Steve, it seems that the Postscript generator of Evince assumes from the
font which it is using here that the font contains special characters
for ligatures, but the font actually used does not contain these
characters. The PostScript generator has to determine reliably whether
the fonts to be used have ligatures or not.

Adobe Reader seems to install fonts into the system so that they are
available system-wide (which means also other programs make use of them)
and some fonts have the same name as already installed system fonts but
in contrary to the system fonts they have no ligature characters. By
entries in config files or by priority order of font directories the
Adobe fonts get priority. Probably the PostScript generator of Evince
does not recognize this and uses the metadata of the original Ubuntu
fonts telling that there are ligature characters. So the PostScript
generator needs to be fixed that it uses always the metadata of the font
actually in use and also that it embeds fonts, to avoid the actual use
of different fonts, like the built-in fonts of a PostScript printer.

-- 
Evince/CUPS Could Not Print Tax Document
https://bugs.launchpad.net/bugs/212017
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