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Have brightness slider but can't change brightness on 27" Cinema Display from iMac

228 Views 0 Replies Latest reply: May 9, 2011 10:19 AM by TGH RSS
TGH Level 2 Level 2 (275 points)
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May 9, 2011 10:19 AM

I know similar issues have been noted many times before, but they usually relate to the user not connecting via USB and not having brightness sliders at all - our issue is slightly different as we ARE connected via USB and the Display Port and we do actually see a brightness slider for the Cinema Display.

 

Our problemn is that the slider will not change the brightness, no matter where we move it.  The monitor is very dim and we want it brighter.  There is no option to select or de-select "Automatically adjust brightness as ambient light changes" - so that does not appear to be the issue.

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