Public bug reported:
Running do-release-upgrade gives
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
But none of those causes are applicable.
ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: ubuntu-release-upgrader-core 1:0.220.8
ProcVersionSignature: Ubuntu 3.13.0-30.55-generic 3.13.11.2
Uname: Linux 3.13.0-30-generic i686
NonfreeKernelModules: wl
ApportVersion: 2.14.1-0ubuntu3.19
Architecture: i386
CrashDB: ubuntu
CurrentDesktop: XFCE
Date: Thu Dec 31 23:09:57 2015
EcryptfsInUse: Yes
InstallationDate: Installed on 2001-01-01 (5477 days ago)
InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Release i386 (20130424)
PackageArchitecture: all
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: Upgraded to trusty on 2016-01-01 (0 days ago)
mtime.conffile..etc.update.manager.release.upgrades: 2015-12-31T22:52:58.498299
** Affects: ubuntu-release-upgrader (Ubuntu)
Importance: Undecided
Status: New
** Tags: apport-bug dist-upgrade i386 trusty
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https://bugs.launchpad.net/bugs/1530417
Title:
can't upgrade from 14.04 to 15.04
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