Arch Linux

mass_t

Member

Registered: 2015-04-21

Posts: 84

Noise

When the power is connected, the laptop's fans start to make a lot of noise. This only happens when the power is connected, immediately after disconnecting the fans are quiet. What do I need to pay attention to?

leonavis

Member

From: Bremen, Germany

Registered: 2021-06-27

Posts: 71

Re: Noise

Well, when the fan makes noise, it tries to cool the parts. So my guess would be that the laptop draining power through the psu somehow makes the parts hot. Either that, or there is an error. That error would most likely not be connected to Arch though, but you could check that easily.

Does the fan start making noise immediately?

What model is it?

seth

Member

From: Won't reply 2 private help req

Registered: 2012-09-03

Posts: 76,569

Re: Noise

Something™ will upstep the CPU.
Alternatively something™ activates the dedicated GPU.
Or someprocess™ goes wild and causes a lot of system load,

https://wiki.archlinux.org/title/CPU_frequency_scaling
https://wiki.archlinux.org/title/Power_management
https://man.archlinux.org/man/core/procps-ng/top.1.en

If you cannot identify the cause this way, powertop can tell you what draws how much battery - the thing that rises when you plug the AC is the culprit.

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