[Bug 1906119] [NEW] attempted release upgrade - got "unresolvable problem occurred while calculating the upgrade"

[Martouf]

Public bug reported:

Odroid N2 with Ubuntu 18.04.5 LTS attempted release upgrade to 20.04 LTS
arch is aarch64 (arm64)

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: ubuntu-release-upgrader-core 2:18.04.38 [origin: unknown]
Uname: Linux 4.9.230-76 aarch64
ApportVersion: 2.20.9-0ubuntu7.20
Architecture: arm64
CrashDB: ubuntu
Date: Sat Nov 28 19:26:23 2020
PackageArchitecture: all
ProcEnviron:
 TERM=xterm
 PATH=(custom, no user)
 SHELL=/bin/bash
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: Upgraded to bionic on 2020-11-28 (0 days ago)
VarLogDistupgradeLspcitxt:

** Affects: ubuntu-release-upgrader (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: apport-bug arm64 bionic dist-upgrade third-party-packages

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https://bugs.launchpad.net/bugs/1906119

Title:
  attempted release upgrade - got "unresolvable problem occurred while
  calculating the upgrade"

Status in ubuntu-release-upgrader package in Ubuntu:
  New

Bug description:
  Odroid N2 with Ubuntu 18.04.5 LTS attempted release upgrade to 20.04 LTS
  arch is aarch64 (arm64)

  ProblemType: Bug
  DistroRelease: Ubuntu 18.04
  Package: ubuntu-release-upgrader-core 2:18.04.38 [origin: unknown]
  Uname: Linux 4.9.230-76 aarch64
  ApportVersion: 2.20.9-0ubuntu7.20
  Architecture: arm64
  CrashDB: ubuntu
  Date: Sat Nov 28 19:26:23 2020
  PackageArchitecture: all
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   SHELL=/bin/bash
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to bionic on 2020-11-28 (0 days ago)
  VarLogDistupgradeLspcitxt:

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