by machine reboots. I believe the two
might be related but I am not sure.

I found a couple of other email chains with similar issues but most of them
have been inactive for more then a year.

---
Ethan House



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