edid-decode "/sys/class/drm/card0-DP-3/edid": EDID (hex): 00ffffffffffff00061012a000000000 1c160104b5301b78226fb1a7554c9e25 0c505400000001010101010101010101 0101010101011a3680a070381f403020 3500db0b1100001a8d0ec0a0301c1020 30203500db0b1100001a000000fc0069 4d61630a202020202020202000000000 000000000000000000000000000001e7 020326c1230907078301000070fa1000 00127a31fc78a3b202908854f568fa10 00fffaf9f9f91a3680a070381f403020 3500db0b1100001a8d0ec0a0301c1020 30203500db0b1100001a000000000000 00000000000000000000000000000000 00000000000000000000000000000000 00000000000000000000000000000083 Extracted contents: header: 00 ff ff ff ff ff ff 00 serial number: ... version: 01 04 basic params: b5 30 1b 78 22 chroma info: 6f b1 a7 55 4c 9e 25 0c 50 54 established: 00 00 00 standard: 01 01 01 01 01 01 01 01 01 01 01 01 01 01 01 01 descriptor 1: 1a 36 80 a0 70 38 1f 40 30 20 35 00 db 0b 11 00 00 1a descriptor 2: 8d 0e c0 a0 30 1c 10 20 30 20 35 00 db 0b 11 00 00 1a descriptor 3: 00 00 00 fc 00 69 4d 61 63 0a 20 20 20 20 20 20 20 20 descriptor 4: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 extensions: 01 checksum: e7 EDID version: 1.4 Manufacturer: APP Model a012 Serial Number ... Made in week 28 of 2012 Digital display 10 bits per primary color channel DisplayPort interface Maximum image size: 48 cm x 27 cm Gamma: 2.20 DPMS levels: Off Supported color formats: RGB 4:4:4 First detailed timing includes the native pixel format and preferred refresh rate Display x,y Chromaticity: Red: 0.6533, 0.3339 Green: 0.2998, 0.6201 Blue: 0.1464, 0.0498 White: 0.3125, 0.3291 Established timings supported: Standard timings supported: Detailed mode: Clock 138.500 MHz, 475 mm x 267 mm 1920 1968 2000 2080 hborder 0 1080 1083 1088 1111 vborder 0 +hsync -vsync VertFreq: 59 Hz, HorFreq: 66586 Hz Detailed mode: Clock 37.250 MHz, 475 mm x 267 mm 960 1008 1040 1120 hborder 0 540 543 548 556 vborder 0 +hsync -vsync VertFreq: 59 Hz, HorFreq: 33258 Hz Monitor name: iMac Manufacturer-specified data, tag 0 Has 1 extension blocks Checksum: 0xe7 (valid) CTA extension block Extension version: 3 34 bytes of CTA data Audio data block Linear PCM, max channels 2 Supported sample rates (kHz): 48 44.1 32 Supported sample sizes (bits): 24 20 16 Speaker allocation data block Speaker map: FL/FR - Front Left/Right Vendor-specific data block, OUI 0010fa Vendor-specific data block, OUI 0010fa Underscans PC formats by default Basic audio support 1 native detailed modes Detailed mode: Clock 138.500 MHz, 475 mm x 267 mm 1920 1968 2000 2080 hborder 0 1080 1083 1088 1111 vborder 0 +hsync -vsync VertFreq: 59 Hz, HorFreq: 66586 Hz Detailed mode: Clock 37.250 MHz, 475 mm x 267 mm 960 1008 1040 1120 hborder 0 540 543 548 556 vborder 0 +hsync -vsync VertFreq: 59 Hz, HorFreq: 33258 Hz Checksum: 0x83 (valid) EDID block does NOT conform to EDID 1.4! Required 640x480p60 timings are missing in the established timings and/or in the SVD list (VIC 1) Missing monitor ranges