Public bug reported:

Per the EDID 1.3 specification, the correct and expected aspect ratios for 
Standard Timings are:
16:10
4:3
5:4
16:9

Under Standard Timings Supported, edid-decode.c contains 9 / 15  instead
of 9 / 16  which results in incorrect output for this section.

EG: line 1057 should read:
case 0x03:
        y = x * 9 / 16;
        break;

But instead reads:
case 0x03:
        y = x * 9 / 15;
        break;

** Affects: edid-decode (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1475757

Title:
  Several incorrect aspect ratios result in erroneous output

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