I have PixHawk 2.4.8 box, Arduplane 4.2.3, Mission Planner 1.3.77
Also I unstalled external baro BM280 on I2C interface. So, You may see following picture - internal PixHawk baro show pressure in twice smaller, then externel. It works and measure ok, but indicatios - exactly two times less. How do You think, is it problem in sensor, or in driver? And next question - is it possible to turn off internal baro?