MacOS Ventura 13.3.1 - on lock-screen, screen changes brightness about once per second - dark/light/dark/light...

It seems that turning off HDR (High Dynamic Range) stops it from doing this.

MacBook Pro 16″

Posted on May 10, 2023 12:44 PM

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2 replies

leroydouglas

Level 10

200,790 points

May 24, 2023 5:10 PM in response to mn_test347

mn_test347 wrote:

MacOS Ventura 13.3.1 - on lock-screen, screen changes brightness about once per second - dark/light/dark/light...

It seems that turning off HDR (High Dynamic Range) stops it from doing this.

The current stable release of Ventura including bug fixes, security updates is macOS Ventura 13.4 I would start there

Keep your Mac up to date - Apple Support

mn_test347 Author

Level 1

4 points

May 24, 2023 5:19 PM in response to leroydouglas

Really? 13.3 was only released on March 27. The problem started when I upgraded to 13.3.1 - I'm not excited about doing an upgrade again so soon that may or may not fix the problem. Especially given that an upgrade is what caused the problem.

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MacOS Ventura 13.3.1 - on lock-screen, screen changes brightness about once per second - dark/light/dark/light...