Why EDID is not trustworthy for DPI

Camilo Mesias camilo at mesias.co.uk
Tue Oct 4 20:03:01 UTC 2011


On Tue, Oct 4, 2011 at 6:54 PM, Adam Jackson <ajax at redhat.com> wrote:
> I am clearly going to have to explain this one more time, forever.
> Let's see if I can't write it authoritatively once and simply answer
> with a URL from here out.  (As always, use of the second person "you"
> herein is plural, not singular.)

Thanks for the explanation... There is an alternative to endless
explanation - roll out your best effort at a heuristic and let the
crowd contribute to an ever growing set of exceptions.

To play the devil's advocate, I'm asking why the monitor situation is
different from any other bit of hardware. Drivers for mice, touchpads,
wifi, NICs etc all suffer from the same lack of rigorous published
specs / documentation, they are supported in Linux, fallibly, by ever
growing tables of parameters and heuristics.


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