Been running into an issue with the backlight...


macrumors 68020
Original poster
Mar 17, 2009
I have a late 2010 MBA 11", and I've been running into an issue where the backlight won't turn on when I open the lid. I can see (barely) that the screen is on, but I can't get the backlight to turn on. I have to close the lid (sometimes a few times), and eventually it'll come on.

I'm running Mountain Lion (latest version), and it's always plugged in when this happens.

Just curious if anyone else has run into this. It's an intermittent problem.


macrumors 6502a
Feb 10, 2009
I've had similar issues on a 2012 13in MBA running 10.8.2. At first I thought it just wasn't waking up and ended up powering it off and back on; but then I noticed it happen when there was sufficient daylight to see the screen, and realised it was the backlight.

It's only happened during or after a charge - opening the lid both when it's still plugged in and after removing the charger plug.

I've worked round it by closing and reopening the lid, as you say, or briefly pressing the Esc button to cancel & sleep again, then any key to re-awake.


macrumors regular
Jun 13, 2012
Thick Ascending Limb
This just happened to me on my 2012 MBA. Hope it doesn't happen again. Turned it all the way off then back on and the screen is fine. I was initially worried the inverter was fried.


macrumors 6502
Nov 27, 2007
My backlight will automatically adjust even after I've disabled that functionality. Seems everyone has backlight problems of some kind!
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