WhenI start My pi 4B (4GB) systematically the usb 2.0 ports are frozen, the mouse and keyboards are not recognized, neither the wireless keyboard (Logitech). Only after I change the USB port the mouse get recognized, sometime i need to swap the USB cable 2 or 3 times.
After that if I shutdown, unplug and re-plug the power connector, it will usually start all right (mouse is recognized !) Next start after a few hours the mouse will not be recognized again ! very strange . . . Could it be a power issue ?