edid-decode "/sys/class/drm/card0-VGA-1/edid": EDID (hex): 00ffffffffffff004d10af2001010101 260d01030e221b78ea281fa15a499925 1a4c55bfef808180814081878190714f 614601010101302a009851002a403070 1300520e1100001e000000ff00334430 30383739390a20202020000000fc004c 4c2d54313741342d420a2020000000fd 00374d18520e000a20202020202000dc Extracted contents: header: 00 ff ff ff ff ff ff 00 serial number: ... version: 01 03 basic params: 0e 22 1b 78 ea chroma info: 28 1f a1 5a 49 99 25 1a 4c 55 established: bf ef 80 standard: 81 80 81 40 81 87 81 90 71 4f 61 46 01 01 01 01 descriptor 1: 30 2a 00 98 51 00 2a 40 30 70 13 00 52 0e 11 00 00 1e descriptor 2: 00 00 00 ff 00 33 44 30 30 38 37 39 39 0a 20 20 20 20 descriptor 3: 00 00 00 fc 00 4c 4c 2d 54 31 37 41 34 2d 42 0a 20 20 descriptor 4: 00 00 00 fd 00 37 4d 18 52 0e 00 0a 20 20 20 20 20 20 extensions: 00 checksum: dc EDID version: 1.3 Manufacturer: SHP Model 20af Serial Number ... Analog display, Input voltage level: 0.7/0.3 V Sync: Separate Composite SyncOnGreen Maximum image size: 34 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: 0.6289, 0.3535 Green: 0.2871, 0.5976 Blue: 0.1445, 0.1025 White: 0.2998, 0.3349 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@67Hz 4:3 HorFreq: 35000 Hz Clock: 30.240 MHz 640x480@72Hz 4:3 HorFreq: 37900 Hz Clock: 31.500 MHz 640x480@75Hz 4:3 HorFreq: 37500 Hz Clock: 31.500 MHz 800x600@56Hz 4:3 HorFreq: 35200 Hz Clock: 36.000 MHz 800x600@60Hz 4:3 HorFreq: 37900 Hz Clock: 40.000 MHz 800x600@72Hz 4:3 HorFreq: 48100 Hz Clock: 50.000 MHz 800x600@75Hz 4:3 HorFreq: 46900 Hz Clock: 49.500 MHz 832x624@75Hz 4:3 HorFreq: 49726 Hz Clock: 57.284 MHz 1024x768@60Hz 4:3 HorFreq: 48400 Hz Clock: 65.000 MHz 1024x768@70Hz 4:3 HorFreq: 56500 Hz Clock: 75.000 MHz 1024x768@75Hz 4:3 HorFreq: 60000 Hz Clock: 78.750 MHz 1280x1024@75Hz 5:4 HorFreq: 80000 Hz Clock: 135.000 MHz 1152x870@75Hz 192:145 HorFreq: 67500 Hz Clock: 108.000 MHz Standard timings supported: 1280x1024@60Hz 5:4 HorFreq: 64000 Hz Clock: 108.000 MHz 1280x960@60Hz 4:3 HorFreq: 60000 Hz Clock: 108.000 MHz 1280x1024@67Hz 5:4 1280x1024@76Hz 5:4 1152x864@75Hz 4:3 HorFreq: 67500 Hz Clock: 108.000 MHz 1024x768@66Hz 4:3 Detailed mode: Clock 108.000 MHz, 338 mm x 270 mm 1280 1328 1440 1688 hborder 0 1024 1025 1028 1066 vborder 0 +hsync +vsync VertFreq: 60 Hz, HorFreq: 63981 Hz Serial number: ... Monitor name: LL-T17A4-B Monitor ranges (GTF): 55-77Hz V, 24-82kHz H, max dotclock 140MHz Checksum: 0xdc (valid) EDID block does not conform at all! Bad year of manufacture