Why EDID is not trustworthy for DPI

Frank Ch. Eigler fche at redhat.com
Wed Oct 5 19:50:40 UTC 2011

Adam Williamson <awilliam at redhat.com> writes:

> [...]
> But that's still going to require some kind of sensible handling of the
> case where one monitor is roughly 100dpi and the other is roughly
> 200dpi, unless we simply say 'you can't do that, all your displays have
> to be in the same DPI Category'.

Perhaps the solution is to bring back Zaphod / classic-multi-head mode
for dramatically different (e.g., DPI) outputs, so the issue of
dragging windows between them does not arise.

- FChE

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