Kubuntu release upgrade crash when trying to show debconf dialog

Bug #1561786 reported by Philip Muškovac
This bug affects 4 people
Affects Status Importance Assigned to Milestone
ubuntu-release-upgrader (Ubuntu)

Bug Description

It looks like the KDE ui crashed when trying to show the differences for a config file

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: ubuntu-release-upgrader-core 1:16.04.8
ProcVersionSignature: Ubuntu 4.2.0-16.19-generic 4.2.3
Uname: Linux 4.2.0-16-generic x86_64
ApportVersion: 2.20-0ubuntu3
Architecture: amd64
CrashDB: ubuntu
Date: Fri Mar 25 00:39:20 2016
InstallationDate: Installed on 2015-11-22 (123 days ago)
InstallationMedia: Kubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021)
PackageArchitecture: all
SourcePackage: ubuntu-release-upgrader
Symptom: ubuntu-release-upgrader
UpgradeStatus: Upgraded to xenial on 2016-03-24 (0 days ago)

Revision history for this message
Philip Muškovac (yofel) wrote :
Philip Muškovac (yofel)
Changed in ubuntu-release-upgrader (Ubuntu):
milestone: none → ubuntu-16.04
tags: added: kubuntu
Revision history for this message
Ubuntu QA Website (ubuntuqa) wrote :

This bug has been reported on the Ubuntu ISO testing tracker.

A list of all reports related to this bug can be found here:

tags: added: iso-testing
Revision history for this message
Launchpad Janitor (janitor) wrote :

Status changed to 'Confirmed' because the bug affects multiple users.

Changed in ubuntu-release-upgrader (Ubuntu):
status: New → Confirmed
Revision history for this message
Mike (mike-petersen-web) wrote :

I had the same issue during update from 15.10. I needed to kill the dpkg progress and continue the upgrade manually.

Revision history for this message
Ferry Toth (ftoth) wrote :

@Mike I had that too on multiple machines. Not sure if it is the same bug though. I believe the problem was that sane.conf needed confirmation to replace or keep, but the dialog box didn't appear, causing the upgrade to stall and no way to continue. The solution was to kill, manually continue. And then of course manually clean up, sigh.

I had that less than one month ago upgrading our main server to 15.10 and hoping that it had been fixed, but no.

Revision history for this message
Ferry Toth (ftoth) wrote :
Revision history for this message
Xavier Aragon (xarax-lp) wrote :

This might be a duplicate of bug #1509655. If /var/log/dist-upgrade/main.log ends with a python backtrace pointing to DistUpgradeViewKDE.py line 339, it is the same problem.

Revision history for this message
Brian Murray (brian-murray) wrote :

It is a duplicate, the traceback can be found in VarLogDistupgradeMainlog.txt.

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