Skip navigation

30" Cinema Display, Brightness Icon Stays on, won't adjust

364 Views 0 Replies Latest reply: Oct 29, 2012 5:45 PM by Frank Galli RSS
Frank Galli Calculating status...
Currently Being Moderated
Oct 29, 2012 5:45 PM

Okay I have an odd issue,  my 30" Cinema Display brightness started acting up recently.


The Icon stays on or will flash on and off but the display will no longer adjust ? Not on the display or by keyboard. Nothing seems to help.


It will try to brighten, but then goes complete dim and stays dim to the point the keys will no control the brightness? Then I get the Icon constantly flashing on and off.


Is there a fix for this ? 


Running 10.8.2 with my Mac Pro tower ... nothing has changed as far as I can tell, same set up I have been running for years ?

Anyone heard of this and is there a fix ?

MacBook, OS X Mountain Lion (10.8.2)


More Like This

  • Retrieving data ...

Bookmarked By (0)


  • This solved my question - 10 points
  • This helped me - 5 points
This site contains user submitted content, comments and opinions and is for informational purposes only. Apple disclaims any and all liability for the acts, omissions and conduct of any third parties in connection with or related to your use of the site. All postings and use of the content on this site are subject to the Apple Support Communities Terms of Use.