I added precise-updates back into my sources.list and pinned cups-filters to version 1.0.18-0ubuntu0.1. After reinstalling the pinned version, the only difference in packages was the addition of its older dependency, libpoppler19 (and its dependency libtiff4). So that tells me the problem must be in cups-filters (or maybe libpoppler19 or libtiff4).
To anybody else wanting to try: I attempted what I believe to be a safe downgrade by first uninstalling it, pinning it, then reinstalling it. However, in retrospect that didn't seem to be necessary in this case; simply pinning it and updating would probably work fine (however I don't recommend anybody ever attempt downgrades unless they know exactly what they are doing ... and I don't).
My /etc/apt/sources.list.d/ubuntu-precise.list
deb http://archive.ubuntu.com/ubuntu/ precise-updates main restricted universe multiverse
My /etc/apt/preferences.d/cups-filters-minolta-bizhub
Package: cups-filters
Pin: version 1.0.18*
Pin-Priority: 1005
This was affecting me as well with a Konica Minolta bizhub C360.
The problem seems to be in the cups-filters package.
As per the recommendation in a post (https:/ /bbs.archlinux. org/viewtopic. php?pid= 1226864# p1226864), I pinned cups-filters to the version in precise-updates and it fixed the problem. Yah! No more angry looks from coworkers!
I added precise-updates back into my sources.list and pinned cups-filters to version 1.0.18-0ubuntu0.1. After reinstalling the pinned version, the only difference in packages was the addition of its older dependency, libpoppler19 (and its dependency libtiff4). So that tells me the problem must be in cups-filters (or maybe libpoppler19 or libtiff4).
To anybody else wanting to try: I attempted what I believe to be a safe downgrade by first uninstalling it, pinning it, then reinstalling it. However, in retrospect that didn't seem to be necessary in this case; simply pinning it and updating would probably work fine (however I don't recommend anybody ever attempt downgrades unless they know exactly what they are doing ... and I don't).
My /etc/apt/ sources. list.d/ ubuntu- precise. list archive. ubuntu. com/ubuntu/ precise-updates main restricted universe multiverse
deb http://
My /etc/apt/ preferences. d/cups- filters- minolta- bizhub
Package: cups-filters
Pin: version 1.0.18*
Pin-Priority: 1005