Here I've decoded your EDID using 'xxd' and then 'edid-decode':

EDID version: 1.3
Manufacturer: SAM Model 509 Serial Number 1
Made in week 48 of 2008
Digital display
Maximum image size: 16 cm x 9 cm
Gamma: 2.20
RGB color display
First detailed timing is preferred timing
Display x,y Chromaticity:
  Red:   0.6396, 0.3300
  Green: 0.2998, 0.5996
  Blue:  0.1503, 0.0595
  White: 0.3125, 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@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@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:
  1152x864@75Hz 4:3 HorFreq: 67500 Hz Clock: 108.000 MHz
  1280x800@60Hz 16:10
  1280x960@60Hz 4:3 HorFreq: 60000 Hz Clock: 108.000 MHz
  1280x1024@60Hz 5:4 HorFreq: 64000 Hz Clock: 108.000 MHz
  1440x900@60Hz 16:10 HorFreq: 55500 Hz Clock: 88.750 MHz
  1440x900@75Hz 16:10 HorFreq: 82300 Hz Clock: 156.000 MHz
  1680x1050@60Hz 16:10 HorFreq: 64700 Hz Clock: 119.000 MHz
Detailed mode: Clock 148.500 MHz, 160 mm x 90 mm
               1920 2008 2052 2200 hborder 0
               1080 1084 1089 1125 vborder 0
               +hsync +vsync 
               VertFreq: 60 Hz, HorFreq: 67500 Hz
Detailed mode: Clock 85.500 MHz, 160 mm x 90 mm
               1360 1424 1536 1792 hborder 0
                768  771  777  795 vborder 0
               +hsync +vsync 
               VertFreq: 60 Hz, HorFreq: 47712 Hz
Monitor ranges (GTF): 24-75Hz V, 26-81kHz H, max dotclock 230MHz
Monitor name: SAMSUNG
Has 1 extension blocks
Checksum: 0x6f (valid)

CTA extension block
Extension version: 3
35 bytes of CTA data
  Video data block
    VIC  16 1920x1080@60Hz 16:9 (native) HorFreq: 67500 Hz Clock: 148.500 MHz
    VIC  31 1920x1080@50Hz 16:9  HorFreq: 56250 Hz Clock: 148.500 MHz
    VIC   4 1280x720@60Hz 16:9  HorFreq: 45000 Hz Clock: 74.250 MHz
    VIC  19 1280x720@50Hz 16:9  HorFreq: 37500 Hz Clock: 74.250 MHz
    VIC   5 1920x1080i@60Hz 16:9  HorFreq: 33750 Hz Clock: 74.250 MHz
    VIC  20 1920x1080i@50Hz 16:9  HorFreq: 28125 Hz Clock: 74.250 MHz
    VIC   3 720x480@60Hz 16:9  HorFreq: 31469 Hz Clock: 27.000 MHz
    VIC  18 720x576@50Hz 16:9  HorFreq: 31250 Hz Clock: 27.000 MHz
    VIC  32 1920x1080@24Hz 16:9  HorFreq: 27000 Hz Clock: 74.250 MHz
    VIC  33 1920x1080@25Hz 16:9  HorFreq: 28125 Hz Clock: 74.250 MHz
    VIC  34 1920x1080@30Hz 16:9  HorFreq: 33750 Hz Clock: 74.250 MHz
  Audio data block
    Linear PCM, max channels 2
      Supported sample rates (kHz): 48 44.1 32
      Supported sample sizes (bits): 24 20 16
  Speaker allocation data block
    Speaker map:
      FL/FR - Front Left/Right
  Extended tag: Video capability data block
    YCbCr quantization: No Data (0)
    RGB quantization: No Data (0)
    PT scan behaviour: No Data (0)
    IT scan behaviour: Support both over- and underscan (3)
    CE scan behaviour: Support both over- and underscan (3)
  Extended tag: Colorimetry data block
    xvYCC601
    xvYCC709
  Vendor-specific data block, OUI 000c03 (HDMI)
    Source physical address 1.0.0.0
    Supports_AI
    DC_36bit
    DC_30bit
    DC_Y444
    Maximum TMDS clock: 225MHz
Underscans PC formats by default
Basic audio support
Supports YCbCr 4:4:4
Supports YCbCr 4:2:2
1 native detailed modes
Detailed mode: Clock 74.250 MHz, 160 mm x 90 mm
               1280 1390 1430 1650 hborder 0
                720  725  730  750 vborder 0
               +hsync +vsync 
               VertFreq: 60 Hz, HorFreq: 45000 Hz
Detailed mode: Clock 74.250 MHz, 160 mm x 90 mm
               1280 1720 1760 1980 hborder 0
                720  725  730  750 vborder 0
               +hsync +vsync 
               VertFreq: 50 Hz, HorFreq: 37500 Hz
Detailed mode: Clock 74.250 MHz, 160 mm x 90 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, 160 mm x 90 mm
               1920 2448 2492 2640 hborder 0
                540  542  547  562 vborder 0
               +hsync +vsync interlaced 
               VertFreq: 50 Hz, HorFreq: 28125 Hz
Checksum: 0x1d (valid)

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https://bugs.launchpad.net/bugs/1792167

Title:
  Display size detected incorrectly

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