[Bug 1185581] Re: getting tmux version incompatibility message during do-release-upgrade

[Craig Magina]

My server was upgrading from 12.10 to 1304. It had byobu installed and
set to run when I logged in, so when I started the do-release-upgrade it
was from within the byobu session. do-release-upgrade did start its
screen session, but I was unable to connect directly to that (screen
-list didn't list the session but I could see it in the process list,
however I can't remember if I tried as root or not) and the byobu/tmux
session refused to reconnect due to a version incompatibility. I will
reproduce in a VM to ensure I really couldn't get at the screen session
do-release-upgrade started, but the root of the problem seems to be that
I was using byobu(tmux) to launch the do-release-upgrade and there is an
incompatibility between the tmux version in 12.10 and 13.04.

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https://bugs.launchpad.net/bugs/1185581

Title:
  getting tmux version incompatibility message during do-release-upgrade

Status in “ubuntu-release-upgrader” package in Ubuntu:
  Incomplete

Bug description:
  I was upgrading one of my servers, lost connection and later when I
  reconnected I got an error message from tmux/byobu about version
  incompatibility. The upgrade was going from 12.10 to 13.04.

  ProblemType: Bug
  DistroRelease: Ubuntu 13.04
  Package: ubuntu-release-upgrader-core 1:0.192.11
  ProcVersionSignature: Ubuntu 3.8.0-22.33-generic 3.8.11
  Uname: Linux 3.8.0-22-generic x86_64
  ApportVersion: 2.9.2-0ubuntu8
  Architecture: amd64
  CrashDB: ubuntu
  Date: Wed May 29 16:29:09 2013
  EcryptfsInUse: Yes
  InstallationDate: Installed on 2013-05-24 (5 days ago)
  InstallationMedia: Kubuntu 13.04 "Raring Ringtail" - Release amd64 (20130424)
  MarkForUpload: True
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: No upgrade log present (probably fresh install)

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