I have a dell T5500 than i run with linux mint 20.3.
Recently one the fan start to have that issue that it starts to go full speed all the time.
When running the command sensors
to check on the temperature in the case, i can see the following:
screenshot of sensors command output
As you can see the temperature of the cores is ok at around 40 degrees, while the ambient temperature is marked as N/A. I suppose one of the sensors is damaged and is giving that output, i would need some help in fixing it , mitigating it effect or simply reducing manually the speed of that one fan that goes wild because of that.