Mac mini 2018 showing always 32 RPM as target, minimum and maximum speed

[matzeema]

As shown on the pictures, Fanny is always showing that the fan is turning 32 RPM. I already have done the typical steps like rebooting the whole Mac, reinstalling the application with Homebrew and quitting and restarting Fanny itself but nothing worked out.

[anaderi]

Also on my mac mini 2018 "Current fan speed" jumps quite significantly - it can increase 10x in just a second, from 1k to 10k. I have no clue if it is a bug or not..

[erik-alm]

The "Target" / "Min" / "Max" speed = 32 rpm is also happening on a Mac Mini 2020 (with Catalina—I was about to test it on my other mac, but that's an air book so there I wouldn't be surprised if "fan speeds" were wanky...)