[pdftex] new pdftex warning "multiple pdfs with page group"

[Ulrike Fischer]

Hello,

in a german user group there was a report about a new pdftex
warning.

Including two pdf-figures (generated by open office) on one page
leads to the warning:

pdfTeX warning: pdflatex.exe (file
I:/Z-Test/minimalbeispiel/figure2.pdf): PDF
inclusion: multiple pdfs with page group included in a single page


I could reproduce the problem on win xp with
pdfTeX, Version 3.1415926-2.4-1.40.13 (MiKTeX 2.9)
and
pdfTeX, Version 3.1415926-2.4-1.40.13 (TeX Live 2012/W32TeX)

but not on a win 7 with
pdfTeX, Version 3.1415926-2.4-1.40.12 (MiKTeX 2.9).

So it looks as if the problem is new.


The code of the example is

\documentclass{scrartcl}
\usepackage{graphicx}

\begin{document}
\includegraphics[width=0.5\textwidth]{figure1}

\includegraphics[width=0.5\textwidth]{figure2}
\end{document}

The minimal example which also includes the two figures can be found
here
http://mrunix.de/forums/attachment.php?attachmentid=5284&d=1340864500

[Johannes]

Hello,

i had the same warnings with pdf's i exported from MS Visio.

When i changed from exporting from Visio to printing as pdf the warning didn't
show up again.

Maybe this can help.

(i used Win7 and pdfTeX, Version 3.1415926-2.4-1.40.13 (MiKTeX 2.9))

[Lars Madsen]

Post by Ulrike Fischer
Hello,
i had the same warnings with pdf's i exported from MS Visio.
When i changed from exporting from Visio to printing as pdf the warning didn't
show up again.
Maybe this can help.
(i used Win7 and pdfTeX, Version 3.1415926-2.4-1.40.13 (MiKTeX 2.9))

might be useful to know a bit more about those PDFs, which PDF version.

what are the exact warnings you get etc.

Otherwise it is not particularly easy to help

[Lars Madsen]

Post by Lars Madsen

Post by Ulrike Fischer
Hello,
i had the same warnings with pdf's i exported from MS Visio.
When i changed from exporting from Visio to printing as pdf the warning didn't
show up again.
Maybe this can help.
(i used Win7 and pdfTeX, Version 3.1415926-2.4-1.40.13 (MiKTeX 2.9))

might be useful to know a bit more about those PDFs, which PDF version.
what are the exact warnings you get etc.
Otherwise it is not particularly easy to help

my bad, didn't notice the 'same warning' label

though information about the PDFs might be handy

[Ulrike Fischer]

Post by Lars Madsen
though information about the PDFs might be handy

My posting did contain all informations needed to reproduce/test the
problem including a link to the pdf's .

[Lars Madsen]

Post by Ulrike Fischer

Post by Lars Madsen
though information about the PDFs might be handy

My posting did contain all informations needed to reproduce/test the
problem including a link to the pdf's .

yes, but Johannes was using

MS Visio

so a bit more details could still be handy

Though I cannot help with the current problem

[Johannes]

ok, so i tried to produce the warning again and:
it worked without warning when the pdf consisted of only one page,
i got the warning again when it was a multipage pdf

information on the pdfs:
printed:
pdf producer: Acrobat Distiller 9.0.0 (Windows)
pdf version: 1.5 (Acrobat 6.x)
application: PScript5.dll Version 5.2.2

Visio:
pdf producer: Microsoft Visio 2010
pdf version: 1.5 (Acrobat 6.x)
application: Microsoft Visio 2010

[Martin Schröder]

Post by Johannes
i had the same warnings with pdf's i exported from MS Visio.

Which?

Sorry, but yours is the first mail I see on this subject.
And it's missing a lot of information.

Best
Martin

[Johannes]

PDF inclusion: multiple pdfs with page group included in a single page

sorry for the lack of information, but i'm writing my master thesis at the
moment, so i don't have a lot of time :)

[Ulrike Fischer]

Post by Martin Schröder

Post by Johannes
i had the same warnings with pdf's i exported from MS Visio.

Which?
Sorry, but yours is the first mail I see on this subject.

