06-10-2020, 08:15 AM
On a 2020 PP as well, experiencing this. I've noticed that is changed while attempting to update keyboard / trackpad firmware. Pitch / volume changes with keyboard indicator leds, low power items plugged into the USB 2.0 ports, and screen brightness.
It seems to go away while charging via USB-C, but not through the barrel jack.
It seems to go away while charging via USB-C, but not through the barrel jack.