[Bug 2150451] Re: Sshd died during 24.04 to 26.04 upgrade

[Simon Johnsson]

Hmm that may be related to it? I would not expect dpkg-divert to affect
files already loaded however, and the deactivations of
ssh.{service,socket} shouldn't directly drop the existing connection
either.

The upgrade included a few transitions that may affect ssh like libc6,
libssl3t64, systemd, and openssl-provider-legacy (new in Resolute). I
wonder if one of these changes happened in a weird place and somehow
killed the connection, although the journalctl logs do not seem to
suggest any explicit errors.

I'm unable to directly reproduce this, but it's too early to say whether
more users may be affected by the problem.

I noticed that the screen log last showed a prompt. Were you able to
input anything or was the upgrade left to run by itself?

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https://bugs.launchpad.net/bugs/2150451

Title:
  Sshd died during 24.04 to 26.04 upgrade

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

Bug description:
  I did a do-release-upgrade -d over ssh.

  Both the normal port ssh runs on as well as the backup port in case of a problem died.
  The next morning I used a console to run apt -f install / dpkg --configure -a to finish the upgrade.

  In the end I got it up and running, but I wouldn't expect sshd to die.

  ProblemType: Bug
  DistroRelease: Ubuntu 26.04
  Package: ubuntu-release-upgrader-core 1:26.04.18
  ProcVersionSignature: Ubuntu 7.0.0-14.14-generic 7.0.0
  Uname: Linux 7.0.0-14-generic x86_64
  ApportVersion: 2.34.0-0ubuntu2
  Architecture: amd64
  CasperMD5CheckResult: unknown
  CloudArchitecture: x86_64
  CloudID: none
  CloudName: none
  CloudPlatform: none
  CloudSubPlatform: config
  CrashDB: ubuntu
  Date: Mon Apr 27 08:10:56 2026
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to resolute on 2026-04-27 (0 days ago)

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