cannot upgrade to 16.10

[Burt Silverman]

I met all the conditions presumably but I still cannot upgrade and it won't tell me what package it finds offensive.

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: ubuntu-release-upgrader-core 1:16.04.19
ProcVersionSignature: Ubuntu 4.4.0-57.78-generic 4.4.35
Uname: Linux 4.4.0-57-generic x86_64
NonfreeKernelModules: nvidia_uvm nvidia_drm nvidia_modeset nvidia
ApportVersion: 2.20.1-0ubuntu2.4
Architecture: amd64
CrashDB: ubuntu
CurrentDesktop: Unity
Date: Sat Dec 31 10:33:13 2016
PackageArchitecture: all
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: Upgraded to xenial on 2016-12-31 (0 days ago)
VarLogDistupgradeTermlog:

mtime.conffile..etc.update-manager.release-upgrades: 2016-12-30T23:41:51.156432

[Burt Silverman (burtms)]

I found a way to get around the problem. I look at the Broken/Conflicts packages in /var/log/dist-upgrade/apt.log. One by one, I attempt to remove them from the system using synaptic. If a removal will cause a few other packages to get removed, and those do not include the Ubuntu Desktop, I go ahead and allow them to be removed. I remove a sizable fraction of the problem packages. Then I retry doing the dist-upgrade. Eventually, even though there are some Broken/Conflicts, the dist-upgrade process is willing to go through. Hopefully, important basic packages that I have removed get reinstalled during the upgrade. Seems to have worked AOK.