[Bug 1995896] Re: upgrade fails when using mirror:// URIs in /etc/apt/sources.list

[Nick Rosbrook]

Hi Lars,

This is due to your use of mirror://mirrors.ubuntu.com/mirrors.txt in
your /etc/apt/sources.list. When ubuntu-release-upgrader checks if your
current mirror is reachable, it does not know how to check mirror://
URIs.

As a workaround, please use a single mirror (e.g.
http://no.archive.ubuntu.com/ubuntu) in your /etc/apt/sources.list, and
then do the upgrade. You should be able to switch back to
mirrors://mirrors.ubuntu.com/mirrors.txt after the upgrade.

** Changed in: ubuntu-release-upgrader (Ubuntu)
       Status: New => Triaged

** Changed in: ubuntu-release-upgrader (Ubuntu)
   Importance: Undecided => Low

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https://bugs.launchpad.net/bugs/1995896

Title:
  upgrade fails when using mirror:// URIs in /etc/apt/sources.list

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

Bug description:
  Complains about missing eddential package ubuntu-minimal

  ProblemType: Bug
  DistroRelease: Ubuntu 20.04
  Package: ubuntu-release-upgrader-core 1:20.04.39
  ProcVersionSignature: Ubuntu 5.4.0-131.147-generic 5.4.210
  Uname: Linux 5.4.0-131-generic x86_64
  ApportVersion: 2.20.11-0ubuntu27.24
  Architecture: amd64
  CasperMD5CheckResult: skip
  CrashDB: ubuntu
  Date: Mon Nov  7 21:41:35 2022
  InstallationDate: Installed on 2019-12-01 (1072 days ago)
  InstallationMedia: Ubuntu 19.10 "Eoan Ermine" - Release amd64 (20191017)
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to focal on 2022-11-07 (0 days ago)
  VarLogDistupgradeAptlog:
   Log time: 2022-11-07 21:41:02.055467
   Log time: 2022-11-07 21:41:08.994729
   Log time: 2022-11-07 21:41:34.738654
   Log time: 2022-11-07 21:41:40.020475

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