Public bug reported:
sudo do-release-upgrade
Checking for a new Ubuntu release
Get:1 Upgrade tool signature [198 B]
Get:2 Upgrade tool [1 221 kB]
....
Checking package manager
Reading package lists... Done
Building dependency tree
Reading state information... Done
Building data structures... Done
Calculating the changes
Calculating the changes
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.
Restoring original system state
Aborting
Reading package lists... Done
Building dependency tree
Reading state information... Done
Building data structures... Done
ProblemType: Bug
DistroRelease: Ubuntu 14.10
Package: ubuntu-release-upgrader-core 1:14.10.10
ProcVersionSignature: Ubuntu 3.16.0-34.47-generic 3.16.7-ckt8
Uname: Linux 3.16.0-34-generic x86_64
ApportVersion: 2.14.7-0ubuntu8.4
Architecture: amd64
CrashDB: ubuntu
CurrentDesktop: Unity
Date: Fri Apr 24 16:18:44 2015
InstallationDate: Installed on 2014-08-01 (265 days ago)
InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2)
PackageArchitecture: all
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: Upgraded to utopic on 2015-04-24 (0 days ago)
** Affects: ubuntu-release-upgrader (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug dist-upgrade utopic
** Description changed:
sudo do-release-upgrade
- sudo do-release-upgrade
Checking for a new Ubuntu release
- Get:1 Upgrade tool signature [198 B]
- Get:2 Upgrade tool [1 221 kB]
+ Get:1 Upgrade tool signature [198 B]
+ Get:2 Upgrade tool [1 221 kB]
....
Checking package manager
- Reading package lists... Done
- Building dependency tree
+ Reading package lists... Done
+ Building dependency tree
Reading state information... Done
- Building data structures... Done
+ Building data structures... Done
Calculating the changes
Calculating the changes
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
+ 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.
-
+ If none of this applies, then please report this bug using the
+ command 'ubuntu-bug ubuntu-release-upgrader-core' in a terminal.
Restoring original system state
Aborting
- Reading package lists... Done
- Building dependency tree
+ Reading package lists... Done
+ Building dependency tree
Reading state information... Done
Building data structures... Done
ProblemType: Bug
DistroRelease: Ubuntu 14.10
Package: ubuntu-release-upgrader-core 1:14.10.10
ProcVersionSignature: Ubuntu 3.16.0-34.47-generic 3.16.7-ckt8
Uname: Linux 3.16.0-34-generic x86_64
ApportVersion: 2.14.7-0ubuntu8.4
Architecture: amd64
CrashDB: ubuntu
CurrentDesktop: Unity
Date: Fri Apr 24 16:18:44 2015
InstallationDate: Installed on 2014-08-01 (265 days ago)
InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64
(20140722.2)
PackageArchitecture: all
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: Upgraded to utopic on 2015-04-24 (0 days ago)
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https://bugs.launchpad.net/bugs/1448163
Title:
Cannot upgrade from Ubuntu 14.10 to 15.04
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