do-release-upgrade failed casued by dependencies issue

[Alan Tsui]

Dear Support,

  I could not upgrade from Ubuntu 14.04 to 16.04 by using 'do-release-upgrade' command as too many dependencies errors.
====================================================================
$ lsb_release -rd
Description: Ubuntu 14.04.5 LTS
Release: 14.04
====================================================================

Thanks for your kind help and attention.

Regards,
Alan

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: ubuntu-release-upgrader-core 1:0.220.8
ProcVersionSignature: Ubuntu 3.13.0-98.145-generic 3.13.11-ckt39
Uname: Linux 3.13.0-98-generic x86_64
NonfreeKernelModules: talpa_vfshook talpa_pedconnector talpa_pedevice talpa_vcdevice talpa_core talpa_linux talpa_syscallhook
ApportVersion: 2.14.1-0ubuntu3.21
Architecture: amd64
CrashDB: ubuntu
CurrentDesktop: Unity
Date: Mon Oct 24 15:29:44 2016
InstallationDate: Installed on 2015-08-13 (438 days ago)
InstallationMedia: Ubuntu-Server 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.3)
PackageArchitecture: all
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: Upgraded to trusty on 2016-10-24 (0 days ago)
VarLogDistupgradeAptlog:
 Log time: 2016-10-24 15:24:59.155805
 Log time: 2016-10-24 15:25:19.851167