On Sun, Aug 27, 2017 at 3:53 PM, mn <mno...@gmx.net> wrote:

> On 27.08.17 22:41, Guenter Milde wrote:
>
> >>> The UserGuide currently is a real trouble maker.
> >
> > Can you have a look at the used fonts in this document?
> >
> The fonts used are just the defaults as set by opening the guide from
> help menu.
>
> I experimented with the fonts. LatinModern (the default) gives the same
> result as using Libertine or even XeTeX fonts.
>
> Also note: the downloadable version of the PDF hosted on lyx.org
> triggers the same symptoms.
>
>
> >> I can confirm strange behavior on macOS 10.12.5 with LyX 2.2.3.  Steps
> to
> >> reproduce:
> >
> >>    1. Launch LyX 2.2.3
> >>    2. Open User's Guide from Help Menu
> >>    3. Render
> >>       - All pages will be white (no text shown).  I do not see
> >>       beachballing, but the PDF is useless.
> >
> > Is there an error message or warning from LaTeX?
> > What fonts are used (eventually paste the LaTeX log)
> >
> There are a few warnings but these will likeley not lead anywhere.
> The PDF displays fine in Adobe Reader, is in vector and therefore the
> bug just has to be in macOS itself.
>
> The question is why it rears its ugly head in Apple's PDFKit?
> What makes UserGuide so special?
> People have called this document a "Preview-Killer".
>
> >>    4. New Document
> >>    5. Type "test"
> >>    6. Render
> >>       - The text in the PDF is not vector, but very low res raster
> >
> > I am not sure about "low res", but raster is expected:
> > This is the normal behaviour of LyX for ages. See
> http://www.lyx.org/trac/ticket/7334
> > and http://www.lyx.org/trac/ticket/9741.
> > As a first step in every LyX setup I recommend to
> > set Document>Settings>Fonts>Roman to LatinModern in the default template.
> >
> >>    8. Launch LyX 2.2.3
> >>    9. Type "test"
> >>    10. Render
> >>       - The text in the PDF is vector.
> >
> > Maybe you already changed the font default in this version?
> >
>
> No.
>
> Just to clarify for those not on macOS or a version <10.12.x:
> The text in UserGuide _and_ other PDFs is of course still _all_ in
> vector format, as a quick view of the same PDF in Adobe Reader will
> confirm.
>
> But once the bug is triggered – then thereafter – it is indeed in a much
> degraded quality that is very pixelated.
> That is likely because the OS renders text in an intermediate or lowres
> view for scrolling and this representation then stays on screen instead
> of the viewer finalizing the hires rendering of the same text.
>

Mike,

Do you want to create a ticket in the tracker on this and then we can
continue the discussion there?

- Joel

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