When my laptop is docked, I get bizzare scratching-like noises from the laptop whenever anything moves/changes on any of my screens. Even when I have nothing demanding running, scrolling on any page, maximizing a window, switching windows, playing a video, etc. causes the sound for the duration of the animation. From seeing similar forum posts my guess is that it’s coil whine, but unlike the other threads I’ve foundI do not have a dGPU. My setup is:
- FW16 AI 300 WITHOUT dGPU (I know the tag says 7040, I don’t see any 300 tag option for some reason!)
- NixOS with KDE Plasma
- Dell TB dock attached to external monitor and external mic/headphones (my laptop speakers are muted!)
I cannot reproduce the issue when the laptop is not docked; just AC power is not enough. If and when I have access to a different dock and/or different OS to test this on, I will update this thread with the results.
Possibly related: