edid-decode "/sys/class/drm/card0-VGA-1/edid": EDID (hex): 00ffffffffffff0000004217520b0000 030e010368221b78eaf0649857519127 214f54adcf0081800101010101010101 010101010101bc34009851002a401090 1300520f1100001e000000fc004c3741 4b32410a202020202020000000ff0030 30303030303030303030310a000000fd 00324b1f500e000a20202020202000c0 Extracted contents: header: 00 ff ff ff ff ff ff 00 serial number: ... version: 01 03 basic params: 68 22 1b 78 ea chroma info: f0 64 98 57 51 91 27 21 4f 54 established: ad cf 00 standard: 81 80 01 01 01 01 01 01 01 01 01 01 01 01 01 01 descriptor 1: bc 34 00 98 51 00 2a 40 10 90 13 00 52 0f 11 00 00 1e descriptor 2: 00 00 00 fc 00 4c 37 41 4b 32 41 0a 20 20 20 20 20 20 descriptor 3: 00 00 00 ff 00 30 30 30 30 30 30 30 30 30 30 30 31 0a descriptor 4: 00 00 00 fd 00 32 4b 1f 50 0e 00 0a 20 20 20 20 20 20 extensions: 00 checksum: c0 EDID version: 1.3 Manufacturer: @@@ Model 1742 Serial Number ... Analog display, Input voltage level: 0.7/0.7 V Sync: Separate 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: 0.5966, 0.3427 Green: 0.3164, 0.5664 Blue: 0.1533, 0.1308 White: 0.3095, 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@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 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 Standard timings supported: 1280x1024@60Hz 5:4 HorFreq: 64000 Hz Clock: 108.000 MHz Detailed mode: Clock 135.000 MHz, 338 mm x 271 mm 1280 1296 1440 1688 hborder 0 1024 1025 1028 1066 vborder 0 +hsync +vsync VertFreq: 75 Hz, HorFreq: 79976 Hz Monitor name: L7AK2A Serial number: ... Monitor ranges (GTF): 50-75Hz V, 31-80kHz H, max dotclock 140MHz Checksum: 0xc0 (valid) EDID block does not conform at all! Bad year of manufacture Manufacturer name field contains garbage