[Bug 1621185] Re: Release distribution upgrade failure on Wily

[Brian Murray]

*** This bug is a duplicate of bug 1069133 ***
    https://bugs.launchpad.net/bugs/1069133

It's not enough to just move the sources.list file out of the way, you'd
need to revert to the Xorg packages provided by the official Ubuntu
archive instead of the PPA you are using.  There is a tool called ppa-
purge which will do just that.

** This bug has been marked a duplicate of bug 1069133
   Get upgrade error 12.04 - 12.10 "Could not determine upgrade" - xorg from ppa

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https://bugs.launchpad.net/bugs/1621185

Title:
  Release distribution upgrade failure on Wily

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

Bug description:
  lsb_release -a
  No LSB modules are available.
  Distributor ID:	Ubuntu
  Description:	Ubuntu 15.10
  Release:	15.10
  Codename:	wily

  do-release upgrade fails even with apt/sources.list.d moved out of the
  way to disable add-on packages

  ```
  Fetched 2,053 kB in 6s (1,893 B/s)                                                                

  Checking package manager
  Reading package lists... Done    
  Building dependency tree          
  Reading state information... 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. 

  
  Restoring original system state

  Aborting
  Reading package lists... Done    
  Building dependency tree          
  Reading state information... Done
  ```

  /var/log/unattended-upgrades/unattended-upgrades.log

  ```
  2016-09-07 12:42:53,142 INFO Initial blacklisted packages: 
  2016-09-07 12:42:53,143 INFO Initial whitelisted packages: 
  2016-09-07 12:42:53,143 INFO Starting unattended upgrades script
  2016-09-07 12:42:53,143 INFO Allowed origins are: ['o=Ubuntu,a=wily-security']
  2016-09-07 12:42:53,144 ERROR Lock could not be acquired (another package manager running?)
  ```

  ^Only thing running for updates was this same update and don't see
  another log. Ended up forcing the update manually by editing
  sources.list from Wily to Xenial, also /var/log/apport.log is empty.

  ProblemType: Bug
  DistroRelease: Ubuntu 15.10
  Package: ubuntu-release-upgrader-core 1:15.10.14.4
  ProcVersionSignature: Ubuntu 4.2.0-42.49-generic 4.2.8-ckt12
  Uname: Linux 4.2.0-42-generic x86_64
  ApportVersion: 2.19.1-0ubuntu5
  Architecture: amd64
  CrashDB: ubuntu
  Date: Wed Sep  7 12:32:06 2016
  InstallationDate: Installed on 2015-11-20 (291 days ago)
  InstallationMedia: Kubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021)
  PackageArchitecture: all
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to wily on 2016-09-07 (0 days ago)

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