Add support for 20" display
I need two things.
I need some more information about the displays HID device. To get it open brightness controller and select: "Help -> Gather HID Information". and post the information here.
I also need to know what version of the 20" display it is. The [[http://www.everymac.com/monitors/apple/studio_cinema/specs/apple_cinema_display_20.html| 2003 with acrylic frame ]] or the [[http://www.everymac.com/monitors/apple/studio_cinema/specs/apple_cinema_display_20_2.html|2004 with aluminum frame]].