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fan running at high speed

after updating macbook air 2017 to bigsur 11.1 the fan speed is very high even during idle

MacBook Air 13″, macOS 11.1

Posted on Dec 22, 2020 6:21 AM

Top-ranking reply

neuroanatomist

Level 9

50,167 points

Posted on Dec 22, 2020 6:33 AM

Check Activity Monitor to see what is running, perhaps in the background. After a major update, Spotlight will reindex y our drive and that can take a few days (processes are mds, mdsworker, etc.).

Activity Monitor User Guide for Mac - Apple Support

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fan running at high speed

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