Can't upgrade using gui tool or do-release-upgrade

[David Gross]

Both do-release-upgrade and the gui Upgrade button result in an "abort".

Running Ubuntu 18.04 LTS with Mate Desktop

Trying to upgrade to 20.04 LTS

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: ubuntu-release-upgrader-core 1:18.04.38
ProcVersionSignature: Ubuntu 4.15.0-118.119-generic 4.15.18
Uname: Linux 4.15.0-118-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.17
Architecture: amd64
CrashDB: ubuntu
Date: Tue Oct 6 16:24:24 2020
InstallationDate: Installed on 2018-02-04 (975 days ago)
InstallationMedia: Ubuntu-MATE 16.04.3 LTS "Xenial Xerus" - Release amd64 (20170801)
PackageArchitecture: all
ProcEnviron:
 LANGUAGE=en_US
 TERM=xterm-color
 PATH=(custom, no user)
 LANG=en_US.utf8
 SHELL=/bin/bash
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: Upgraded to bionic on 2020-10-06 (0 days ago)
VarLogDistupgradeAptlog:
 Log time: 2020-10-06 16:24:03.389106
 Log time: 2020-10-06 16:24:12.038204
 Log time: 2020-10-06 16:24:24.479132
 Log time: 2020-10-06 16:24:25.317610

[David Gross (mtcycler90)]

I was able to get it to work by commenting out all the security.ubuntu.com apt source list lines.

Very odd...

[Brian Murray (brian-murray)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. This particular bug has already been reported and is a duplicate of bug 1813354, so it is being marked as such. Please look at the other bug report to see if there is any missing information that you can provide, or to see if there is a workaround for the bug. Additionally, any further discussion regarding the bug should occur in the other report. Please continue to report any other bugs you may find.