I tried powering the module in three different ways, with the bottom, with the battery module and with the USB cable alone, but the noise persists.
This noise is like the speaker is stuck on maximum volume, static+high pitched sound like old CRT tv, changing volume with the function M5.Speaker.setVolume(); doesn't change anything.

Hello,

My m5stack core (the mpu9250 version) started to make some clicking noise on the speaker when a sketch is uploading and when is in normal function state some static and a high pitched noise can be heard.
Also since this noise started the upload process fails sometimes.
I think it started when I uploaded the FactoryTest example, but im not sure. Uploadin another sketch does not fix the issue.
Any clues on why this is happening?