I have a Mac Pro with a 23" ACD and I have recently encountered the problem that Mac OS does not see the monitor as being a cinema display. The brightness keys on my keyboard do not work, nor do the USB ports on the monitor, and when I go to System Preferences, Displays, it does not offer me any brightness controls or anything besides resolution.
Would this be a problem with my computer not recognizing the monitor or with the monitor itself?
Would this be a problem with my computer not recognizing the monitor or with the monitor itself?