[Bug 1767382] Re: upgrading from 16 to 18

Fri Apr 27 16:45:46 UTC 2018

** Tags added: xenial2bionic

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https://bugs.launchpad.net/bugs/1767382

Title:
  upgrading from 16 to 18

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

Bug description:
  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.

  ishwor at ishwor-Latitude-3440:~$ sudo apt update
  sudo: unable to resolve host ishwor-Latitude-3440
  [sudo] password for ishwor: 
  Hit:1 http://np.archive.ubuntu.com/ubuntu xenial InRelease
  Hit:2 http://ubuntu.ntc.net.np/ubuntu xenial InRelease                      
  AppStream cache update completed, but some metadata was ignored due to errors.
  Reading package lists... Done
  Building dependency tree       
  Reading state information... Done
  2 packages can be upgraded. Run 'apt list --upgradable' to see them.
  ishwor at ishwor-Latitude-3440:~$ sudo do-release-upgrade -d
  sudo: unable to resolve host ishwor-Latitude-3440
  Checking for a new Ubuntu release
  Get:1 Upgrade tool signature [819 B]                                           
  Get:2 Upgrade tool [1,257 kB]                                                  
  Fetched 1,258 kB in 0s (0 B/s)                                                 
  authenticate 'bionic.tar.gz' against 'bionic.tar.gz.gpg' 
  extracting 'bionic.tar.gz'

  Reading cache

  Checking package manager
  Reading package lists... Done
  Building dependency tree        
  Reading state information... Done
  Hit http://ubuntu.ntc.net.np/ubuntu xenial InRelease                           
  Hit http://np.archive.ubuntu.com/ubuntu xenial InRelease                       
  Fetched 0 B in 0s (0 B/s)                                                      
  Reading package lists... Done    
  Building dependency tree          
  Reading state information... Done

  Updating repository information
  Get:1 http://ubuntu.ntc.net.np/ubuntu bionic InRelease [242 kB]                
  Get:2 http://np.archive.ubuntu.com/ubuntu bionic InRelease [242 kB]            
  Get:3 http://ubuntu.ntc.net.np/ubuntu bionic/main amd64 Packages [1,019 kB]    
  Get:4 http://np.archive.ubuntu.com/ubuntu bionic/main amd64 Packages [1,019 kB]
  Get:5 http://ubuntu.ntc.net.np/ubuntu bionic/main i386 Packages [1,007 kB]     
  Get:6 http://np.archive.ubuntu.com/ubuntu bionic/main i386 Packages [1,007 kB] 
  Get:7 http://ubuntu.ntc.net.np/ubuntu bionic/main Translation-en [516 kB]      
  Get:8 http://ubuntu.ntc.net.np/ubuntu bionic/main amd64 DEP-11 Metadata [477 kB]
  Get:9 http://np.archive.ubuntu.com/ubuntu bionic/main Translation-en [516 kB]  
  Get:10 http://ubuntu.ntc.net.np/ubuntu bionic/main DEP-11 64x64 Icons [245 kB] 
  Get:11 http://np.archive.ubuntu.com/ubuntu bionic/main amd64 DEP-11 Metadata [477 kB]
  Get:12 http://np.archive.ubuntu.com/ubuntu bionic/main DEP-11 64x64 Icons [245 kB]
  Fetched 7,012 kB in 0s (0 B/s)                                                 

  (appstreamcli:7223): GLib-CRITICAL **: g_strchug: assertion 'string !=
  NULL' failed

  (appstreamcli:7223): GLib-CRITICAL **: g_strchomp: assertion 'string
  != NULL' failed

  (appstreamcli:7223): GLib-CRITICAL **: g_strchug: assertion 'string !=
  NULL' failed

  (appstreamcli:7223): GLib-CRITICAL **: g_strchomp: assertion 'string != NULL' failed
  AppStream cache update completed, but some metadata was ignored due to errors.

  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

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: ubuntu-release-upgrader-core 1:16.04.12
  ProcVersionSignature: Ubuntu 4.4.0-21.37-generic 4.4.6
  Uname: Linux 4.4.0-21-generic x86_64
  ApportVersion: 2.20.1-0ubuntu2
  Architecture: amd64
  CrashDB: ubuntu
  CurrentDesktop: Unity
  Date: Fri Apr 27 19:43:55 2018
  InstallationDate: Installed on 2016-05-11 (716 days ago)
  InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2)
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to xenial on 2018-04-27 (0 days ago)
  VarLogDistupgradeTermlog:

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