Seen same power warnings, when powered by RP4 5V/3A. Had to use 5.1V power supply to get rid of them.
It's been that way since the RP3 - heavy load resulting in rainbow square. Use the official power supply labelled 5.1v and the square disappears
Re:Raspberry Pi Ltd is considering an IPO
by rerdavies on Thursday May 16, 2024 @02:04AM
(#40375645)
Maybe it's a spiky 9.7w. :-/
A very real problem. Also power supply/chip tolerances and a little extra gunk on a pin somewhere can line up unfavorably.
Personally, I had tons of power issues due to underspec cables with a Pi4. Irritating.
This is compellingly saying that I was too hasty in assuming the low voltage warnings were from the 18W supply topping out. Thank you for this.