Some 2018 MacBook Air (and possibly 2018 MacBook Pro) computers may exhibit seemingly random screen flickering, where the entire display backlight blinks and flickers. This can be alarming, since often screen flickering indicates a hardware issue.
But in this case, the MacBook Air screen flickering may actually be software related, and after some investigation it appears the issue relates some specific settings on these new Macs.
While this is likely an uncommon issue, we’ll discuss how to reproduce the screen flickering issue on impacted 2018 MacBook Air hardware, and also a few workarounds that appear to stop it from happening.
Reproducing the 2018 MacBook Air Screen Flickering
If you have a 2018 MacBook Air that is impacted by the screen flickering issue you have probably already observed it by now, as the display flickers in a non-subtle manner. If not, and you want to test for this on you particular 2018 Mac laptop, here are three different ways to reproduce the problem:
- Shine a flashlight near the front-facing camera where the ambient light sensor is located near the top of the display, then wave the flashlight around a bit so that the bright light is hitting the sensor sporadically (you can use the iPhone flashlight)
- OR: Take the MacBook Air into a brightly lit room, for example where sunlight will reflect on the display. While there is a reflection on the screen, turn the brightness to about half, then crank the brightness all the way to the maximum setting
- OR: In a brightly lit room where a light reflection will be cast on the MacBook Air display, turn the brightness up all the way, then open and close the lid (don’t close the lid all the way to cause sleep) or pick up the laptop and wave it around so that the reflection is moving around on the display glass
I personally can reproduce the screen flickering consistently with a flashlight shining off and onto the top of the display, and with the brightly lit room and glare approaches on a 2018 MacBook Air (BTO w/ 16GB RAM 512GB SSD).
Obviously having a display flicker off and on with a brand new Mac is not particularly encouraging, as often display and screen flickering can indicate a hardware issue. But after some investigation it appears this might actually be software related and not a hardware problem at all (nonetheless if you are concerned about a hardware problem, contacting Apple may be wise. A new 2018 MacBook Air or Pro is likely covered the standard Apple warranty, so reaching out Apple support is a valid consideration).
2 Workarounds to Stop 2018 MacBook Air Screen Flickering
There are two possible workarounds to the screen flickering issue that are worth trying, both of which suggest this could be a software issue rather than a problem with the display hardware or any other hardware component. Note that neither resetting SMC on the 2018 MacBook Airnor resetting PRAM / NVRAMon the machine has any effect on resolving the display flicker. So what does?
1: Use the Default “Color LCD” Display Profile
If you use a custom calibrated display profileon the 2018 MacBook Air, try using the default “Color LCD” display profile instead. You can change this setting in the ‘Color’ section of the “Displays” preference panel, found in System Preferences.
Now try reproducing the screen flicker with the flashlight or screen glare method as discussed above.
2: Disable ‘Automatically Adjust Brightness’
Disabling ‘Automatically Adjust Brightness’on the MacBook Air seems to stop the screen flickering from happening, regardless of any bright lighting or screen glare, or using the flashlight method discussed above.
You can toggle this setting off or on in the ‘Display’ section of the “Displays” preference panel, also found in System Preferences.
Uncommon, but impacts some 2018 MacBook Air and 2018 MacBook Pro?
While this is likely not a particularly common problem, it has impacted enough new Retina MacBook Air owners to surface as a discussion topic in various online forums including MacRumors Forumsand various Apple Discussions threads (1, 2, 3, etc). You can also find similar threads pertaining to not only the 2018 MacBook Air but also the 2018 MacBook Pro.
Here is a very short (3 second) video showing the screen flickering on a 2018 MacBook Air when an iPhone flashlight is causing screen glare near the top of the display:
And possibly related is a similar issue shown in the video below on a MacBook Pro 2018 model, of which there are various reports found online as well, though it’s unclear if this screen flicker is caused by the same issue, or if it can be reproduced with the flashlight method or screen glare as discussed above.
Anyway, if you have a 2018 model MacBook Air or 2018 MacBook Pro, and you have any experience with the display backlight seemingly randomly flickering, try to reproduce it with the steps above, and try the workarounds offered like disabling automatic backlight adjustment. And if you’ve had this issue but managed it through another method, or if you contacted Apple and they resolved it for you, share that too. Let us know your own experiences in the comments below!
Thanks to our friends in OSXDaily.com for the link