Why EDID is not trustworthy for DPI

Matthew Garrett mjg59 at srcf.ucam.org
Thu Oct 6 16:12:38 UTC 2011

On Thu, Oct 06, 2011 at 12:00:36PM -0400, Simo Sorce wrote:

> So in that case you really should just give an option to the user to
> easily change DPI (no need to call the option 'DPIs', it can be a slider
> with no mention of DPI if you prefer) *if* it is needed.
> Chances are that a much wider font resulting from high density primary
> display derived DPI number combined with low resolution video projector
> screen will show big fonts and that will happen to be *exactly* what you
> want so the guy back there at the end of the room has a chance to
> actually read something :)

I absolutely agree that there should be an easy mechanism to globally 
change font size. But I don't think tying it to DPI is helpful.

Matthew Garrett | mjg59 at srcf.ucam.org

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