libsane1 is marked as "Multi-Arch: same", but the contents of /lib/udev/hwdb.d/20-sane.hwdb are different among architectures:
$ dpkg-deb --control /var/cache/apt/archives/libsane1_1.0.27-1~experimental2ubuntu1_amd64.deb amd64/ $ dpkg-deb --control /var/cache/apt/archives/libsane1_1.0.27-1~experimental2ubuntu1_i386.deb i386/ $ grep 20-sane.hwdb amd64/md5sums 822a0103c173599c49c01c41e7431450 lib/udev/hwdb.d/20-sane.hwdb $ grep 20-sane.hwdb i386/md5sums ed74da55eee3cbfee774e04f55669d28 lib/udev/hwdb.d/20-sane.hwdb So, this is a bug in this package's packaging. I'll change the header to reflect this. ** Summary changed: - package libsane1 1.0.27-1~experimental2ubuntu1 failed to install/upgrade: trying to overwrite shared '/lib/udev/hwdb.d/20-sane.hwdb', which is different from other instances of package libsane1:i386 + package libsane1 1.0.27-1~experimental2ubuntu1: multiarch packages with differing files -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to sane-backends in Ubuntu. https://bugs.launchpad.net/bugs/1725928 Title: package libsane1 1.0.27-1~experimental2ubuntu1: multiarch packages with differing files Status in sane-backends package in Ubuntu: Confirmed Bug description: apport error this morning. ProblemType: Package DistroRelease: Ubuntu 17.10 Package: libsane1 1.0.27-1~experimental2ubuntu1 ProcVersionSignature: Ubuntu 4.13.0-16.19-generic 4.13.4 Uname: Linux 4.13.0-16-generic x86_64 NonfreeKernelModules: nvidia_uvm nvidia_drm nvidia_modeset nvidia ApportVersion: 2.20.7-0ubuntu3 Architecture: amd64 Date: Sun Oct 22 09:37:46 2017 DuplicateSignature: package:libsane1:1.0.27-1~experimental2ubuntu1 Unpacking libsane1:i386 (1.0.27-1~experimental2ubuntu1) ... dpkg: error processing archive /tmp/apt-dpkg-install-edJWJn/5-libsane1_1.0.27-1~experimental2ubuntu1_i386.deb (--unpack): trying to overwrite shared '/lib/udev/hwdb.d/20-sane.hwdb', which is different from other instances of package libsane1:i386 ErrorMessage: trying to overwrite shared '/lib/udev/hwdb.d/20-sane.hwdb', which is different from other instances of package libsane1:i386 InstallationDate: Installed on 2016-10-08 (378 days ago) InstallationMedia: Ubuntu 16.04.1 LTS "Xenial Xerus" - Release amd64 (20160719) Python3Details: /usr/bin/python3.6, Python 3.6.3, python3-minimal, 3.6.3-0ubuntu2 PythonDetails: /usr/bin/python2.7, Python 2.7.14, python-minimal, 2.7.14-2ubuntu1 RelatedPackageVersions: dpkg 1.18.24ubuntu1 apt 1.5 SourcePackage: sane-backends Title: package libsane1 1.0.27-1~experimental2ubuntu1 failed to install/upgrade: trying to overwrite shared '/lib/udev/hwdb.d/20-sane.hwdb', which is different from other instances of package libsane1:i386 UpgradeStatus: Upgraded to artful on 2017-10-20 (1 days ago) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/sane-backends/+bug/1725928/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
