Cannot upgrade ubuntu 12.04 precise to 14.04
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
update-manager (Ubuntu) |
Invalid
|
Undecided
|
Unassigned |
Bug Description
Trying to upgrade ubuntu 12.04 to the next LTS release I got the following error:
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
ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: update-manager 1:0.156.14.12
ProcVersionSign
Uname: Linux 3.2.0-60-
ApportVersion: 2.0.1-0ubuntu17.7
Architecture: i386
Date: Fri Oct 24 17:00:58 2014
GsettingsChanges:
com.ubuntu.
com.ubuntu.
com.ubuntu.
com.ubuntu.
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Beta i386 (20120301)
MarkForUpload: True
PackageArchitec
SourcePackage: update-manager
Symptom: ubuntu-
UpgradeStatus: Upgraded to precise on 2014-10-24 (0 days ago)
VarLogDistupgra
Problem fixed.
I ran the foolowing command to determine obsolete packages. After removing them, the upgrade succeeded.
$ cat /var/log/ dist-upgrade/ main.log | grep Obsolete