Thank you for taking the time to report this bug and helping to make Ubuntu better. Reviewing your dmesg attachment in this bug report it seems that there is a problem with your hardware. I recommend performing a back up and then investigating the situation. Measures you might take include checking cable connections and using software tools to investigate the health of your hardware. In the event that is is not in fact an error with your hardware please set the bug's status back to New. Thanks and good luck!
[This is an automated message. I apologize if it reached you inappropriately; please just reply to this message indicating so.] ** Tags added: hardware-error ** Changed in: sane-backends (Ubuntu) Importance: Undecided => Low ** Changed in: sane-backends (Ubuntu) Status: New => Invalid -- 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/1796473 Title: package libsane1 1.0.27-1~experimental2ubuntu2.1 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 Status in sane-backends package in Ubuntu: Invalid Bug description: This error occurs everytime what is the solution ProblemType: Package DistroRelease: Ubuntu 17.10 Package: libsane1 1.0.27-1~experimental2ubuntu2.1 ProcVersionSignature: Ubuntu 4.13.0-46.51-generic 4.13.16 Uname: Linux 4.13.0-46-generic x86_64 ApportVersion: 2.20.7-0ubuntu3.9 Architecture: amd64 Date: Fri Oct 5 23:47:19 2018 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 2018-04-26 (162 days ago) InstallationMedia: Ubuntu 17.10 "Artful Aardvark" - Release amd64 (20180105.1) Python3Details: /usr/bin/python3.6, Python 3.6.3, python3-minimal, 3.6.3-0ubuntu3 PythonDetails: /usr/bin/python2.7, Python 2.7.14, python-minimal, 2.7.14-2ubuntu1 RelatedPackageVersions: dpkg 1.18.24ubuntu1 apt 1.5.2 SourcePackage: sane-backends Title: package libsane1 1.0.27-1~experimental2ubuntu2.1 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 2018-09-09 (26 days ago) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/sane-backends/+bug/1796473/+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