9 Replies Latest reply: Apr 8, 2014 4:19 AM by IBurchett
athst Level 1 Level 1 (0 points)

For some reason most of the function keys on the top row of my keyboard have stopped working.  It's the function keys from f1 to f9.  The biggest problem is that I can't control the brightness for the computer now, and the display is way too bright.  Oddly enough, the volume controls (f10 - f12) do still work.


I have a 27" iMac from 2009, and use the basic wireless aluminum Apple keyboard that came with it.  Snow Leopard (10.6.8).


Before I ran into a similar problem where it wouldn't let me control the brightness when the iMac was in target display mode with my MacBook Air - but after restarting the iMac, it would work again.  But this time, restarting the computer did not help.


Things that I've tried based on tips that I've seen in other threads:

  • restarting the computer
  • resetting PRAM
  • restarting the keyboard
  • removing and re-pairing the keyboard
  • re-mapping the function controls (brightness, etc) to different keys
  • installed all software updates


None of these things have helped, I still can't control the brightness and it's burning my eyes.


For what it's worth, I can't even get the functions to activate when I use the on-screen keyboard, which makes me think that this is a software problem rather than a problem with a keyboard.  But I'm not sure if you're supposed to be able to use the functions from the on-screen keyboard in the first place, so I wasn't sure if this mattered.


Any ideas on what could be causing the problem or how to fix it?

iMac, Mac OS X (10.6.8)
  • 1. Re: iMac function keys stopped working (f1-f9)
    Don Archibald Level 10 Level 10 (101,155 points)

    Do they work if you hold down the Fn key while pressing the F1, etc. keys?


    If they do, go to System Preferences > Keyboard > Keyboard and uncheck the item "Use all F1, F2, etc. keys as standard function keys".

  • 2. Re: iMac function keys stopped working (f1-f9)
    athst Level 1 Level 1 (0 points)

    I tried toggling that a few times but it didn't help.  I think I might just have to get a new keyboard to see if that solves it.

  • 3. Re: iMac function keys stopped working (f1-f9)
    IkeMcfadden Level 1 Level 1 (0 points)

    I'm havin the exact same problem.  Seemed to start (shockingly!) with the last OSX update that included the Flashback Java fix in mid-March.


    Unfortunately, I don't think you'll find getting a new keyboard helps. I have 3 different Apple Aluminum Wireless Keyboards.  I have connected all of them, sequentially, to my iMac 27". 


    All have the exact problem.  And none of them have similar problems when I connect them to my MacBook Pro.


    And on all of them...the function keys magically swapped to various random roles.  The volume key now displays the dashboard widgets, for example.


    So, no...it's not just you.  If you look at the forums, you will see lots of people with this problem. 


    And of course, Apple manages to remain silent. 



  • 4. Re: iMac function keys stopped working (f1-f9)
    athst Level 1 Level 1 (0 points)

    Thanks - changing the keyboard didn't help me either.  My problems started with the recent updates also.  When I originally posted I searched the forums and couldn't find anything recent, so it's good to have some confirmation that it's not just me.


    Let's hope a fix is coming soon.

  • 5. Re: iMac function keys stopped working (f1-f9)
    iMac2009 c Level 1 Level 1 (0 points)

    I have had the same problem for some time so if you have been able to find a solution I would love to hear it.

  • 6. Re: iMac function keys stopped working (f1-f9)
    kiminfl Level 1 Level 1 (45 points)

    Same exact problem here... my volume keys haven't worked for several months -- and now none of the top row keys work (some used to).. I can't quite narrow it down to a certain update, but that makes sense to me..


    I'm getting ready to call Apple Care -- I can't deal with it anymore.. but after reading these posts, I'm guessing they won't have an answer for me??

  • 7. Re: iMac function keys stopped working (f1-f9)
    raver1002 Level 1 Level 1 (0 points)

    i had the same problem. i had another media program working in the backround (spotify). once i closed that program the buttons worked. try closing your other media programs one by one and try the buttons again. Hope this helps ^_^

  • 8. Re: iMac function keys stopped working (f1-f9)
    digitalbetts Level 1 Level 1 (0 points)

    I was havinga  similar problem where the F keys were doing crazy things. F12 was moving all the windows off the screen and displaying the desktop, F11 was showing the widgets panel.


    I found the problem by going to system preferences/ keyboard/ and unchecking

    "Use all F1,F2, etc. keys as standard function keys".


    Probably a simple solution unrelated to others problems but is what brought me to this page and thought it may help others.

  • 9. Re: iMac function keys stopped working (f1-f9)
    IBurchett Level 1 Level 1 (0 points)

    This is exact probem I have - occured out of nowhere!


    F1-9 and Right-Shift not working at all.


    Does anyone have an explanation/solution (two years on!)


    iMac 27" mid-2011