distupgrade crashed during conf file change review

This is the error

/usr/bin/python: symbol lookup error: /usr/lib/qt4/plugins/inputmethods/libqimsw-multi.so: undefined symbol: _ZN9QListData11detach_growEPii

So it's trying to load the input method module when the text area gets shown, but the Qt version has already been upgraded so it causes a symbol lookup error.

TEST CASE: do a 10.04 LTS to 10.10 upgrade
with the old DistUpgrade version it will crash when viewing the conffile changes
with the new DistUpgrade version you will be unable to view the conffile changes

Accepted into lucid-proposed, the package will build now and be available in a few hours. Please test and give feedback here. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you in advance!

Accepted into maverick-proposed, the package will build now and be available in a few hours. Please test and give feedback here. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you in advance!

Worked here. Verified the other changes in the proposed update and they are fine too.

This bug was fixed in the package update-manager - 1:0.142.20

---------------
update-manager (1:0.142.20) maverick-proposed; urgency=low

  [ Michael Vogt ]
  * UpdateManager/UpdateManager.py:
    - do not crash if the free space check fails (LP: #656881)
  * DistUpgrade/DistUpgrade.cfg:
    - add blcr-dkms to the "BadVersions" variable. The current blcr-dkms
      source will not build with 2.6.35. Adding it here will cause the
      upgrade to abort with a message if it is installed.
      It also means that if support for 2.6.35 is added to blcr-dkms via
      a SRU that will automatically unblock the upgrade (LP: #555729)
  * DistUpgrade/DistUpgradeViewGtk.py,
    DistUpgrade/DistUpgradeViewKDE.py,:
    - workaround dpkg not sending the correct filename on conffile
      prompts over the status-fd (LP: #656912)

  [ Jonathan Riddell ]
  * DistUpgrade/DistUpgradeViewKDE.py:
    - disable confDialogue.show_difference_button, workaround for
      "distupgrade crashed during conf file change review" (LP: #656876)
      requires release note that user needs to view changes manually on command line
 -- Jonathan Riddell <email address hidden> Sat, 09 Oct 2010 19:08:23 +0100

copied to maverick-updates

I am testing a better workaround which shows then hides a text area at the start of the upgrade process thus loading the IM plugin before Qt gets upgraded

show then hide qtextarea idea didn't work, so we'll go with no conffile review and I'll add a release note

I've been upgrading my machines and ran into this bug and crash. It crashed when I tried to review the changes to my /etc/hdparm.conf file. On my other machines, I reviewed conf file changes without issue, but this was the only machine that I had a customized hdparm.conf file. I'm upgrading using the kubuntu alternate x86 image. I don't think this bug is fully resolved.

OMG, the kpackagekit was on its way doing the upgrade, when I learned about this bug... About 33 minutes remain, then it will crash? Why is there no recommended way to do the dist-upgrade in the old way? Only through the buggy GUI: https://help.ubuntu.com/community/MaverickUpgrades/Kubuntu
This is embarrassing. I regret very much the day I went from Debian to Kubuntu.