Upgrading Ubuntu to version 16.04 fails
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
ubuntu-release-upgrader (Ubuntu) |
Invalid
|
Undecided
|
Unassigned |
Bug Description
When I log on I'm asked to upgrade Ubuntu to version 16.04 which I accept. But it always fails with this text in a box:
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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-
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$ lsb_release -rd
Description: Ubuntu 14.04.4 LTS
Release: 14.04
ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: ubuntu-
ProcVersionSign
Uname: Linux 3.13.0-92-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.21
Architecture: amd64
CrashDB: ubuntu
Date: Fri Jul 29 16:33:06 2016
InstallationDate: Installed on 2014-08-04 (725 days ago)
InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2)
PackageArchitec
SourcePackage: ubuntu-
UpgradeStatus: Upgraded to trusty on 2016-07-29 (0 days ago)
VarLogDistupgra
Reviewing the files from your upgrade attempt you seem to have enabled a PPA that provides Xorg packages. This will prevent the upgrade as that PPA contains different versions of packages essential to Ubuntu. The page, https:/ /launchpad. net/~xorg- edgers/ +archive/ ppa, contains details on to how to revert to the official Xorg packages for the xorg-edgers PPA. Instructions for reverting to official Xorg packages should be similar for the PPA that you have enabled.