distro upgrade bug

[Rodrigo Ap. F. Tomazini]

I can't upgrade from 15.04 to 15.10. The upgrade stops at calculating changes.

ProblemType: Bug
DistroRelease: Ubuntu 15.04
Package: ubuntu-release-upgrader-core 1:15.04.14.3
ProcVersionSignature: Ubuntu 3.16.0-45.60~14.04.1-generic 3.16.7-ckt14
Uname: Linux 3.16.0-45-generic x86_64
NonfreeKernelModules: wl
ApportVersion: 2.17.2-0ubuntu1.7
Architecture: amd64
CrashDB: ubuntu
CurrentDesktop: Unity
Date: Wed Nov 11 14:21:54 2015
InstallationDate: Installed on 2015-07-27 (106 days ago)
InstallationMedia: Ubuntu 14.04.2 LTS "Trusty Tahr" - Release amd64 (20150218.1)
PackageArchitecture: all
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: Upgraded to vivid on 2015-11-11 (0 days ago)
VarLogDistupgradeTermlog:

[berend (berenddeboer)]

I just had a problem that looked similar to yours, i.e. seeing: KeyError: "The cache has no package named 'linux-generic-lts-utopic'

I had upgraded from 14.04 to 15.04, and then wanted to go to 15.10. It seems that certain xserver/nvidia packages had been kept at trusty. I removed them, and then it prompted to install the vivid versions (although they were older). Unfortunately that led to a situation where I couldn't boot X as the kernel headers were not installed.

Anyway, everything now working, perhaps, at 15.04. But upgrade still fails. Stuck at calculating changes. My apt.log file is attached.

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[berend (berenddeboer)]

Actually got this fixed. Went through the Obsolete list (mentioned in main.log) and made sure all the corresponding *.list files where there. Then did an upgrade, that upgraded firefox-trunk. I removed the postgresql 9.3 packages I had. I reinstalled the spotify-client. And then it went ahead.

[berend (berenddeboer)]

For reference have included the main.log of the attempt that failed.

[berend (berenddeboer)]

And this is the Obsolete/Foreign from the currently running update process's main.log:

2015-11-12 14:09:29,119 DEBUG Foreign: bitcoinxt firefox-trunk google-chrome-stable jitsi libjs-jquery lxc-docker lxc-docker-1.9.0 opera-stable spotify-client system76-driver system76-wallpapers
2015-11-12 14:09:29,119 DEBUG Obsolete: indicator-notifications libgcrypt11 libisl10 linux-image-3.16.0-53-generic linux-image-extra-3.16.0-53-generic skype:i386 steam-launcher teamviewer:i386