I am attaching two files (adobereaderps.types and adobereaderps.convs)
to this and to the next comment. These make CUPS detecting PostScript
coming from the Adobe Reader and not applying the PDF printing workflow
on them (keeping them PostScript until processed by the printer driver).
Note that all PostScript files from Adobe Reader will get treated this
way as CUPS is not able to distinguish PostScript from encrypted and
unencrypted PDFs (CUPS only takes into account the first 4096 bytes of
an input file to auto-type it).
Install the files by copying them into your /etc/cups/ directory and
making sure that they are readable for everyone ("sudo chmod 644
/etc/cups/adobereaderps.*"). Then restart CUPS with
sudo restart cups
After that try to print your files. Does it work now?
** Attachment added: "MIME type definition file to detect PostScript files from
Adobe Reader"
https://bugs.launchpad.net/ubuntu/+source/cups/+bug/782309/+attachment/2144615/+files/adobereaderps.types
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https://bugs.launchpad.net/bugs/782309
Title:
Printing encrypted PDFs on a non-PostScript printer gives a blank page
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