Public bug reported: I tried to upgrade my ubuntu 16 to 18 but failed.
ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: ubuntu-release-upgrader-core 1:16.04.25 [origin: unknown] ProcVersionSignature: Ubuntu 4.4.0-131.157-generic 4.4.134 Uname: Linux 4.4.0-131-generic x86_64 ApportVersion: 2.20.1-0ubuntu2.18 Architecture: amd64 CrashDB: ubuntu CurrentDesktop: MATE Date: Thu Jul 26 21:31:30 2018 InstallationDate: Installed on 2016-03-21 (857 days ago) InstallationMedia: Ubuntu-MATE 16.04 LTS "Xenial Xerus" - Alpha amd64 (20160127.1) PackageArchitecture: all SourcePackage: ubuntu-release-upgrader UpgradeStatus: Upgraded to xenial on 2018-07-27 (0 days ago) VarLogDistupgradeTermlog: ** Affects: ubuntu-release-upgrader (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug dist-upgrade third-party-packages xenial -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1783958 Title: cannot upgrade from 16 to 18 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/1783958/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs