Public bug reported:
have attempted the upgrade every 2-3 days for the past two weeks. have
applied other maintenance than was available. this is a simple,
unmodified Ubuntu 14.04 image installed from the Ubuntu site download in
Dec, 2015. Operating on a Lenovo T500 laptop.
Ubuntu 14.04.3 LTS release 14.04
I get the exact same error each time. First a warning message that
"some download sources are disabled" (no info about which sources and I
only use the options of the SW installer). Then upgrade proceeds until
the "Unable to Calculate" panel is given. Then the upgrade process is
backed-out.
ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: ubuntu-release-upgrader-core 1:0.220.8
ProcVersionSignature: Ubuntu 3.13.0-74.118-generic 3.13.11-ckt30
Uname: Linux 3.13.0-74-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.19
Architecture: amd64
CrashDB: ubuntu
CurrentDesktop: Unity
Date: Wed Jan 13 16:13:15 2016
InstallationDate: Installed on 2014-07-05 (557 days ago)
InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
PackageArchitecture: all
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: Upgraded to trusty on 2016-01-14 (0 days ago)
VarLogDistupgradeTermlog:
mtime.conffile..etc.update.manager.release.upgrades: 2016-01-01T12:41:32.353555
** 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/1533908
Title:
error when upgrading from v14.04 to v15 -- always receiving msg panel
stating: "Could not calculate the upgrade". None of the 3 causes
listed apply
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