Public bug reported: It says I don't have an official apt source listed, which I do. The error message was pretty vague, so I'm not sure what information to add. Here's my sources list:
$ cat /etc/apt/sources.list | grep ^d deb mirror://mirrors.ubuntu.com/mirrors.txt bionic main restricted deb mirror://mirrors.ubuntu.com/mirrors.txt bionic-updates main restricted deb mirror://mirrors.ubuntu.com/mirrors.txt bionic universe deb mirror://mirrors.ubuntu.com/mirrors.txt bionic-updates universe deb mirror://mirrors.ubuntu.com/mirrors.txt bionic multiverse deb mirror://mirrors.ubuntu.com/mirrors.txt bionic-updates multiverse deb mirror://mirrors.ubuntu.com/mirrors.txt bionic-backports main restricted universe multiverse deb http://archive.canonical.com/ubuntu bionic partner deb http://security.ubuntu.com/ubuntu bionic-security main restricted deb http://security.ubuntu.com/ubuntu bionic-security universe deb http://security.ubuntu.com/ubuntu bionic-security multiverse deb http://archive.canonical.com/ bionic partner ProblemType: Bug DistroRelease: Ubuntu 18.04 Package: ubuntu-release-upgrader-core 1:18.04.29 ProcVersionSignature: Ubuntu 4.15.0-29.31-generic 4.15.18 Uname: Linux 4.15.0-29-generic x86_64 ApportVersion: 2.20.9-0ubuntu7.5 Architecture: amd64 CrashDB: ubuntu Date: Fri Jan 25 20:38:12 2019 InstallationDate: Installed on 2018-12-27 (28 days ago) InstallationMedia: Ubuntu 18.04.1 LTS "Bionic Beaver" - Release amd64 (20180725) PackageArchitecture: all ProcEnviron: PATH=(custom, no user) LANG=en_US.UTF-8 SHELL=/bin/bash SourcePackage: ubuntu-release-upgrader UpgradeStatus: Upgraded to bionic on 2019-01-25 (0 days ago) VarLogDistupgradeAptlog: Log time: 2019-01-25 20:37:30.492890 Log time: 2019-01-25 20:37:34.539108 Log time: 2019-01-25 20:37:52.534002 Log time: 2019-01-25 20:38:14.661362 VarLogDistupgradeTermlog: mtime.conffile..etc.update-manager.release-upgrades: 2019-01-25T20:36:20.332520 ** Affects: ubuntu-release-upgrader (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug bionic dist-upgrade -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1813354 Title: unable to upgrade 18.04 -> 18.10 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/1813354/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
