Even under moderate load, the Pi rarely goes above 55☌ in my basement, where there's adequate natural convection, so the fans would only really be necessary under heavy load.Īs it turns out, there are some device tree overlays you can configure in the Pi's /boot/config.txt to control the speeds and temperatures when the fan runs on the PoE HAT, and I liked the defaults user Nooblet-69 suggested on GitHub: # PoE Hat Fan Speeds I'd be happy to let my Pis idle around 50-60☌, and only have the little whiny fans come on beyond those temperatures. The one thing I hate most about those little HATs is the fact the fans spin up around 40☌, and then turn off a few seconds later, once the temperature is back down to 39 or so, all day long. **#**Caution you may destroy your device if not done correctly.I am starting to rack up more Pis ( quite literally) using the official Pi PoE HAT to save on cabling. i have done this before 2years ago and it is hard really hard. If you have that much technical knowledge and you are comfortable with this much details then repasteing with a good thermal compound can solve this issue. Sometimes processor fan gets clogged and makes noise Sometimes the processor thermal compound gets dried up so it can’t transfer the heat efficiently it may cause this issue As your laptop was not sounding that before so Watch the noise you are hearing is maybe due to overheating you can monitor the temperature of your cpu and if you think it is getting hot so your device fan gets rammed up like crazy. You can kill that and see if issue resolves and give us feedback.

If issue is that your processor getting hot that is why fan makes noise and you artificially slow down that fan it can lead to bad performance and thermal slowdown and may underperform your cpu.Īnd also monitor the applications if something is taking more than usual amount of resources like cpu.

Fedora fan control