Public bug reported:
Evince used to have no problem showing a grayscale djvu file. Version
3.22.1 was fine. Now evince version 3.38.2 presents an error: 'Unable to
open document "grayscale_sample.djvu". File type DjVu image
(image/gnd.djvu) is not supported.' Now evince can only render bilevel
DjVu images.
To reproduce, start with a grayscale *.pgm file. Use ImageMagick if
needed to obtain one, as follows:
$ convert logo: sample_grayscale.pgm
Convert to djvu:
$ c44 sample_grayscale.pgm sample_grayscale.djvu
Finally:
$ evince sample_grayscale.djvu
(broken)
** Affects: evince (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1936953
Title:
evince no longer renders grayscale DjVu docs
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