Screen brightness broken (Sierra 10.12.4 beta 3)

Discussion in 'macOS Sierra (10.12)' started by Kaardan, Feb 20, 2017.

  1. Kaardan macrumors newbie

    Kaardan

    Joined:
    Jul 5, 2016
    #1
    Hello. Can somebody help me. I have mbp pro late 13... Installed beta 3 and my screen brightness adjustment is broken. When I try to adjust brightness nothing happens... only visual changes in brightness controller
     
  2. ajay96 macrumors 6502

    Joined:
    Jul 29, 2013
    #2
    Any luck if you try to do it from System Preferences under Display?

    It seems to be working fine for me on the same beta.
     
  3. Kaardan thread starter macrumors newbie

    Kaardan

    Joined:
    Jul 5, 2016
    #3
    Nope.. same result..
    [​IMG]
    On Sierra 10.12.3 all works perfectly.
     
  4. Kaardan thread starter macrumors newbie

    Kaardan

    Joined:
    Jul 5, 2016
  5. EnesM macrumors 6502

    EnesM

    Joined:
    May 7, 2015
    #6
    I was wondering if you found a fix for this. I just updated to 10.12.4 (final) and I got the same issue...
     
  6. Kaardan thread starter macrumors newbie

    Kaardan

    Joined:
    Jul 5, 2016
    #7
    Nope. Yesterday I spoke with Apple Support. They recommend me fresh install. That's all Today I created a back up and after work try to fresh install. I reply here if this helped me.
     
  7. idoo, Mar 29, 2017
    Last edited: Mar 29, 2017

    idoo macrumors newbie

    idoo

    Joined:
    Mar 29, 2017
    #8
    I had same issue - macbook 10,1

    @Kaardan can you please give some feedback after install? They where recommend me same step =\
     
  8. Kaardan thread starter macrumors newbie

    Kaardan

    Joined:
    Jul 5, 2016
    #9
    So guys one more moment... I did fresh install 10.12.3 and brightness controller work perfect, after I download update to 10.12.4 MAS. So, what did you think? Right - brightness broke. Let's try fresh install of 10.12.4 eta 40 minutes. I really mad now.
    --- Post Merged, Mar 29, 2017 ---
    So. Fresh install 10.12.4 - brightness not work. Now I even don't have a word.
     
  9. Kaardan thread starter macrumors newbie

    Kaardan

    Joined:
    Jul 5, 2016
    #10
    Update: I spoke with Apple Support one more time. Capture and send them all data and screens... SO
    "It appears to be a software issue, with the way we isolated it, if it's a bug it's something that could be fixed in an update but there's still a chance of a setting causing it that can be changed.

    Yes, I will keep in contact, I will be the first ot know of changes or responses from engineering. Apologies for the response time, i'm writing up all the details, every little thing you tried and tested has to be detailed exactly."

    For now use 10.12.3. That's all guys. Stay frosty.
     
  10. idoo macrumors newbie

    idoo

    Joined:
    Mar 29, 2017
    #11
    Sad to hear it :(

    I found temporary solution for 10.12.4 — Brightness Slider from app store works for me
     
  11. idoo macrumors newbie

    idoo

    Joined:
    Mar 29, 2017
    #12
    Which model do you have? I have macbook pro 10,1
     
  12. Kaardan thread starter macrumors newbie

    Kaardan

    Joined:
    Jul 5, 2016
    #13
    Thank's for you temporary solution) I have pro 11,1
     
  13. idoo macrumors newbie

    idoo

    Joined:
    Mar 29, 2017
    #14
    Looks like my EDID doesn't recognised anymore :(

    ioreg -l -x -w0 | grep DisplayProductID
    | | | | "DisplayProductID" = 0x717
    ioreg -l -x -w0 | grep DisplayVendorID
    | | | | "DisplayVendorID" = 0x756e6b6e
    ioreg -l -x -w0 | grep IODisplayPrefsKey
    | | | | "IODisplayPrefsKey" = "Alias:0/AppleBacklightDisplay-756e6b6e-717"
    ioreg -lw0 | grep IODisplayEDID
    | | | | "IODisplayEDID" = <00ffffffffffff00000000000000000000000104a5211578026fb1a7554c9e250c505400000001010101010101010101010101010101ef8340a0b0083470302036004bcf1000001a000000fc00436f6c6f72204c43440a20202000000010000000000000000000000000000000000010000000000000000000000000000000d1>​
     
  14. Kaardan, Mar 30, 2017
    Last edited: Mar 30, 2017

    Kaardan thread starter macrumors newbie

    Kaardan

    Joined:
    Jul 5, 2016
    #15
    Can You tell me... The screen changed (repaired)?

    I have same Product ID and Vendor
     
  15. idoo macrumors newbie

    idoo

    Joined:
    Mar 29, 2017
    #16
    Kaardan, yep, I did one year ago

    looks like we have `LP154WT1-SJAV` display
     
  16. Kaardan, Mar 30, 2017
    Last edited: Mar 30, 2017

    Kaardan thread starter macrumors newbie

    Kaardan

    Joined:
    Jul 5, 2016
    #17
    I sent all info to apple engineer. Hope this help.
     
  17. idoo macrumors newbie

    idoo

    Joined:
    Mar 29, 2017
    #18
    can you please share your AppleBacklightExpert.kext from `/System/Library/Extensions/`
     
  18. Kaardan thread starter macrumors newbie

    Kaardan

    Joined:
    Jul 5, 2016
  19. idoo macrumors newbie

    idoo

    Joined:
    Mar 29, 2017
    #20
    it's exactly what I need!

    Looks like they update this kext in x.4, it's my last chance
     
  20. Kaardan thread starter macrumors newbie

    Kaardan

    Joined:
    Jul 5, 2016
    #21
    And my too)
     

    Attached Files:

  21. idoo macrumors newbie

    idoo

    Joined:
    Mar 29, 2017
    #22
    didn't help for me :(
     
  22. metatext macrumors newbie

    Joined:
    Mar 28, 2017
    #23
  23. idoo macrumors newbie

    idoo

    Joined:
    Mar 29, 2017
    #24
    Nice ti
    ps, but as I understood you're trying to solve keyboard brightness, but we're talking about screen :(
     
  24. metatext, Mar 31, 2017
    Last edited: Mar 31, 2017

    metatext macrumors newbie

    Joined:
    Mar 28, 2017
    #25
    @idoo if you click on the link and read what it is referencing it will become clear. Hint: the bug seems to center around the Ambient Light Sensor and its settings.
     

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