Brian C. Huffman wrote:
This doesn't make sense to me (probably why I'm asking the question in the first place). You're calculating displaysize based on the resolution rather than the physical dimensions of the display. The man page for xorg.conf says the following:DisplaySize width height This optional entry gives the width and height, in millimetres, of the picture area of the monitor. If given this is used to calculate the horizontal and vertical pitch (DPI) of the screen.
The xorg documentation is applicable in case of a computer monitor that you only watch from a couple of feet away.
In case of a TV that you watch from far away, the truth is not what you want. The idea is to lie and tell X that the physical screen dimensions are smaller than what they really are (because the TV appears much smaller than if it was watched from up close).
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