3 ms·

2. How old and which model is your MacBook? I remember a completely idiotic hack around 2013 that fixed some hardware problem by software and causing the fans t

2. How old and which model is your MacBook? I remember a completely idiotic hack around 2013 that fixed some hardware problem by software and causing the fans to spin at full speed constantly. There was some way to fix it by setting some preference from the command line IIRC.

jungletime 6y ago
its a 2013 retina 13 inch macbook, waiting for the new arm based macbook, will probably upgrade this year.
- peterhil 6y ago
  Check out if there is a process causing a lot of CPU usage, and google that together with fans. Macosxhints.com or iFixit.com might have the solution to fix it.
- peterhil 6y ago
  On the other hand, Google Chrome is a real resource hog these days, and sometimes the usage is not shown in CPU or memory columns in top or htop. You might find that Firefox or Opera are more leight weight.
peterhil 6y ago
There are several things that might cause fans spinning at high speed: - Some application is using a lot of CPUs and other resources - Spotlight is indexing the hard drive, and is misbehaving (see for mdworker processes) - The ventilation holes are physically blocked or there is a lots of dust - The System Management Controller is misbehaving (especially on some 2013 and 2018 and later MacBooks which have T2 security chip). Resetting the SMC often helps with strange hardware problems. Apple support links: * [If the fans in your Mac run at full speed when you turn it on - Apple Support](https://support.apple.com/en-us/HT204463 https://support.apple.com/en-us/HT204463) * [See how apps affect Mac performance, battery runtime, temperature, and fan activity - Apple Support](https://support.apple.com/en-us/HT203184 https://support.apple.com/en-us/HT203184) * [Keep your Mac notebook within acceptable operating temperatures - Apple Support](https://support.apple.com/en-us/HT201640 https://support.apple.com/en-us/HT201640) * [How to reset the SMC of your Mac - Apple Support](https://support.apple.com/en-us/HT201295 https://support.apple.com/en-us/HT201295)

jungletime 6y ago

its a 2013 retina 13 inch macbook, waiting for the new arm based macbook, will probably upgrade this year.

peterhil 6y ago
Check out if there is a process causing a lot of CPU usage, and google that together with fans. Macosxhints.com or iFixit.com might have the solution to fix it.
peterhil 6y ago
On the other hand, Google Chrome is a real resource hog these days, and sometimes the usage is not shown in CPU or memory columns in top or htop. You might find that Firefox or Opera are more leight weight.

peterhil 6y ago

There are several things that might cause fans spinning at high speed: - Some application is using a lot of CPUs and other resources - Spotlight is indexing the hard drive, and is misbehaving (see for mdworker processes) - The ventilation holes are physically blocked or there is a lots of dust - The System Management Controller is misbehaving (especially on some 2013 and 2018 and later MacBooks which have T2 security chip). Resetting the SMC often helps with strange hardware problems. Apple support links: * [If the fans in your Mac run at full speed when you turn it on - Apple Support](https://support.apple.com/en-us/HT204463 https://support.apple.com/en-us/HT204463) * [See how apps affect Mac performance, battery runtime, temperature, and fan activity - Apple Support](https://support.apple.com/en-us/HT203184 https://support.apple.com/en-us/HT203184) * [Keep your Mac notebook within acceptable operating temperatures - Apple Support](https://support.apple.com/en-us/HT201640 https://support.apple.com/en-us/HT201640) * [How to reset the SMC of your Mac - Apple Support](https://support.apple.com/en-us/HT201295 https://support.apple.com/en-us/HT201295)