[Bug 1175251] Re: kubuntu upgrade from 12.10 to 13.04 leaves system unusable

[janl]

My update log also shows that qdbus:i386 was installed - on my amd64
system.  Fixing that might have been enough.

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https://bugs.launchpad.net/bugs/1175251

Title:
  kubuntu upgrade from 12.10 to 13.04 leaves system unusable

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

Bug description:
  Not sure how to file this: it's for the do-release-upgrade process for
  kubuntu from 12.10 to 13.04.

  After upgrading the login manager came up fine. When logging in there
  was a message about qdbus from startkde:

  if qdbus >/dev/null 2>/dev/null; then
      : # ok
  else
      echo 'startkde: Could not start D-Bus. Can you call qdbus?'  1>&2
      test -n "$ksplash_pid" && kill "$ksplash_pid" 2>/dev/null
      xmessage -geometry 500x100 "Could not start D-Bus. Can you call qdbus?"
      exit 1
  fi

  The xmessage one.  invoking qdbus by hand on a text console gave a
  message I can't remember.  Strace seemed to show that it was looking
  for something it did not find.  This led me to look at qtchooser which
  also did not work. "qtchooser -list-versions" listed nothing.

  I tried to use apt-file to find the directories it looked in (found by
  strace).  Then I tried to install qt5-default.  Then the message
  changed to qdbus binary missing from some library directory specific
  to qt5.

  When i installed qt4-default and reinstalled qdbus it was possible to
  log in.

  Kind of high threshold to get the upgraded machine to work.

  Now upgrading a kubuntu VM with much fewer packages installed, I'll
  post here what I learn.

  ProblemType: Bug
  DistroRelease: Ubuntu 13.04
  Package: ubuntu-release-upgrader-core 1:0.192.10
  ProcVersionSignature: Ubuntu 3.8.0-19.29-generic 3.8.8
  Uname: Linux 3.8.0-19-generic x86_64
  ApportVersion: 2.9.2-0ubuntu8
  Architecture: amd64
  CrashDB: ubuntu
  Date: Wed May  1 18:39:31 2013
  MarkForUpload: True
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to raring on 2013-05-01 (0 days ago)

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