Trying to upgrade from 14.04 LTS to 16.04 LTS

[David Coster]

I'm following the instructions given during the failing upgrade process:

...
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.

Current release:
Description: Ubuntu 14.04.5 LTS
Release: 14.04

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: ubuntu-release-upgrader-core 1:0.220.9
ProcVersionSignature: Ubuntu 3.13.0-105.152-generic 3.13.11-ckt39
Uname: Linux 3.13.0-105-generic i686
NonfreeKernelModules: openafs
ApportVersion: 2.14.1-0ubuntu3.23
Architecture: i386
CrashDB: ubuntu
CurrentDesktop: Unity
Date: Sun Dec 18 19:27:59 2016
InstallationDate: Installed on 2010-03-20 (2465 days ago)
InstallationMedia: Ubuntu 9.10 "Karmic Koala" - Release i386 (20091028.5)
PackageArchitecture: all
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: Upgraded to trusty on 2016-12-18 (0 days ago)
VarLogDistupgradeAptlog: Log time: 2016-12-18 19:28:05.458128

[Brian Murray (brian-murray)]

Your log files seem incomplete, could you try the upgrade again and add /var/log/dist-upgrade/main.log and /var/log/dist-upgrade/apt.log? Thanks in advance.

[Launchpad Janitor (janitor)]

[Expired for ubuntu-release-upgrader (Ubuntu) because there has been no activity for 60 days.]

[Bruno KHELIFI (bkhelifi)]

Hello,

I have many 'obsolete' packages that might cause troubles (even if there are not obsolete!).

[1:20am] /home/bruno> cat /var/log/dist-upgrade/main.log | grep Obsole
2017-10-06 01:15:25,486 DEBUG Obsolete: 4kvideodownloader adobereader-enu:i386 bcmwl-kernel-source equalx ffmpeg indicator-workspaces kodi kodi-bin launchpad-getkeys libavcodec-ffmpeg56 libavdevice-ffmpeg56 libavfilter-ffmpeg5 libavformat-ffmpeg56 libavresample-ffmpeg2 libavutil-ffmpeg54 libcec4 libcrossguid1 libgif5 libp8-platform2 libpostproc-ffmpeg53 libshairplay0 libshine3 libswresample-ffmpeg1 libswscale-ffmpeg3 libx265 my-weather-indicator mysql-workbench-community obs-studio opencpn opencpn-doc opencpn-gshhs-crude opencpn-gshhs-full opencpn-gshhs-high opencpn-gshhs-intermediate opencpn-gshhs-low opencpn-plugin-aisradar opencpn-plugin-celestial opencpn-plugin-climatology opencpn-plugin-climatology-data opencpn-plugin-iacfleet opencpn-plugin-launcher opencpn-plugin-logbookkonni opencpn-plugin-objsearch opencpn-plugin-ocpndebugger opencpn-plugin-polar opencpn-plugin-route opencpn-plugin-rtlsdr opencpn-plugin-sar opencpn-plugin-squiddio opencpn-plugin-statusbar opencpn-plugin-vdr opencpn-plugin-watchdog opencpn-plugin-weatherfax opencpn-plugin-weatherrouting opencpn-tcdata qt-faststart skype skype-bin:i386 spotify-client va-driver-all y-ppa-manager yad

Can this create troubles in my upgrade?

Thanks in advance,
Bruno K.