This bug was fixed in the package ocrfeeder -
0.8.1+git20200128.b945089-1ubuntu1
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ocrfeeder (0.8.1+git20200128.b945089-1ubuntu1) focal; urgency=medium
* d/patches/wait-for-ghostcript.patch: resolve race condition causing
PDF imports to silently fail. (LP: #1890013)
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While this second image shows a successful PDF import after installing
ocrfeeder from -proposed.
** Attachment added: "ocrfeeder_success_case.png"
https://bugs.launchpad.net/ubuntu/+source/ocrfeeder/+bug/1890013/+attachment/5542886/+files/ocrfeeder_success_case.png
** Tags removed:
The verification passed for focal. The attached image shows the "No
images added" message after attempting to import a PDF.
** Attachment added: "ocrfeeder_fail_case.png"
https://bugs.launchpad.net/ubuntu/+source/ocrfeeder/+bug/1890013/+attachment/5542885/+files/ocrfeeder_fail_case.png
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** Changed in: ocrfeeder (Ubuntu Focal)
Assignee: (unassigned) => William Wilson (jawn-smith)
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https://bugs.launchpad.net/bugs/1890013
Title:
ocrfeeder PDF import systematically
Hello Etienne, or anyone else affected,
Accepted ocrfeeder into focal-proposed. The package will build now and
be available at
https://launchpad.net/ubuntu/+source/ocrfeeder/0.8.1+git20200128.b945089-1ubuntu1
in a few hours, and then in the -proposed repository.
Please help us by testing this
$ dput ocrfeeder_0.8.1+git20200128.b945089-1ubuntu1_source.changes
Trying to upload package to ubuntu
Checking signature on .changes
gpg:
/tmp/pkgs/focal/ocrfeeder_0.8.1+git20200128.b945089-1ubuntu1_source.changes:
Valid signature from 1E918B66765B3E31
Checking signature on .dsc
gpg:
** Also affects: ocrfeeder (Ubuntu Focal)
Importance: Undecided
Status: New
** Changed in: ocrfeeder (Ubuntu)
Status: Confirmed => Fix Released
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For historical interest, I note that I don't see (2) in ocrfeeder 0.8.1
under Xenial. Fixing (1) by reverting gs to 9.25 or replacing with a
patched 9.50 solved my issue with ocrfeeder in that configuration. I
presume it's running under Python 2.7.17.
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This bug is not present in bionic as it does not occur with the version
of Python in Bionic. Hirsute and impish have a newer version of
ocrfeeder in which this bug is fixed.
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** Patch added: "lp1890013.debdiff"
https://bugs.launchpad.net/ubuntu/+source/ocrfeeder/+bug/1890013/+attachment/5542691/+files/lp1890013.debdiff
** Tags added: verification-needed verification-needed-focal
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Bugs, which
** Description changed:
+ [Impact]
+ When attempting to import PDF files, a scenario frequently
+ occurs in which the import fails with no error message.
+ This happens because ocrfeeder does not wait for the call
+ to ghostscript to finish running before attempting to
+ read its output.
+
Looks like there are two things going on here:
1) A bug in ghostscript that fails to correctly convert the PDF files
https://bugs.launchpad.net/ubuntu/+source/ghostscript/+bug/1913656
2) A race condition in ocrfeeder itself. The function convertPdfToImages
returns without waiting for the
Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: ocrfeeder (Ubuntu)
Status: New => Confirmed
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https://bugs.launchpad.net/bugs/1890013
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