[Bug 2012679] [NEW] cannot upgrade from impish to jammy jellyfish, updates are broken

[Jamie Kalmbach]

Public bug reported:

I have been unable to update kubuntu, error states that the repository impish... has no relase date and updating has been disabled. I am attempting to upgrade to jammy jellyfish, and it gave me the error and bug report instructions.
1. ubuntu 21.10
release 21.10
2. the apt-cache command returned unable to locate
3. I expected to upgrade
4. I got the bug error report instructions

ProblemType: Bug
DistroRelease: Ubuntu 21.10
Package: ubuntu-release-upgrader-core 1:21.10.9
ProcVersionSignature: Ubuntu 5.13.0-46.51-generic 5.13.19
Uname: Linux 5.13.0-46-generic x86_64
ApportVersion: 2.20.11-0ubuntu71.2
Architecture: amd64
CasperMD5CheckResult: pass
CrashDB: ubuntu
CurrentDesktop: KDE
Date: Thu Mar 23 15:12:10 2023
InstallationDate: Installed on 2022-04-16 (341 days ago)
InstallationMedia: Kubuntu 21.10 "Impish Indri" - Release amd64 (20211012)
PackageArchitecture: all
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: Upgraded to impish on 2023-03-23 (0 days ago)
VarLogDistupgradeTermlog:

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


** Tags: amd64 apport-bug dist-upgrade impish third-party-packages

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https://bugs.launchpad.net/bugs/2012679

Title:
  cannot upgrade from impish to jammy jellyfish, updates are broken

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

Bug description:
  I have been unable to update kubuntu, error states that the repository impish... has no relase date and updating has been disabled. I am attempting to upgrade to jammy jellyfish, and it gave me the error and bug report instructions.
  1. ubuntu 21.10
  release 21.10
  2. the apt-cache command returned unable to locate
  3. I expected to upgrade
  4. I got the bug error report instructions

  ProblemType: Bug
  DistroRelease: Ubuntu 21.10
  Package: ubuntu-release-upgrader-core 1:21.10.9
  ProcVersionSignature: Ubuntu 5.13.0-46.51-generic 5.13.19
  Uname: Linux 5.13.0-46-generic x86_64
  ApportVersion: 2.20.11-0ubuntu71.2
  Architecture: amd64
  CasperMD5CheckResult: pass
  CrashDB: ubuntu
  CurrentDesktop: KDE
  Date: Thu Mar 23 15:12:10 2023
  InstallationDate: Installed on 2022-04-16 (341 days ago)
  InstallationMedia: Kubuntu 21.10 "Impish Indri" - Release amd64 (20211012)
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to impish on 2023-03-23 (0 days ago)
  VarLogDistupgradeTermlog:

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