crashes while upgrading Ubuntu version from 14.10 to 15.04
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
ubuntu-release-upgrader (Ubuntu) |
New
|
Undecided
|
Unassigned |
Bug Description
It says (appears on the screen) while setting new software channels when upgrading:
"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-
ProblemType: Bug
DistroRelease: Ubuntu 14.10
Package: ubuntu-
ProcVersionSign
Uname: Linux 3.16.0-43-generic x86_64
NonfreeKernelMo
ApportVersion: 2.14.7-0ubuntu8.5
Architecture: amd64
CrashDB: ubuntu
CurrentDesktop: Unity
Date: Wed Jul 8 12:32:56 2015
InstallationDate: Installed on 2011-02-08 (1610 days ago)
InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release amd64 (20101007)
PackageArchitec
SourcePackage: ubuntu-
UpgradeStatus: Upgraded to utopic on 2015-07-08 (0 days ago)
VarLogDistupgra