> Jeff: Does adding
> Option "RegistryDwords" "EnableBrightnessControl=1"
> to the device section in your /etc/X11/xorg.conf fix it?

Robert, I'm no longer up in the Lexington lab so I can't get hands on
the machine.  I'm adding Marc Legris to this as he is The Man for the
lab up there.

Marc, when you get time, can you look into this for Robert?

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https://bugs.launchpad.net/bugs/773710

Title:
  [Lenovo T420s] Brightness keys make the indicator work, but don't
  actually dim or brighten the screen

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