Thank you Brian for your response. I will update after trying this solution. Best, Siddhartha
On Tue, Jan 5, 2021 at 4:50 AM Brian Murray <1909...@bugs.launchpad.net> wrote: > You appear to have packages installed from the universe part of the > Ubuntu archive but there is no entry for universe in > /etc/apt/sources.list file. This is likely causing the upgrade to the > new release of Ubuntu to fail. Please re-add universe to your > /etc/apt/soruces.list file install any updates for your current release > of Ubuntu and then try the upgrade again. > > ** Changed in: ubuntu-release-upgrader (Ubuntu) > Status: New => Incomplete > > -- > You received this bug notification because you are subscribed to the bug > report. > https://bugs.launchpad.net/bugs/1909911 > > Title: > Upgrade to 20.04.1 fails > > Status in ubuntu-release-upgrader package in Ubuntu: > Incomplete > > Bug description: > I am trying to upgrade from Ubuntu 18.04 to Ubuntu 20.04.1 using the > "software updater" which prompts me that there is a new LTS release. > > Here is the error message: > == > Could not calculate the upgrade > > An unresolvable problem occurred while calculating the upgrade. > > If none of this applies, then please report this bug using the command > 'ubuntu-bug ubuntu-release-upgrader-core' in a terminal. If you want to > investigate this yourself the log files in '/var/log/dist-upgrade' will > contain details about the upgrade. Specifically, look at 'main.log' and > 'apt.log'. > == > And last few lines from /var/log/dist-upgrade/main.log > == > 2021-01-03 21:07:30,440 DEBUG need_server_mode(): run in 'desktop' mode, > (because of pkg 'ubuntu-desktop') > 2021-01-03 21:07:30,440 DEBUG quirks: running PreDistUpgradeCache > 2021-01-03 21:07:30,440 DEBUG running Quirks.PreDistUpgradeCache > 2021-01-03 21:07:30,441 INFO checking for python-dbg > 2021-01-03 21:07:30,441 INFO checking for python-doc > 2021-01-03 21:07:30,441 INFO checking for python-minimal > 2021-01-03 21:07:30,441 INFO installing python-is-python2 because > python-minimal was installed > 2021-01-03 21:07:30,441 DEBUG Installing 'python-is-python2' > (python-minimal was installed on the system) > 2021-01-03 21:07:30,441 INFO removing python-minimal because > python-is-python2 is being installed > 2021-01-03 21:07:30,441 DEBUG Removing 'python-minimal' > (python-is-python2 is being installed on the system) > == > > Thanks > > ProblemType: Bug > DistroRelease: Ubuntu 18.04 > Package: ubuntu-release-upgrader-core 1:18.04.41 > ProcVersionSignature: Ubuntu 4.15.0-128.131-generic 4.15.18 > Uname: Linux 4.15.0-128-generic x86_64 > ApportVersion: 2.20.9-0ubuntu7.21 > Architecture: amd64 > CrashDB: ubuntu > CurrentDesktop: ubuntu:GNOME > Date: Sun Jan 3 21:07:55 2021 > InstallationDate: Installed on 2018-08-04 (883 days ago) > InstallationMedia: Ubuntu 18.04.1 LTS "Bionic Beaver" - Release amd64 > (20180725) > PackageArchitecture: all > SourcePackage: ubuntu-release-upgrader > UpgradeStatus: Upgraded to bionic on 2021-01-03 (0 days ago) > VarLogDistupgradeTermlog: > > To manage notifications about this bug go to: > > https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/1909911/+subscriptions > -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1909911 Title: Upgrade to 20.04.1 fails To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/1909911/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs