Public bug reported:
Running Ubuntu 14.04 (Trusty) under crouton on a Chromebook Pixel(2015)
Edited the file /etc/update-manager/release-upgrades
replaced Prompt=lts by Prompt=normal
sudo do-release-upgrade
This was the output:
Checking for a new Ubuntu release
Get:1 Upgrade tool signature [198 B]
Get:2 Upgrade tool [1214 kB]
Fetched 1214 kB in 0s (0 B/s)
authenticate 'vivid.tar.gz' against 'vivid.tar.gz.gpg'
extracting 'vivid.tar.gz'
...
...
...
Checking package manager
Reading package lists... Done
Building dependency tree
Reading state information... Done
Building data structures... Done
Calculating the changes
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.
Expected an upgrade to "Vivid", changes were rolled back. Only packages not
installed from repos are Google Chrome and Dropbox.
ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: ubuntu-release-upgrader-core 1:0.220.8
Uname: Linux 3.14.0 x86_64
ApportVersion: 2.14.1-0ubuntu3.19
Architecture: amd64
CrashDB: ubuntu
Date: Sun Jan 24 19:15:03 2016
PackageArchitecture: all
ProcEnviron:
TERM=xterm
PATH=(custom, no user)
XDG_RUNTIME_DIR=<set>
SHELL=/bin/bash
SourcePackage: ubuntu-release-upgrader
Symptom: ubuntu-release-upgrader
UpgradeStatus: Upgraded to trusty on 2016-01-25 (0 days ago)
mtime.conffile..etc.update.manager.release.upgrades: 2016-01-24T19:13:30.431739
** Affects: ubuntu-release-upgrader (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug dist-upgrade trusty
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https://bugs.launchpad.net/bugs/1537576
Title:
distro upgrade under crouton chroot session
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