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iMac display increases brightness after sleep

I set my iMac display brightness to about 70% in Preferences. But each morning when it wakes up from sleep, it's set on max, and I have to turn it down on the keyboard. I've also unchecked "Automatically adjust brightness."


Any idea what's going on?

iMac 21.5", macOS 10.14

Posted on May 14, 2019 7:59 PM

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Posted on May 23, 2019 4:30 AM

Try resetting the NVRAM Reset NVRAM or PRAM on your Mac - Apple Support

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iMac display increases brightness after sleep

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