2024 M3 macbook air - After I put it to "sleep" mode, when I turn it back on, the brightness is super low, and the F1 and F2 keys do not work to adjust the brightness. The only thing that works is restarting my computer. This issue has happened a few times, and I am up to date on the latest software. Any suggestions on how to fix this?
MacBook Air 13″, macOS 14.6
Try going to the Activity Monitor application. Then searching for brightness in the search bar and then clicking on the corebrightnessd process in the search results (so that it gets highlighted blue). Then using the X icon in the top bar to kill and restart it. That fixed it for me. I am on a Macbook Air with M3 chip on Sonoma 14.7.
Try going to the Activity Monitor application. Then searching for brightness in the search bar and then clicking on the corebrightnessd process in the search results (so that it gets highlighted blue). Then using the X icon in the top bar to kill and restart it. That fixed it for me. I am on a Macbook Air with M3 chip on Sonoma 14.7.
This definitely needs to be patched soon. To translate @mb314's solution to a command you can run on the terminal, first open the "Terminal" application and run the following command:
sudo kill -15 $(ps aux | grep corebrightness | awk 'NR==1{print $2}')
Enter user password when prompted.
The brightness slider is grayed out in the Control Center, and the brightness option is missing from System Settings>Displays. This issue started after updating macOS from Sonoma 14.5 to 14.6.1. It happens when the MacBook is asleep for more than 30 minutes. I never had this problem with macOS 14.5.
This worked! But it still seems insane that we’d need to do this regularly on a brand new laptop?!
I'm having the same problem and only since the latest update too!?
exact same. just bought the Macboob Air M3 and already thinking of returning it. I don't want to have to restart the laptop every time I wake it up from sleep in order to adjust the screen brightness.
This is the exact same problem I have been facing since updating to the latest version of Sonoma 14.6.1 on MB M3 chip.
apple please fix this. it is so jarring especially when all my applications are open and I have to reset my computer each time after putting it on sleep. a product worth this much shouldn't be encountering problems like this. deters people from updating your product too
This is happening to me too on M3 MacBook Air 2024 and just did an update on it hopefully it fixes it
This is really unfortunate. I am very upset that it is happening on my 15" Mac Air M3.
I'm having the same problem with the screen on my MacBook Air M3 sometimes being very dim after waking from sleep. The brightness is set to 50% but the actual brightness is more like 20%. I go to Settings and adjust the brightness above 50%. My slider isn't grayed out like some of the others are saying. I then reset the brightness to 50% and everything is OK until this just randomly happens again. It has done it 5-10 times. Auto brightness is off and I'm running Sequoia 15.2. It did it on previous versions of Sequoia too.
The command line fix in Terminal worked for me. Macbook M3, Sonoma 14.7, first noticed this problem about a month ago on a computer that is only a couple of months old. Agree that Apple needs to sort this out quickly. Like many of the other users, I can't see any of the display options that some people used to fix this problem, and the Activity Monitor fix also didn't work for me (not available).
Ditto to this same issue. The brightness option is missing from System Settings>Displays and the brightness slider is grayed out in the Control Center after MacBook Air is in Sleep mode for extended time. This issue started after updating macOS to 14.6.1.
Same here. Would be nice if Apple could chime in about their $1,600 product.
thanks!
Brightness will not increase after waking from sleep
