package libsane 1.0.25+git20150528-1ubuntu2 [modified: lib/udev/rules.d/40-libsane.rules] failed to install/upgrade: trying to overwrite shared '/lib/udev/rules.d/40-libsane.rules', which is different from other instances of package libsane:i386

[Raveendranath]

***********
to get a workaround, try:

sudo apt-get -o Dpkg::Options::="--force-overwrite" install --reinstall libsane1:i386 (or your real package name)

***************

sane-backends-extras

ProblemType: Package
DistroRelease: Ubuntu 15.10
Package: libsane 1.0.25+git20150528-1ubuntu2 [modified: lib/udev/rules.d/40-libsane.rules]
ProcVersionSignature: Ubuntu 4.2.0-23.28-generic 4.2.6
Uname: Linux 4.2.0-23-generic x86_64
ApportVersion: 2.19.1-0ubuntu5
Architecture: amd64
Date: Wed Jan 13 23:33:09 2016
DuplicateSignature: package:libsane:1.0.25+git20150528-1ubuntu2 [modified: lib/udev/rules.d/40-libsane.rules]:trying to overwrite shared '/lib/udev/rules.d/40-libsane.rules', which is different from other instances of package libsane:i386
ErrorMessage: trying to overwrite shared '/lib/udev/rules.d/40-libsane.rules', which is different from other instances of package libsane:i386
InstallationDate: Installed on 2015-12-22 (22 days ago)
InstallationMedia: Ubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021)
RelatedPackageVersions:
 dpkg 1.18.2ubuntu5.1
 apt 1.0.10.2ubuntu1
SourcePackage: sane-backends
Title: package libsane 1.0.25+git20150528-1ubuntu2 [modified: lib/udev/rules.d/40-libsane.rules] failed to install/upgrade: trying to overwrite shared '/lib/udev/rules.d/40-libsane.rules', which is different from other instances of package libsane:i386
UpgradeStatus: No upgrade log present (probably fresh install)

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Guy Taylor (thebiggerguy)]

I ran into this when installing an i386 sane backend on a x64 install

running "sudo apt-get install --reinstall libsane:i386" fixed the issue.

[Emmanuel JL (ejl-o)]

"sudo apt-get install --reinstall libsane:i386"

Did not fix for me on 16.04. Received same error in terminal after running

Unpacking libsane:i386 (1.0.25+git20150528-1ubuntu2) ...
dpkg: error processing archive /var/cache/apt/archives/libsane_1.0.25+git20150528-1ubuntu2_i386.deb (--unpack):
 trying to overwrite shared '/lib/udev/rules.d/40-libsane.rules', which is different from other instances of package libsane:i386
Errors were encountered while processing:
 /var/cache/apt/archives/libsane_1.0.25+git20150528-1ubuntu2_i386.deb
E: Sub-process /usr/bin/dpkg returned an error code (1)

[Rolf Leggewie (r0lf)]

google only finds a bunch of bug reports for "failed to install/upgrade: trying to overwrite shared" but no explanation.

bug 1533780
bug 1574351
bug 1279192
bug 1490282
bug 1290155
bug 1464735
bug 1471677

Could be an issue of a missing "Replaces"-declaration somewhere. Possibly related to multiarch, too. https://bugs.launchpad.net/ubuntu/+source/icedtea-web/+bug/1471677/comments/3 strongly suggests this.

[Rolf Leggewie (r0lf)]

bug 1528678 and bug 1533780 are very similar

[Adam Conrad (adconrad)]

sane-backends (1.0.27-1~experimental3ubuntu2) bionic; urgency=medium

  * debian/rules: Drop timestamps from conflicting multiarch:same files
    hwdb.d/20-sane.hwdb and rules.d/60-libsane1.rules (closes: #880391)

 -- Adam Conrad <email address hidden> Sat, 03 Feb 2018 14:26:39 -0700