I got a MacBook Pro 15˝ built in 2015 (MacBookPro11,4). In order to calibrate the built-in monitor, I have to identify it and figure out if it uses a white LED-backlit for instance. I found two Terminal codes. Code: ioreg -lw0 | grep \"EDID\" | sed "/[^<]*</s///" | xxd -p -r | strings -6 This code does not return anything. Code: ioreg -lw0 | grep IODisplayEDID | sed "/[^<]*</s///" | xxd -p -r | strings -6 This code just returns Code: Color LCD which does not help. Does anybody know what to do? The computer runs macOS Sierra 10.12.3.