Sorry I lost track of this bug. The attachment in comment #7 shows:

HDMI-1 connected 1920x1080+1366+0 (0x8b) normal (normal left inverted
right x axis y axis) 160mm x 90mm

So the hardware is indeed reporting itself as ~7.2 inches. This is a
hardware fault (incorrect EDID data?) I have seen before. Probably the
best we can hope for is to add heuristics to detect faulty hardware, but
that would be unreliable and unlikely to ever happen.


** Changed in: mutter (Ubuntu)
       Status: Confirmed => Invalid

** Changed in: qtbase-opensource-src (Ubuntu)
       Status: Confirmed => Invalid

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

Title:
  Display size detected incorrectly

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