Bug#950690: cups-filters: Printing fails with an error about Grayscale/monochrome conversion
Package: cups-filters
Version: 1.27.0-2
Severity: important
Hi,
since “some” time (few weeks maybe, I guess the 1.27.0 upload), I can't
print on my Brother HL-5250DN network printer (which was working just
fine earlier).
The printer is laser monochrome, and I always was able to print color
and monochrome stuff, conversion was happening just fine.
Now, when I try to print, nothing happens and I guess an error in the
logs about:
W [04/Feb/2020:21:28:45 +0100] [Job 570] Grayscale/monochrome printing
requested for this job but Poppler is not able to convert to
grayscale/monochrome PostScript.
W [04/Feb/2020:21:28:45 +0100] [Job 570] Use \"pdftops-renderer\" option
(see README file) to use Ghostscript or MuPDF for the PDF -> PostScript
conversion.
First, it's really not obvious from the log *which* README this is
about, and I had to dig a little before finding it was the one from
cups-filters.
Then, I tried to set pdftops-renderer-default to various options (gs,
pdftocairo) using:
lpadmin -p printer -o pdftops-renderer-default=<foo>
but it didn't work.
With:
- gs: nothing prints, but nothing happens in the logs
- pdftocairo: same error message than without any option
- pdftops: same error
With mupdf it does send something to the printer but the results shows:
ERROR NAME;
undefined
COMMAND;
°
OPERAND STACK;
and in the logs I get:
W [04/Feb/2020:21:34:29 +0100] [Job 573] Level 3 PostScript not
supported by mutool.
Downgrading to 1.26.2 from testing seems to fix the problem (I still
have the log entry, though, it seems, so maybe it's unrelated).
Regards,
-- System Information:
Debian Release: bullseye/sid
APT prefers unstable-debug
APT policy: (500, 'unstable-debug'), (500, 'unstable'), (450, 'experimental')
Architecture: amd64 (x86_64)
Foreign Architectures: i386
Kernel: Linux 5.4.0-3-amd64 (SMP w/2 CPU cores)
Locale: LANG=fr_FR.utf8, LC_CTYPE=fr_FR.utf8 (charmap=UTF-8), LANGUAGE=fr_FR.utf8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled
Versions of packages cups-filters depends on:
ii bc 1.07.1-2+b2
ii cups-filters-core-drivers 1.27.0-2
ii ghostscript 9.50~dfsg-5
ii libc6 2.29-9
ii libcups2 2.3.1-4
ii libcupsfilters1 1.27.0-2
ii libfontconfig1 2.13.1-2+b1
ii libfontembed1 1.27.0-2
ii libgcc-s1 [libgcc1] 10-20200202-1
ii libgcc1 1:9.2.1-25
ii libqpdf26 9.1.1-1
ii libstdc++6 10-20200202-1
ii poppler-utils 0.71.0-6
Versions of packages cups-filters recommends:
ii colord 1.4.4-1
ii liblouis-bin 3.12.0-3
ii liblouisutdml-bin 2.8.0-3
Versions of packages cups-filters suggests:
pn antiword <none>
pn docx2txt <none>
pn foomatic-db-compressed-ppds | foomatic-db <none>
ii imagemagick 8:6.9.10.23+dfsg-2.1+b2
ii imagemagick-6.q16 [imagemagick] 8:6.9.10.23+dfsg-2.1+b2
-- Configuration Files:
/etc/modules-load.d/cups-filters.conf changed:
-- no debconf information
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