Screen brightness is being reset to maximum after reboot

After upgrade to catalina 10.15.1, screen brightness is being reset to maximum after reboot, the behaviour is same even after waking up from sleep.

MacBook Pro 15", macOS 10.15

Posted on Nov 8, 2019 8:41 PM

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21 replies

Jan 21, 2020 12:05 AM in response to newpotty

I have the same issue as well with my 2017 13" MacBook Pro's. My work laptop as well as my personal one. I already have 'power nap' unselected, but the issue persists. Both are Catalina 10.15.2.

mike68w

Level 1

4 points

Mar 3, 2020 10:33 AM in response to abhijith142

Same here. 1 month old iMac 27/i9 running 10.15.3 - and it only happens randomly.

Pretty jarring when working in a dark office!

Come on Apple!

Mar 5, 2020 4:37 AM in response to abhijith142

I'm having this problem too....really annoying having to keep recalibrating it!!!

newpotty

Level 1

4 points

Mar 26, 2020 5:08 AM in response to Topher B

I have dual monitors as well, with the same maximum brightness problem. It never happened before the Catalina update.

Mar 26, 2020 2:13 PM in response to Topher B

I do have a dual monitor setup, but it happens when I don't have any connected as well. The monitor brand is Acer (at home) and Dell (at work).

newpotty

Level 1

4 points

Mar 27, 2020 5:01 AM in response to NoCo_Erik

Mine is a Samsung. It never happened before Catalina.

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Screen brightness is being reset to maximum after reboot