Johannes answered a message I wrote on 28.6. to this list. Here the
content:

=========================
Hello,

in a german user group there was a report about a new pdftex
warning.

Including two pdf-figures (generated by open office) on one page
leads to the warning:

pdfTeX warning: pdflatex.exe (file
I:/Z-Test/minimalbeispiel/figure2.pdf): PDF
inclusion: multiple pdfs with page group included in a single page


I could reproduce the problem on win xp with
pdfTeX, Version 3.1415926-2.4-1.40.13 (MiKTeX 2.9)
and
pdfTeX, Version 3.1415926-2.4-1.40.13 (TeX Live 2012/W32TeX)

but not on a win 7 with
pdfTeX, Version 3.1415926-2.4-1.40.12 (MiKTeX 2.9).

So it looks as if the problem is new.


The code of the example is

\documentclass{scrartcl}
\usepackage{graphicx}

\begin{document}
\includegraphics[width=0.5\textwidth]{figure1}

\includegraphics[width=0.5\textwidth]{figure2}
\end{document}

The minimal example which also includes the two figures can be found
here
http://mrunix.de/forums/attachment.php?attachmentid=5284&d=1340864500

================================

[Akira Kakuto]

Dear Ulrike,

Post by Ulrike Fischer
So it looks as if the problem is new.

<</Type/Page/Parent 4 0 R/Resources 6 0 R/MediaBox[0 0 283 283]/Group<</S/Transparency/CS/DeviceRGB/I true>>/Contents 2 0 R>>

Maybe it is not a problem but a warning for inclusion of
more than one figures with 'page group' related to transparency
in a single page.

Thanks,
Akira

[Martin Schröder]

Post by Akira Kakuto
Maybe it is not a problem but a warning for inclusion of
more than one figures with 'page group' related to transparency
in a single page.

Likely. But really the maintainer of pdfTeX should answer it.

Best
Martin

[Ulrike Fischer]

Post by Akira Kakuto
Dear Ulrike,

Post by Ulrike Fischer
So it looks as if the problem is new.

<</Type/Page/Parent 4 0 R/Resources 6 0 R/MediaBox[0 0 283 283]/Group<</S/Transparency/CS/DeviceRGB/I true>>/Contents 2 0 R>>
Maybe it is not a problem but a warning for inclusion of
more than one figures with 'page group' related to transparency
in a single page.

Quite possible. But the main questions are
- why does it appear in version 1.40.13 but not in 1.40.12.
- it is something to worry about.
- if yes: what should one do the avoid the warning.

[Alexander]

Hi all,

any news about this problem? I also come to that point by updating Miktex. Now
my former well compiling code came up with approximatly 100 warnings of this
kind. That makes it hard to fix the "real" warnings.

So, anyone got further ideas mayby?

regards,
Alexander

[Thanh Han The]

Post by Alexander
Hi all,
any news about this problem? I also come to that point by updating Miktex. Now
my former well compiling code came up with approximatly 100 warnings of this
kind. That makes it hard to fix the "real" warnings.
So, anyone got further ideas mayby?

recently I added a check for the case when 2 or more pdfs are included
on the same page and they both have their own page group object. In
such a case, on the page group of the 1st is included, and the next
pdfs share the same page group. The problem existed in previous
versions of pdftex as well, but was not checked (and hence no warning
about it). The result pdf is however usually ok.

There are a few things that can be done:

- improve pdftex to compare the page group: if they are the same, no
warning is needed
- a command to turn off this kind of warning.

Regards,
Thanh

[Manuel Koch]

Post by Lars Madsen

Post by Ulrike Fischer
Hello,
i had the same warnings with pdf's i exported from MS Visio.
When i changed from exporting from Visio to printing as pdf the
warning didn't
show up again.
Maybe this can help.
(i used Win7 and pdfTeX, Version 3.1415926-2.4-1.40.13 (MiKTeX 2.9))

might be useful to know a bit more about those PDFs, which PDF version.
what are the exact warnings you get etc.
Otherwise it is not particularly easy to help

my bad, didn't notice the 'same warning' label

though information about the PDFs might be handy

--

/daleif