Screen brightness broken (Sierra 10.12.4 beta 3)

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

  1. Warrior_ny macrumors newbie


    Sep 19, 2017

    Thank you MisutaaUrufu! It's working now :):):)

    Step 1.
    Download the combo:

    Step 2.
    Download Pacifist:

    Step 3.
    Use pacifist to open the combo go to the folder /System/Library/Extensions right click on it and install AppleBacklight.kext and AppleBacklightExpert.kext to their default location.

    Also go to /System/Library/PrivateFrameworks and install to the default location DisplayServices.framework

    Step 4.
    Restart and voila!
  2. nabilzhafri macrumors newbie


    Jun 15, 2017
    OMG you guys are a life saver!! Gonna try it soon! Been waiting for this fix for quite sometime.

    Btw, since high Sierra is coming out soon, anyone can confirm if the fix will also work fine on high Sierra?
  3. Essometer macrumors newbie

    Jul 31, 2012
    i heard this kills NightShift, do you no anything about this?
  4. metatext macrumors newbie

    Mar 28, 2017
  5. Pet2k macrumors newbie


    Sep 22, 2017

    I`ve found this thread after encountering the brightness issue myself. So this method seems to be working but i can`t try it out that easily because of my bad internet connection (DSL2000... What year is it?).
    Because of that I wanted to ask if somebody could provide me the needed kext files. This would help me out so much!

    Thanks in advance :)
  6. Essometer macrumors newbie

    Jul 31, 2012
  7. Pet2k macrumors newbie


    Sep 22, 2017
  8. ZephyrSong5 macrumors newbie


    Oct 1, 2017
    Yeah everything works on High Sierra 10.13. Thanks guys!
  9. son_bananana macrumors newbie

    Oct 26, 2017
    stopped working after 'macOS High Sierra 10.13 Supplemental Update' though
  10. son_bananana macrumors newbie

    Oct 26, 2017
    Also, now every time I close my MacBook and open it again, the screen is pitch black and I can't turn the brightness on, so I have to manually shut down and restart the laptop. Does anyone else have this problem?
  11. ZephyrSong5 macrumors newbie


    Oct 1, 2017
    Still working here...
  12. frazras, Nov 5, 2017
    Last edited: Dec 18, 2017

    frazras macrumors newbie


    Nov 5, 2017
    I have zipped the relevant files here. Just drop them in their respective paths:
    Zip File:

    /System/Library/Extensions for AppleBacklight.kext and AppleBacklightExpert.kext
    /System/Library/PrivateFrameworks for DisplayServices.framework

    You may not have access to replace them, so you may have to restart, and while rebooting, press the command button and R. Then from the utilities menu, choose terminal. then type
    csrutil disable

    restart and install these files in their location, restart again, while pressing command R, open terminal again and type in

    csrutil enable

    then restart into regular mode and hopefully you should be fine.
  13. Essometer, Nov 16, 2017
    Last edited: Nov 17, 2017

    Essometer macrumors newbie

    Jul 31, 2012
    Same problem after updating to 10.13.1. God ****ing damit.

    EDIT: Installing the 10.13.1 combo Update and applying the patch again worked.
  14. msephton macrumors 6502


    Jan 6, 2004
    Cornwall, UK
    I have a similar issue on 10.13.4 with an old Apple Cinema HD Display and an early 2013 rMBP in clamshell mode via an external keyboard. Sometimes when I wake the Mac the brightness keys have no effect. Brightness buttons on monitor work but on screen feedback always shows 50% brightness.

    My workaround is to go into activity monitor and force quit corebrightnessd a few seconds later the system will relaunch it automatically and brightness keys work once again.
  15. Husain Alfraid macrumors newbie

    Husain Alfraid

    Jun 8, 2018
    after i updated to High Sierra, my iMac display stopped working, only black screen. i did all kinds of reset, then i had to replace my display hardware i thought it it blew up, or maybe did. after that when i fixed it the brightness adjustment doesnt function. the monitor has the same brightness even when the slider/dots go up and down. it happened the after few hours from using the new software.

    i dont know what to do, i jsut hopw my iMac doest break down, yestersay i saw a blue line in my screen and only went away after another rest

    looking for an answer to fix the issue, i cant work on a dark screen like this!
  16. meetjasper macrumors newbie

    Jun 22, 2018
    Hi, I already have these files and still brightness is not working.
  17. LlamaFiuff macrumors newbie

    Jul 29, 2018
    Thank you!!! I literally just created an account to thank you. Mojave beta on my MBP 2018 15" seemed to of broken the brightness slider on my touchbar and your solution is working for now.
  18. godliness1871 macrumors newbie

    Jul 29, 2018
    It seems that this new update was to force Old Computer Users into updating their old models. Apple knows exactly what they are doing, these are no longer glitches. It's 2018, time to wake up, look up and verify.
    --- Post Merged, Jul 29, 2018 ---
    Which systems are safe these days?
  19. Zxiit macrumors newbie


    Sep 29, 2018
    The patch of @dosdude1 for the screen brightness worked perfectly until "High Sierra 10.13.6" :) but in "Mojave 10.14" Kernel error :(.

    Does anyone have any solution for Mojave?


    Attached Files:

  20. Axeros macrumors member

    Mar 11, 2014
    Thanks for this workaround - it solved a similar problem I was having on a 2012 Mac Mini with Apple TB Display in High Sierra 10.13.6.
  21. imm0rtalz16_2006 macrumors newbie


    Sep 25, 2018
    I installed Mac os mojave on a 20011 MacBook pro but no option for screen brightness... The sound keys work but not the brightness keys or in settings is no option
  22. jasli2 macrumors newbie

    Oct 21, 2018
    Thanks for the script, but I got some error when I run this script:

    Copying "DisplayServices.framework"...
    cp: cannot overwrite directory /System/Library/PrivateFrameworks/DisplayServices.framework/Resources with non-directory /Users/lijc/BacklightPatch/DisplayServices.framework/Resources
    cp: /System/Library/PrivateFrameworks/DisplayServices.framework/Versions/A/_CodeSignature/CodeResources: Operation not permitted
    cp: /System/Library/PrivateFrameworks/DisplayServices.framework/Versions/A/Resources/ Operation not permitted
    cp: /System/Library/PrivateFrameworks/DisplayServices.framework/Versions/A/Resources/Info.plist: Operation not permitted
    cp: /System/Library/PrivateFrameworks/DisplayServices.framework/Versions/A/Resources/version.plist: Operation not permitted

    seems it report some permission issue, any idea? Thanks.
  23. Afrendly Lee macrumors newbie

    Nov 10, 2018
  24. burangulov macrumors newbie


    Nov 13, 2018
    Guys, could someone fix it in mojave?
    How? With the old patch the kernel crashes

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