Function keys from f1 to f12 do not work. Macbook air 2015

Discussion in 'MacBook Air' started by albertoo85, May 11, 2019.

  1. albertoo85 macrumors newbie

    Joined:
    Nov 14, 2017
    #1
    I have a newly purchased 13 '' MacBook Air 2015, and now the function keys that must control the volume up / down / silence and brightness do not work.
    When I press any of them, I get an error sound and nothing happens. Things I've tried:

    -Mark / unmark "use the F1, F2, etc. keys as standard function keys". Even when checked, pressing 'fn' and the function key does not work.
    -Display the shortcut keys for the Mission Control (when it is activated, the F10 key will show the desktop)
    -Zapping PRAM
    - Beginning in safe mode
    -Restate OSX keyboard shortcut settings to default
    - External monitor unplugged and mouse.
    -Reset SMC
    -Proved external keyboard and same behavior

    All software / OS updates are installed
    Running OSX Mojave 10.14.4

    I would appreciate any help!

    Thank you!
     
  2. Audit13 macrumors 601

    Audit13

    Joined:
    Apr 19, 2017
    Location:
    Toronto, Ontario, Canada
    #2
    If this unit is brand new, take it back to the vendor if possible.

    Has it always behaved this way?

    Have you tried a clean install of the OS?
     
  3. albertoo85 thread starter macrumors newbie

    Joined:
    Nov 14, 2017
    #3
    It is a used United of 2015, but very new state.
    Attempt to format from 0 and reinstall
     
  4. Audit13 macrumors 601

    Audit13

    Joined:
    Apr 19, 2017
    Location:
    Toronto, Ontario, Canada
    #4
    Since the same thing happens with an external keyboard, hopefully, re-installing the OS will fix the issue.
     
  5. albertoo85 thread starter macrumors newbie

    Joined:
    Nov 14, 2017
    #5
    Hi,

    I have tried to format and install new osx and other reinstallation of OSX on it and no solution

    Rgds
     
  6. Audit13 macrumors 601

    Audit13

    Joined:
    Apr 19, 2017
    Location:
    Toronto, Ontario, Canada
    #6
    A clean installation of OSX was successful and the function keys still don't work?

    Do the function keys on an external keyboard work after a clean installation?
     
  7. albertoo85 thread starter macrumors newbie

    Joined:
    Nov 14, 2017
    #7
    they still do not work after a clean installation and after everything said in em first post. on external keyboard does exactly the same as on the macbook keyboard
     
  8. Audit13 macrumors 601

    Audit13

    Joined:
    Apr 19, 2017
    Location:
    Toronto, Ontario, Canada
    #8
    If you are not using a USB Mac keyboard, the volume, brightness, etc. cannot be controlled with the function keys.
     
  9. albertoo85 thread starter macrumors newbie

    Joined:
    Nov 14, 2017
    #9
    it's an original apple keyboard, confirmed at the system preferences
     
  10. Audit13 macrumors 601

    Audit13

    Joined:
    Apr 19, 2017
    Location:
    Toronto, Ontario, Canada
    #10
    I'm at a total loss as to why this would be happening.

    If the internal keyboard's function keys weren't working, I would not have expected this to prevent an external keyboard's function keys from behaving the same way.

    I would disconnect the internal keyboard but not the trackpad and then try the external keyboard.
     
  11. albertoo85 thread starter macrumors newbie

    Joined:
    Nov 14, 2017
    #11

    I thought the same, to try and fail also with external keyboard.
    The strange thing is that from f1 to f12 they work well in everything except the predefined functions.
    I do not know what else to do, on the 16th I'll go to the apple store, to see what they say

    regards
     
  12. chabig macrumors 603

    Joined:
    Sep 6, 2002
    #12
    I don’t understand what you mean. Each of those keys has only one function. Are you saying they perform as F-keys? If so, you must hold down the Fn key in the lower left corner to get the system functions.
     
  13. albertoo85 thread starter macrumors newbie

    Joined:
    Nov 14, 2017
    #13
    No, what I'm saying is that the keys f1 to f12 work normally in programs like office or photoshop.
    But they do not work as function keys as I explained above
     
  14. albertoo85 thread starter macrumors newbie

    Joined:
    Nov 14, 2017
    #14
    Hey,

    I visited apple store and commented that I had done everything that was recommended and that I thought I had to do a keyboard mapping and in 5 minutes working !!!

    Regards
     

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13 May 11, 2019