[Bug 2043820] Re: Unable to contact snap store on Xubuntu from Jammy to Noble

[Nick Rosbrook]

I think a viable workaround for this, and something we can implement as
a quirk in ubuntu-release-upgrader, is to disable the systemd-resolved
stub resolver during the upgrade. This will leave behind a
"traditional", usable /etc/resolv.conf even after systemd-resolved is
gone.

That should allow the snap store connectivity check to succeed.

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

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

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

** Changed in: ubuntu-release-upgrader (Ubuntu Noble)
     Assignee: (unassigned) => Nick Rosbrook (enr0n)

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https://bugs.launchpad.net/bugs/2043820

Title:
  Unable to contact snap store on Xubuntu from Jammy to Noble

Status in firefox package in Ubuntu:
  Confirmed
Status in snapd package in Ubuntu:
  Confirmed
Status in ubuntu-release-upgrader package in Ubuntu:
  Invalid
Status in firefox source package in Noble:
  Confirmed
Status in snapd source package in Noble:
  Confirmed
Status in ubuntu-release-upgrader source package in Noble:
  Triaged

Bug description:
  When running `do-release-upgrade -d` on Jammy Xubuntu, the upgrade
  fails consistently at the `Installing the firefox snap` step.

  This was first detected on Jenkins [1], then reproduced locally with
  `auto-upgrade-testing`, then finally by manually running a `do-
  release-upgrade -d` in a VM.

  [1]: https://platform-qa-jenkins.ps5.ubuntu.com/view/upgrade-
  list/job/upgrade_ubuntu-jammy-noble-xubuntu-amd64_qemu/7/consoleFull
  (Jenkins full log attached)

  ProblemType: Bug
  DistroRelease: Ubuntu 22.04
  Package: ubuntu-release-upgrader-core 1:22.04.17
  ProcVersionSignature: User Name 5.15.0-88.98-generic 5.15.126
  Uname: Linux 5.15.0-88-generic x86_64
  ApportVersion: 2.20.11-0ubuntu82.5
  Architecture: amd64
  CasperMD5CheckResult: unknown
  CrashDB: ubuntu
  CurrentDesktop: XFCE
  Date: Fri Nov 17 18:24:22 2023
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  Symptom: ubuntu-release-upgrader
  UpgradeStatus: No upgrade log present (probably fresh install)

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