Runaway corebrightnessd process · Victor Wynne

Victor Wynne

Runaway corebrightnessd process

Make note of the time in between each error!

I ran into an issue where the corebrightnessd process was slamming my Apple Silicon MacBook Air non-stop to the point where the device would crash within a few minutes after logging in unless I repeatedly force quit it. I spent the better part of my day trying to solve the issue and the culprit ended up being the latest beta release of Monterey (Build 21A5534d) containing a keyboard brightness bug. So for the time being I have to leave ‘adjust keyboard brightness in low light’ enabled until a fix is released. So if you happen to run into this and are being driven mad trying to figure out the solution…here you are. 🤓👍🏻💻