This was discussed in #ubuntu-meeting on 20180726 and the solution presented was to have the release upgrader do the "right" thing by upgrading your system until you hit an LTS. So if you are running zesty and have "Prompt=lts" set then it would upgrade you to artful, then bionic and then stop because bionic is an LTS release.
** Also affects: software-properties (Ubuntu Cosmic) Importance: Undecided Status: Confirmed ** Also affects: ubuntu-release-upgrader (Ubuntu Cosmic) Importance: Undecided Status: Confirmed ** Tags removed: rls-cc-incoming -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to software-properties in Ubuntu. https://bugs.launchpad.net/bugs/1783328 Title: The option to select LTS notifications should be masked in non-LTS versions Status in software-properties package in Ubuntu: Confirmed Status in ubuntu-release-upgrader package in Ubuntu: Confirmed Status in software-properties source package in Cosmic: Confirmed Status in ubuntu-release-upgrader source package in Cosmic: Confirmed Bug description: I have been bitten by _not_ knowing that selecting "Notify me of a new Ubuntu version: For long-term support versions" in a non-LTS(17.10) software-properties-gtk dialog box would simply silently fail to inform users that they are no longer receiving updates to their Ubuntu installs. Please mask or hide the option to select "For long-term support versions" if the currently running version is a non-LTS version(grep or awk the /etc/os-release file or some-such for the LTS string). It is non-intuitive to see this option as available to select and not receive warning of its hazards. ProblemType: Bug DistroRelease: Ubuntu 18.04 Package: ubuntu-release-upgrader-core 1:18.04.21 ProcVersionSignature: Ubuntu 4.15.0-29.31-generic 4.15.18 Uname: Linux 4.15.0-29-generic x86_64 ApportVersion: 2.20.9-0ubuntu7.2 Architecture: amd64 CrashDB: ubuntu Date: Tue Jul 24 07:30:11 2018 InstallationDate: Installed on 2018-05-21 (64 days ago) InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Release amd64 (20180426) PackageArchitecture: all ProcEnviron: TERM=xterm-256color PATH=(custom, no user) LANG=en_US.UTF-8 SHELL=/bin/bash SourcePackage: ubuntu-release-upgrader UpgradeStatus: No upgrade log present (probably fresh install) mtime.conffile..etc.update-manager.release-upgrades: 2018-05-24T11:23:48.670462 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/software-properties/+bug/1783328/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp