edid-decode "/sys/class/drm/card0-HDMI-A-3/edid": EDID (hex): 00ffffffffffff0010ac56d054303831 1a18010380301b78ea16c5a456509f26 125054a54b00714f8180d1c001010101 010101010101023a801871382d40582c 4500dc0b1100001e000000ff00434647 4b54343650313830540a000000fc0044 454c4c2053323234304d0a20000000fd 00384c1e5311000a2020202020200064 Extracted contents: header: 00 ff ff ff ff ff ff 00 serial number: ... version: 01 03 basic params: 80 30 1b 78 ea chroma info: 16 c5 a4 56 50 9f 26 12 50 54 established: a5 4b 00 standard: 71 4f 81 80 d1 c0 01 01 01 01 01 01 01 01 01 01 descriptor 1: 02 3a 80 18 71 38 2d 40 58 2c 45 00 dc 0b 11 00 00 1e descriptor 2: 00 00 00 ff 00 43 46 47 4b 54 34 36 50 31 38 30 54 0a descriptor 3: 00 00 00 fc 00 44 45 4c 4c 20 53 32 32 34 30 4d 0a 20 descriptor 4: 00 00 00 fd 00 38 4c 1e 53 11 00 0a 20 20 20 20 20 20 extensions: 00 checksum: 64 EDID version: 1.3 Manufacturer: DEL Model d056 Serial Number ... Made in week 26 of 2014 Digital display Maximum image size: 48 cm x 27 cm Gamma: 2.20 DPMS levels: Standby Suspend Off RGB color display First detailed timing is preferred timing Display x,y Chromaticity: Red: 0.6406, 0.3369 Green: 0.3134, 0.6230 Blue: 0.1513, 0.0703 White: 0.3134, 0.3291 Established timings supported: 720x400@70Hz 9:5 HorFreq: 31469 Hz Clock: 28.320 MHz 640x480@60Hz 4:3 HorFreq: 31469 Hz Clock: 25.175 MHz 640x480@75Hz 4:3 HorFreq: 37500 Hz Clock: 31.500 MHz 800x600@60Hz 4:3 HorFreq: 37900 Hz Clock: 40.000 MHz 800x600@75Hz 4:3 HorFreq: 46900 Hz Clock: 49.500 MHz 1024x768@60Hz 4:3 HorFreq: 48400 Hz Clock: 65.000 MHz 1024x768@75Hz 4:3 HorFreq: 60000 Hz Clock: 78.750 MHz 1280x1024@75Hz 5:4 HorFreq: 80000 Hz Clock: 135.000 MHz Standard timings supported: 1152x864@75Hz 4:3 HorFreq: 67500 Hz Clock: 108.000 MHz 1280x1024@60Hz 5:4 HorFreq: 64000 Hz Clock: 108.000 MHz 1920x1080@60Hz 16:9 Detailed mode: Clock 148.500 MHz, 476 mm x 267 mm 1920 2008 2052 2200 hborder 0 1080 1084 1089 1125 vborder 0 +hsync +vsync VertFreq: 60 Hz, HorFreq: 67500 Hz Serial number: ... Monitor name: DELL S2240M Monitor ranges (GTF): 56-76Hz V, 30-83kHz H, max dotclock 170MHz Checksum: 0x64 (valid)