UpgradeNotes/UpgradeProblems

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Introduction

This article is outdated. It needs a thorough rewrite (or maybe it is best to delete it and write a new one).

This page tries to collect and describe possible upgrade problems and solutions. Network issues, unreachable hosts, local conditions and other possible problems preventing the Ubuntu distribution upgrade procedure will be addressed. Please help expanding this documentation if you find more information, solutions or workarounds for upgrading Ubuntu.

This page will not deal with application bugs. If the issue is related to bugs in the package manager, upgrade manager or other software, please Report the Problem.

Be aware that some of the informations here are quite technical. If you're unsure about something, please don't hesitate to ask for help on the forums instead of accidentally breaking your Ubuntu installation!

Current dist not found in meta-release file

Affected versions (reported):

Symptoms:

Cause:

Workaround:

Dist: intrepid
Name: Intrepid Ibex
Version: 8.10
Date: Thu, 30 Oct 2008 12:00:00 UTC
Supported: 1
Description: This is the 8.10 release
Release-File: http://archive.ubuntu.com/ubuntu/dists/intrepid/Release
ReleaseNotes: http://archive.ubuntu.com/ubuntu/dists/intrepid/main/dist-upgrader-all/current/ReleaseAnnouncement
UpgradeTool: http://archive.ubuntu.com/ubuntu/dists/intrepid/main/dist-upgrader-all/current/intrepid.tar.gz
UpgradeToolSignature: http://archive.ubuntu.com/ubuntu/dists/intrepid/main/dist-upgrader-all/current/intrepid.tar.gz.gpg

Dist: jaunty
Name: Jaunty Jackalope
Version: 9.04
Date: Thu, 24 Apr 2009 12:00:00 UTC
Supported: 0
Description: This is the 9.04 release
Release-File: http://archive.ubuntu.com/ubuntu/dists/jaunty/Release
ReleaseNotes: http://archive.ubuntu.com/ubuntu/dists/jaunty/main/dist-upgrader-all/current/ReleaseAnnouncement
UpgradeTool: http://archive.ubuntu.com/ubuntu/dists/jaunty/main/dist-upgrader-all/current/jaunty.tar.gz
UpgradeToolSignature: http://archive.ubuntu.com/ubuntu/dists/jaunty/main/dist-upgrader-all/current/jaunty.tar.gz.gpg

The update-manager GUI did not detect the new distribution immediately after this change, but I was able to upgrade successfully by running  sudo do-release-upgrade 

Submitted by: Tybion

Not enough free disk space

Affected versions (reported):

Symptoms:

Cause:

Workaround:

Cannot connect to host: Fetching updates fails

Affected versions (reported):

Symptoms:

Cause:

Example:

Workaround:

Unable to resolve host yourhost

Affected versions (reported):

Symptoms:

Cause:

Workaround:

Very slow application startup after upgrade

Affected versions (reported):

Symptoms:

Cause:

Applications communicate with the X-server over a socket interface. This can be any valid IP address, but typically, the name of the computer is used to find the IP address of the local X-server using a standard name lookup. If the computer's name is not in the hosts file, a network lookup using DNS will be attempted. If this fails, then localhost will be used. When the upgrade qualified the previously unqualified machine name in the hosts file, and then removed the domain name, there was no longer a matching entry in hosts, so a DNS lookup was attempted. The long delay is due to the timeout incurred in waiting for the DNS lookup to fail, finally falling back on localhost and allowing the program to execute.

Solution:

Final Note: While this may only be a problem that shows up in cases where the domain name is set and/or the hosts file has been customized, there may also be many possible variants, all owing to a mismatch between the computer's name and the matching alias entry in hosts.

Submitted by: sbesch@acsu.buffalo.edu

Your Feedback

DuncanLithgow wrote Jul 8, 08: It would be great if the entry 'Cannot connect to host: Fetching updates fails' could be clearer on what message the user gets when they hit this problem. I tried searching Launchpad for variations on the text in the title and didn't find anything matching. Perhaps the entry could start with a code section with the actual error message?

hardmath wrote May 7, 09: It would be nice to add a section on problems with distribution upgrades caused by lack of disk space. I vaguely recall working around this problem in the last iteration by uninstalling some large apps, then reinstalling after the upgrade. But it would be neat if there was a way to use a memory stick temporarily to get over the hump.

Page Maintainers

DuncanLithgow, You?


I purchased a used computer with a fresh installation of Windows XP. I installed Ubuntu with a dual boot option, version 9.04. Immediately had problems with message "Insufficient space" when installing updates.

I also installed Ubuntu 9 on my wife's Dell laptop, which had windows XP and an earlier version of Ubuntu. The same problem occurred, insufficient space for updates.

Something needs to be done to allow default settings to modify partition space so that Ubuntu 9 has sufficient room for updates.


CategoryInstallation

UpgradeProblems (last edited 2011-05-03 22:42:46 by 157-157-187-88)