edid-decode "/sys/class/drm/card0-DP-3/edid": EDID (hex): 00ffffffffffff0010ac72a155383432 0c1e010380342078ea6db5a7564ea025 0d5054a54b00714f8180a940d1c0d100 010101010101283c80a070b023403020 360006442100001a000000ff00373646 324c32330a2020202020000000fc0044 454c4c2050323432310a2020000000fd 00384c1e5311000a202020202020013c 02031ab14c9005040302071601141f12 1365030c001000e2006a023a80187138 2d40582c450006442100001e011d8018 711c1620582c250006442100009e011d 007251d01e206e28550006442100001e 8c0ad08a20e02d10103e960006442100 00180000000000000000000000000000 000000000000000000000000000000a2 Extracted contents: header: 00 ff ff ff ff ff ff 00 serial number: ... version: 01 03 basic params: 80 34 20 78 ea chroma info: 6d b5 a7 56 4e a0 25 0d 50 54 established: a5 4b 00 standard: 71 4f 81 80 a9 40 d1 c0 d1 00 01 01 01 01 01 01 descriptor 1: 28 3c 80 a0 70 b0 23 40 30 20 36 00 06 44 21 00 00 1a descriptor 2: 00 00 00 ff 00 37 36 46 32 4c 32 33 0a 20 20 20 20 20 descriptor 3: 00 00 00 fc 00 44 45 4c 4c 20 50 32 34 32 31 0a 20 20 descriptor 4: 00 00 00 fd 00 38 4c 1e 53 11 00 0a 20 20 20 20 20 20 extensions: 01 checksum: 3c EDID version: 1.3 Manufacturer: DEL Model a172 Serial Number ... Made in week 12 of 2020 Digital display Maximum image size: 52 cm x 32 cm Gamma: 2.20 DPMS levels: Standby Suspend Off RGB color display First detailed timing is preferred timing Display x,y Chromaticity: Red: 0.6533, 0.3378 Green: 0.3076, 0.6259 Blue: 0.1464, 0.0537 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 1600x1200@60Hz 4:3 HorFreq: 75000 Hz Clock: 162.000 MHz 1920x1080@60Hz 16:9 1920x1200@60Hz 16:10 HorFreq: 74000 Hz Clock: 154.000 MHz Detailed mode: Clock 154.000 MHz, 518 mm x 324 mm 1920 1968 2000 2080 hborder 0 1200 1203 1209 1235 vborder 0 +hsync -vsync VertFreq: 59 Hz, HorFreq: 74038 Hz Serial number: ... Monitor name: DELL P2421 Monitor ranges (GTF): 56-76Hz V, 30-83kHz H, max dotclock 170MHz Has 1 extension blocks Checksum: 0x3c (valid) CTA extension block Extension version: 3 22 bytes of CTA data Video data block VIC 16 1920x1080@60Hz 16:9 (native) HorFreq: 67500 Hz Clock: 148.500 MHz VIC 5 1920x1080i@60Hz 16:9 HorFreq: 33750 Hz Clock: 74.250 MHz VIC 4 1280x720@60Hz 16:9 HorFreq: 45000 Hz Clock: 74.250 MHz VIC 3 720x480@60Hz 16:9 HorFreq: 31469 Hz Clock: 27.000 MHz VIC 2 720x480@60Hz 4:3 HorFreq: 31469 Hz Clock: 27.000 MHz VIC 7 1440x480i@60Hz 16:9 HorFreq: 15734 Hz Clock: 27.000 MHz VIC 22 1440x576i@50Hz 16:9 HorFreq: 15625 Hz Clock: 27.000 MHz VIC 1 640x480@60Hz 4:3 HorFreq: 31469 Hz Clock: 25.175 MHz VIC 20 1920x1080i@50Hz 16:9 HorFreq: 28125 Hz Clock: 74.250 MHz VIC 31 1920x1080@50Hz 16:9 HorFreq: 56250 Hz Clock: 148.500 MHz VIC 18 720x576@50Hz 16:9 HorFreq: 31250 Hz Clock: 27.000 MHz VIC 19 1280x720@50Hz 16:9 HorFreq: 37500 Hz Clock: 74.250 MHz Vendor-specific data block, OUI 000c03 (HDMI) Source physical address 1.0.0.0 Extended tag: Video capability data block YCbCr quantization: No Data (0) RGB quantization: Selectable (via AVI Q) (1) PT scan behaviour: Always Underscanned (2) IT scan behaviour: Always Underscanned (2) CE scan behaviour: Always Underscanned (2) Underscans PC formats by default Supports YCbCr 4:4:4 Supports YCbCr 4:2:2 1 native detailed modes Detailed mode: Clock 148.500 MHz, 518 mm x 324 mm 1920 2008 2052 2200 hborder 0 1080 1084 1089 1125 vborder 0 +hsync +vsync VertFreq: 60 Hz, HorFreq: 67500 Hz Detailed mode: Clock 74.250 MHz, 518 mm x 324 mm 1920 2008 2052 2200 hborder 0 540 542 547 562 vborder 0 +hsync +vsync interlaced VertFreq: 60 Hz, HorFreq: 33750 Hz Detailed mode: Clock 74.250 MHz, 518 mm x 324 mm 1280 1390 1430 1650 hborder 0 720 725 730 750 vborder 0 +hsync +vsync VertFreq: 60 Hz, HorFreq: 45000 Hz Detailed mode: Clock 27.000 MHz, 518 mm x 324 mm 720 736 798 858 hborder 0 480 489 495 525 vborder 0 -hsync -vsync VertFreq: 59 Hz, HorFreq: 31468 Hz Checksum: 0xa2 (valid) One or more of the timings is out of range of the Monitor Ranges: Vertical Freq: 50 - 75 Hz Horizontal Freq: 15625 - 80000 Hz Maximum Clock: 162.000 MHz EDID block does not conform at all! Both the serial number ...