Public bug reported:
I'm using Software Updater to attempt an upgrade to Ubuntu 15. In Step
2 of the upgrade ("Setting new software channels") it returns this
error:
Could not calculate 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.
Of the three causes listed:
* Upgrading to a pre-release version of Ubuntu
- I don't believe 15 is in pre-release, right?
* Running the current pre-release version of Ubuntu
- I am not. However, I did upgrade to 14.04 from 12.10; would this have an
impact?
* Unofficial software packages not provided by Ubuntu
- In the Software Update options I unchecked everything.
Any advice appreciated.
ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: ubuntu-release-upgrader-core 1:0.220.8
ProcVersionSignature: Ubuntu 3.13.0-91.138-generic 3.13.11-ckt39
Uname: Linux 3.13.0-91-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.21
Architecture: amd64
CrashDB: ubuntu
CurrentDesktop: Unity
Date: Tue Jul 12 22:27:46 2016
InstallationDate: Installed on 2013-05-18 (1151 days ago)
InstallationMedia: Ubuntu 12.04.2 LTS "Precise Pangolin" - Release amd64
(20130213)
PackageArchitecture: all
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: Upgraded to trusty on 2016-07-12 (0 days ago)
VarLogDistupgradeTermlog:
mtime.conffile..etc.update.manager.release.upgrades: 2016-07-12T22:23:07.538281
** Affects: ubuntu-release-upgrader (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug dist-upgrade third-party-packages trusty
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https://bugs.launchpad.net/bugs/1602429
Title:
Crash when upgrading from 14.04 to 15 "Willy Werefolf": "Could not
calculate the upgrade"
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