Comment 0 for bug 1707182

This bug seems similar to:
https://bugs.launchpad.net/bugs/1528678
https://bugs.launchpad.net/bugs/1002005
https://bugs.launchpad.net/bugs/1528678

Contents of /etc/sane.d/v4l.conf which is referenced in the error:
#
# In order to use the v4linux backend you have to give the device
# You can enable multiple lines if
# you really have multible v4l devices.

# Backends disabled, to re-enable unquote the following lines
# See https://bugs.launchpad.net/ubuntu/+source/sane-backends/+bug/87312
#/dev/bttv0
#/dev/video0
#/dev/video1
#/dev/video2
#/dev/video3

ProblemType: Package
DistroRelease: Ubuntu 14.04
Package: libsane (not installed)
ProcVersionSignature: Ubuntu 3.13.0-96.143-generic 3.13.11-ckt39
Uname: Linux 3.13.0-96-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.24
Architecture: amd64
Date: Fri Jul 28 12:18:56 2017
DuplicateSignature: package:libsane:(not installed):trying to overwrite shared '/etc/sane.d/v4l.conf', which is different from other instances of package libsane:amd64
ErrorMessage: trying to overwrite shared '/etc/sane.d/v4l.conf', which is different from other instances of package libsane:amd64
InstallationDate: Installed on 2014-10-04 (1027 days ago)
InstallationMedia: Lubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2)
RelatedPackageVersions:
 dpkg 1.17.5ubuntu5.7
 apt 1.0.1ubuntu2.17
SourcePackage: sane-backends
Title: package libsane (not installed) failed to install/upgrade: trying to overwrite shared '/etc/sane.d/v4l.conf', which is different from other instances of package libsane:amd64
UpgradeStatus: No upgrade log present (probably fresh install)