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-- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to less in Ubuntu. https://bugs.launchpad.net/bugs/1874953 Title: dpkg: conffile difference visualizer subprocess returned error exit status 127 Status in dpkg package in Ubuntu: Invalid Status in less package in Ubuntu: Fix Released Status in smartmontools package in Ubuntu: Invalid Status in dpkg source package in Focal: Invalid Status in less source package in Focal: Fix Committed Status in smartmontools source package in Focal: Invalid Status in dpkg source package in Groovy: Invalid Status in less source package in Groovy: Fix Released Status in smartmontools source package in Groovy: Invalid Status in dpkg package in Debian: New Status in less package in Debian: Fix Committed Bug description: [Impact] During a release upgrade to Ubuntu 20.04 LTS some users are not able to view the differences made to a configuration file during the upgrade process. This creates a bad user experience and leads to extra crash reports. [Test Case] 1) Upgrade from a not usr-merged system (Ubuntu 16.04 LTS) to Ubuntu 18.04 LTS 2) Install the smartmontools package 3) Edit /etc/default/smartmontools (it's enough to just add a comment in there) 4) Upgrade to Ubuntu 20.04 LTS (this requires do-release-upgrade -d as 20.04.1 is not out yet so release upgrades are not enabled) To test the fix in the version of less from focal-proposed some hackery of the release upgrader code will be necessary as it disables proposed during the upgrade process. After enabling -proposed for bionic you'll want to run do-release-upgrade -d, then cancel the upgrade. After which you can cd to /tmp/ubuntu-release- upgrader-$MKTMPDIR and edit DistUpgradeController.py and the if statement around line 641 re "Disable proposed on upgrade to a development release". Then run 'sudo ./focal'. [Regression Potential] None, as we are just calling update-alternatives in the preinst of less. Issue occurred on upgrade from 19.10 to 20.04 ProblemType: PackageDistroRelease: Ubuntu 20.04 Package: smartmontools 7.1-1build1 ProcVersionSignature: Ubuntu 5.3.0-46.38-generic 5.3.18 Uname: Linux 5.3.0-46-generic x86_64 ApportVersion: 2.20.11-0ubuntu27 Architecture: amd64 CasperMD5CheckResult: skip Date: Fri Apr 24 21:33:08 2020 ErrorMessage: conffile difference visualizer subprocess returned error exit status 127 InstallationDate: Installed on 2011-06-18 (3233 days ago)InstallationMedia: Ubuntu-Server 11.04 "Natty Narwhal" - Release amd64 (20110426) Python3Details: /usr/bin/python3.8, Python 3.8.2, python3-minimal, 3.8.2-0ubuntu2 PythonDetails: /usr/bin/python2.7, Python 2.7.18rc1, python-is-python2, 2.7.17-4 RelatedPackageVersions: dpkg 1.19.7ubuntu3 apt 2.0.2SourcePackage: smartmontools Title: package smartmontools 7.1-1build1 failed to install/upgrade: conffile difference visualizer subprocess returned error exit status 127 UpgradeStatus: Upgraded to focal on 2020-04-25 (0 days ago) mtime.conffile..etc.default.smartmontools: 2017-12-08T19:12:02.064375 mtime.conffile..etc.smartd.conf: 2017-12-08T20:27:28.727282 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/dpkg/+bug/1874953/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : firstname.lastname@example.org Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp