===STDOUT=== Section "Monitor" Identifier "iMac" ModelName "iMac" VendorName "APP" # Monitor Manufactured week 51 of 2016 # EDID version 1.4 # Digital Display DisplaySize 300 340 Gamma 2.20 Option "DPMS" "true" #Extension block found. Parsing... ===STDERR=== Checksum Correct I only know about extension blocks of type 02h. PLEASE email me! Something strange happened. Please contact the author, Matthew Kern at ===RC=== 1