Re: F25 workstation, and (almost) hidpi displays

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On Fri, 2016-10-21 at 16:23 -0700, Thomas Daede wrote:
> Even more so
> because until recently, Qt still used EDID DPI scaling (as of 5.6, it
> supports a mode like Windows where it assumes 96dpi and supports
> fractional scale factors)

As I mentioned in my long mail, according to my investigation at least
it actually doesn't, because Qt tries to implement this by asking X for
the display size, and X doesn't try and tell it the truth. It just
takes the display resolution, figures out what reported display size
will make Qt calculate 96dpi for that display resolution, and tells it
that display size. The only exception to this is if you explicitly
specify DisplaySize in an X config file.

Many years ago when you queried X for the display size it would tell
you what the monitor claimed, but it doesn't any more.
-- 
Adam Williamson
Fedora QA Community Monkey
IRC: adamw | Twitter: AdamW_Fedora | XMPP: adamw AT happyassassin . net
http://www.happyassassin.net
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