Why EDID is not trustworthy for DPI

Felix Miata mrmazda at earthlink.net
Tue Oct 4 19:53:19 UTC 2011

Ordinary users don't care about DPI any more than they do about what number 
point or pixel size their favorite font size is.

Why can't something akin to 
http://people.gnome.org/~federico/news-2007-01.html be employed so that no 
one gets initialized or stuck with unsuitable sizes?

Snap the result to a multiple of 4, 6, 12 or 24 so that font steps between 
sizes coordinate well with common scalable font behavior, and for those who 
desire greater accuracy, offer an advanced opt-out to the snap.

Provide optional inputs for screen width, height and/or diagonal and the 
under-the-covers DPI might occasionally turn out to match the display 
density, an ideal result for probably most people.

Focus on getting it suitable for single display users before attacking multis.
"The wise are known for their understanding, and pleasant
words are persuasive." Proverbs 16:21 (New Living Translation)

  Team OS/2 ** Reg. Linux User #211409 ** a11y rocks!

Felix Miata  ***  http://fm.no-ip.com/

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