[Bug 1512819] Re: do-release-upgrade refused to upgrade 14.04 to vivid

[Alejandro Mery]

it was oracle-java8* from ppa:webupd8team/java ... even ppa-purge had
trouble handling them. do-release-upgrade should handle these situations
or at least tell what packages are causing the problem.

$ sudo ppa-purge -p java webupd8team
Updating packages lists
PPA to be removed: webupd8team java
Package revert list generated:
 oracle-java8-installer/trusty oracle-java8-set-default/trusty

Disabling webupd8team PPA from 
/etc/apt/sources.list.d/webupd8team-java-trusty.list
Updating packages lists
Reading package lists... Done
Building dependency tree       
Reading state information... Done
E: Release 'trusty' for 'oracle-java8-installer' was not found
E: Release 'trusty' for 'oracle-java8-set-default' was not found
Unable to find an archive "trusty" for the package "oracle-java8-installer"
Unable to find an archive "trusty" for the package "oracle-java8-set-default"
Unable to find an archive "trusty" for the package "oracle-java8-installer"
Unable to find an archive "trusty" for the package "oracle-java8-set-default"
No packages will be installed, upgraded, or removed.
0 packages upgraded, 0 newly installed, 0 to remove and 1 not upgraded.
Need to get 0 B of archives. After unpacking 0 B will be used.
                                         
PPA purged successfully using aptitude fallback
$ sudo ppa-purge -p java webupd8team
Updating packages lists
PPA to be removed: webupd8team java
Warning:  Could not find package list for PPA: webupd8team java

$ dpkg -l | grep oracle
ii  oracle-java8-installer                      8u66+8u65arm-1~webupd8~1                all          Oracle Java(TM) Development Kit (JDK) 8
ii  oracle-java8-set-default                    8u66+8u65arm-1~webupd8~1                all          Set Oracle JDK 8 as default Java

$ sudo apt-get remove --purge oracle-java8-installer oracle-java8-set-default
Reading package lists... Done
Building dependency tree       
Reading state information... Done
The following packages will be REMOVED:
  oracle-java8-installer* oracle-java8-set-default*
0 upgraded, 0 newly installed, 2 to remove and 1 not upgraded.
After this operation, 167 kB disk space will be freed.
Do you want to continue? [Y/n] 
(Reading database ... 239897 files and directories currently installed.)
Removing oracle-java8-set-default (8u66+8u65arm-1~webupd8~1) ...
Purging configuration files for oracle-java8-set-default (8u66+8u65arm-1~webupd8~1) ...
Removing oracle-java8-installer (8u66+8u65arm-1~webupd8~1) ...

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https://bugs.launchpad.net/bugs/1512819

Title:
  do-release-upgrade refused to upgrade 14.04 to vivid

Status in ubuntu-release-upgrader package in Ubuntu:
  New

Bug description:
  * Unofficial software packages not provided by Ubuntu

  how can I know what package or ppa is causing this?

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: ubuntu-release-upgrader-core 1:0.220.8
  ProcVersionSignature: Ubuntu 3.16.0-51.69~14.04.1-generic 3.16.7-ckt17
  Uname: Linux 3.16.0-51-generic x86_64
  NonfreeKernelModules: nvidia
  ApportVersion: 2.14.1-0ubuntu3.18
  Architecture: amd64
  CrashDB: ubuntu
  CurrentDesktop: XFCE
  Date: Tue Nov  3 17:54:39 2015
  InstallationDate: Installed on 2015-03-25 (223 days ago)
  InstallationMedia: Xubuntu 14.04.2 LTS "Trusty Tahr" - Release amd64 (20150218.1)
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to trusty on 2015-11-03 (0 days ago)
  mtime.conffile..etc.update.manager.release.upgrades: 2015-11-03T17:52:37.814205

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