To diagnose Macs circa 2012 with screen defects due to manufacturing by LG, use the `ioreg` command: https://github.com/SixArm/sixarm_unix_shell_scripts/blob/m

To diagnose Macs circa 2012 with screen defects due to manufacturing by LG, use the `ioreg` command: https://github.com/SixArm/sixarm_unix_shell_scripts/blob/master/macbook-pro-retina-screen-manufacturer https://github.com/SixArm/sixarm_unix_shell_scripts/blob/mas... ioreg -lw0 | grep \"EDID\" | sed "/[^<]*</s///" | xxd -p -r | strings -6