edid-decode "/sys/class/drm/card0-VGA-1/edid": EDID (hex): 00ffffffffffff00047214ad2b033052 170f0103681e17752a58209753509026 1e5054af4e006140614f4540454f3140 314f0101010164190040410026301888 360030e410000018000000ff0045544c 313430383136310a2020000000fd0037 4b1e3f08000a202020202020000000fc 004163657220414c313531310a200076 Extracted contents: header: 00 ff ff ff ff ff ff 00 serial number: ... version: 01 03 basic params: 68 1e 17 75 2a chroma info: 58 20 97 53 50 90 26 1e 50 54 established: af 4e 00 standard: 61 40 61 4f 45 40 45 4f 31 40 31 4f 01 01 01 01 descriptor 1: 64 19 00 40 41 00 26 30 18 88 36 00 30 e4 10 00 00 18 descriptor 2: 00 00 00 ff 00 45 54 4c 31 34 30 38 31 36 31 0a 20 20 descriptor 3: 00 00 00 fd 00 37 4b 1e 3f 08 00 0a 20 20 20 20 20 20 descriptor 4: 00 00 00 fc 00 41 63 65 72 20 41 4c 31 35 31 31 0a 20 extensions: 00 checksum: 76 EDID version: 1.3 Manufacturer: ACR Model ad14 Serial Number ... Analog display, Input voltage level: 0.7/0.7 V Sync: Separate Maximum image size: 30 cm x 23 cm Gamma: 2.17 DPMS levels: Off RGB color display First detailed timing is preferred timing Display x,y Chromaticity: Red: 0.5908, 0.3251 Green: 0.3144, 0.5625 Blue: 0.1484, 0.1191 White: 0.3125, 0.3281 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@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@75Hz 4:3 HorFreq: 46900 Hz Clock: 49.500 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 Standard timings supported: 1024x768@60Hz 4:3 HorFreq: 48400 Hz Clock: 65.000 MHz 1024x768@75Hz 4:3 HorFreq: 60000 Hz Clock: 78.750 MHz 800x600@60Hz 4:3 HorFreq: 37900 Hz Clock: 40.000 MHz 800x600@75Hz 4:3 HorFreq: 46900 Hz Clock: 49.500 MHz 640x480@60Hz 4:3 HorFreq: 31469 Hz Clock: 25.175 MHz 640x480@75Hz 4:3 HorFreq: 37500 Hz Clock: 31.500 MHz Detailed mode: Clock 65.000 MHz, 304 mm x 228 mm 1024 1048 1184 1344 hborder 0 768 771 777 806 vborder 0 -hsync -vsync VertFreq: 60 Hz, HorFreq: 48363 Hz Serial number: ... Monitor ranges (GTF): 55-75Hz V, 30-63kHz H, max dotclock 80MHz Monitor name: Acer AL1511 Checksum: 0x76 (valid) EDID block does not conform at all! Bad year of manufacture