Public bug reported:
I ran the software updater and then chose to upgrade to 14.10. I'm on
14.04.
During the "Setting new software channels" step I get an information
dialog that:
"Third party sources disabled
Some third party entries in your sources.list were disabled. You can re-
enable them after the upgrade with the 'software-properties' tool or
your package manager."
The upgrade seems to continue okay after that for a while, but then
(still in the "Setting new software channels" step) I'm told that:
"Could not determine the upgrade
An unresolvable problem occurred while calculating the upgrade.
This can be caused by:
* Upgrading to a pre-release version of Ubuntu
* Running the current pre-release version of Ubuntu
* Unofficial software packages not provided by Ubuntu
If none of this applies, then please report this bug using the command
'ubuntu-bug ubuntu-release-upgrader-core' in a terminal."
I haven't upgraded to a pre-release version of Ubuntu, nor am I running
the current pre-release version of Ubuntu. I'm sure I've got all sorts
of unofficial software packages installed, but I'd need the installer to
give me some more information about what's caused the problem before I'm
going to go digging around looking for the culprit :-)
ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: ubuntu-release-upgrader-core 1:0.220.6
ProcVersionSignature: Ubuntu 3.13.0-43.72-generic 3.13.11.11
Uname: Linux 3.13.0-43-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.6
Architecture: amd64
CrashDB: ubuntu
CurrentDesktop: Unity
Date: Wed Dec 31 09:59:28 2014
InstallationDate: Installed on 2012-11-24 (766 days ago)
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64
(20120425)
PackageArchitecture: all
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: Upgraded to trusty on 2014-12-31 (0 days ago)
VarLogDistupgradeTermlog:
mtime.conffile..etc.update.manager.release.upgrades: 2014-10-28T22:02:09.340817
** Affects: ubuntu-release-upgrader (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug dist-upgrade trusty
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https://bugs.launchpad.net/bugs/1406740
Title:
Failed when trying to upgrade from 14.04 to 14.10 with "Could not
determine the upgrade"
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