
Most modern notebooks throw off a lot of heat when computing hard. Too much heat can force the cooling fans to go faster and therefore make more noise. The notebook that I keep by our couch for casual use while watching TV sometimes gets noisy. What's the heavy computing doing? Mostly running ads in Firefox. Since I don't really care how quickly ads run, I've switched the "power mode" to "power saver" and there seems to be less noise. Power Mode can be set several ways. The way I used on Fedora 40's Gnome Desktop: Settings: Power: Power Mode: Power Saver There is a slightly faster way that is harder to describe - click on top right of the screen (the little icons for networking, sound and power on are really one button) - that pops up a window showing a lot of things. One is "Power Mode" - click on "Power Mode" and it will toggle between "Balanced" and "Power Saver" (at least on my desktop). - Alternatively click on the ">" symbol on the "Power Mode" oval to get all the choices displayed (including "Performance") Note: just how the fans behave under different Power Modes is specific to the hardware. YMMV. My suspicion is that vendors like their computers to have good benchmark performance so the "balanced" mode is more likely to run fans than I'd like. I'm going to try "Power Saver" on more of my computers.