Alan,

Could you create a "documentation" ticket for this in our JIRA system (as
that's sometimes an easier place to find "known issues")?  This sounds like
something we should get into the official documentation, and having a
ticket to remind us (and as a place to add additional questions/comments)
would be useful.

Thanks,

Tim

On Thu, Oct 11, 2018 at 12:27 AM Alan Orth <alan.o...@gmail.com> wrote:

> Dear DSpace people,
>
> Recently I noticed that our PDFs were not getting thumbnails generated for
> them. I ran the filter-media script manually and saw an error like this:
>
> org.im4java.core.InfoException: org.im4java.core.CommandException:
> org.im4java.core.CommandException: identify: not authorized
> `/tmp/impdfthumb5039464037201498062.pdf' @ error/constitute.c/ReadImage/412.
>
> According to an Ubuntu Security Notice from 2018-10 the Ubuntu developers
> have decided to disable PDF processing by default in their ImageMagick[0]
> package. This affects all currently supported Ubuntu long-term support
> releases.
>
> If you are using DSpace 5.x or 6.x with ImageMagick thumbnail support, you
> will need to change your system's ImageMagick policy.xml file to re-enable
> PDF processing. On Ubuntu 16.04 the file is /etc/ImageMagick-6/policy.xml.
> Delete or comment out the following line:
>
> <policy domain="coder" rights="none" pattern="PDF" />
>
> Regards,
>
> [0] https://usn.ubuntu.com/3785-1/
> --
> Alan Orth
> alan.o...@gmail.com
> https://picturingjordan.com
> https://englishbulgaria.net
> https://mjanja.ch
> "In heaven all the interesting people are missing." ―Friedrich Nietzsche
>
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-- 
Tim Donohue
Technical Lead for DSpace & DSpaceDirect
DuraSpace.org | DSpace.org | DSpaceDirect.org

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