Dave requested that I paste this in response:
[20:30] <d_ed> can someone reply to an email on fedora-kde titled "Re: Proper
way to configure HiDPI font & icon scaling?" for me and say "Dave says
https://paste.kde.org/pbmp967au"
[20:30] <d_ed> I got linked, but I don't want to sign up to yet another
mailing list (sorry!)
On Friday, June 24, 2016 10:06:33 AM EDT Neal Becker wrote:
r.green(a)officeserve.com wrote:
> The way to configure HiDPI font and icon scaling in KDE has changed at
> least a couple of times: (Note: Some programs, such as Chromium and Java,
> ignore all these settings and have to be configured independently.)
>
> 1. In the original implementation of HiDPI support for KDE, as documented
> in blog posts by KDE developer David Edmundson, it was necessary to set
> both "force font DPI" - for fonts - and "scale display" - for
everything
> else.
>
> 2. In January when I first installed Fedora 23, setting both "force font
> DPI" and "scale display" produced unexpected results - I eventually
> figured out that in fact, it worked much better if I just set "scale
> display" to 2.
>
> 3. I've since changed jobs and installed Fedora 23 on a new laptop, and
> with all the updates installed, it's again necessary to set both "force
> font DPI" and "scale display" for everything to be legible without
> squinting. But this it's undesirable to set both, because now with both
> set, most KDE applications have huge fonts. Non-KDE applications like
> Thunderbird look OK though.
>
> Some possible clues as to why this has changed again:
>
> Clue 1: If I leave "force font DPI" unset, it's actually set to 0 in
a
> config file, and the fonts are really tiny, suggesting that 0 is being
> interpreted as "very small".
>
> Clue 2: I now get these messages when I run a KDE application from a
> konsole:
>
> Warning: QT_DEVICE_PIXEL_RATIO is deprecated. Instead use:
> QT_AUTO_SCREEN_SCALE_FACTOR to enable platform plugin controlled
> per-screen factors. QT_SCREEN_SCALE_FACTORS to set per-screen factors.
> QT_SCALE_FACTOR to set the application global scale factor.
>
> So I'm guessing that Qt has been upgraded to a newer version, but KDE
> hasn't been updated to take account of the changes mentioned above.
>
> Since they are environment variables, it looks like I can set them myself
> without needing to wait for KDE to be fixed. So how should I set them?
where/how are you setting these variables?
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