Could not upgrade from 14.04 LTS to 15.10
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
ubuntu-release-upgrader (Ubuntu) |
Invalid
|
Undecided
|
Unassigned |
Bug Description
Steps to repeat:
1. Launch Software Updater
2. Software Updater reports software is up to date but offers 15.10
3. Click Upgrade and authenticate
4. Wily Werewolf Release Notes is displayed. Click Upgrade
Expect:
Upgrade to 15.10
Observe:
Process halts because "could not calculate the upgrade"
Info:
lsb_release -rd
Description: Ubuntu 14.04.4 LTS
Release: 14.04
ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: ubuntu-
ProcVersionSign
Uname: Linux 3.16.0-76-generic x86_64
NonfreeKernelMo
ApportVersion: 2.14.1-0ubuntu3.21
Architecture: amd64
CrashDB: ubuntu
CurrentDesktop: Unity
Date: Thu Jun 30 19:47:34 2016
InstallationDate: Installed on 2015-06-25 (371 days ago)
InstallationMedia: Ubuntu 14.04.2 LTS "Trusty Tahr" - Release amd64 (20150218.1)
PackageArchitec
SourcePackage: ubuntu-
UpgradeStatus: Upgraded to trusty on 2016-07-01 (0 days ago)
VarLogDistupgra
mtime.conffile.
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.