My configuration is a Pixhawk Cube Orange Hexacopter.
Long story short. Servo output does shows a signal is being sent to the ESC, but the rotors are not spinning. Arm switch is on, and just 2 rotors would spin. I went through the calibration process and just 2 rotors would receive the min and max. After armed 2 rotors works, the others would just beep. We recently build the arms connecting the esc and rotors, so we are gonne work to double check the physical wires are connected correclty.