[Bug 1816300] Re: An unresolvable problem occurred while calculating the upgrade.

[Launchpad Bug Tracker]

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

** Changed in: ubuntu-release-upgrader (Ubuntu)
       Status: New => Confirmed

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https://bugs.launchpad.net/bugs/1816300

Title:
  An unresolvable problem occurred while calculating the upgrade.

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

Bug description:
  Checking for a new Ubuntu release
  Get:1 Upgrade tool signature [819 B]                                           
  Get:2 Upgrade tool [1,246 kB]                                                  
  Fetched 1,247 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://archive.canonical.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://archive.canonical.com/ubuntu bionic InRelease [10.2 kB]           
  Get:2 http://archive.ubuntu.com/ubuntu bionic InRelease [242 kB]               
  Get:3 http://archive.canonical.com/ubuntu bionic/partner amd64 Packages [2,304 B]
  Get:4 http://archive.canonical.com/ubuntu bionic/partner i386 Packages [2,300 B]
  Get:5 http://archive.canonical.com/ubuntu bionic/partner Translation-en [1,272 B]
  Get:6 http://archive.ubuntu.com/ubuntu bionic/main amd64 Packages [1,019 kB]   
  Get:7 http://archive.ubuntu.com/ubuntu bionic/main i386 Packages [1,007 kB]    
  Get:8 http://archive.ubuntu.com/ubuntu bionic/main Translation-en [516 kB]     
  Get:9 http://archive.ubuntu.com/ubuntu bionic/main amd64 DEP-11 Metadata [477 kB]
  Get:10 http://archive.ubuntu.com/ubuntu bionic/main DEP-11 64x64 Icons [245 kB]
  Fetched 3,522 kB in 0s (0 B/s)                                                 

  (appstreamcli:15830): GLib-CRITICAL **: g_strchug: assertion 'string
  != NULL' failed

  (appstreamcli:15830): GLib-CRITICAL **: g_strchomp: assertion 'string
  != NULL' failed

  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.

  If none of this applies, then please report this bug using the 
  command 'ubuntu-bug ubuntu-release-upgrader-core' in a terminal.If 
  you want to investigate this yourself the log files in 
  '/var/log/dist-upgrade' will contain details about the upgrade. 
  Specifically, look at 'main.log' and 'apt.log'. 

  
  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 1:16.04.26 [origin: unknown]
  ProcVersionSignature: Ubuntu 4.4.0-142.168-generic 4.4.167
  Uname: Linux 4.4.0-142-generic x86_64
  ApportVersion: 2.20.1-0ubuntu2.18
  Architecture: amd64
  CrashDB: ubuntu
  CurrentDesktop: Unity
  Date: Sun Feb 17 22:06:04 2019
  DistributionChannelDescriptor:
   # This is a distribution channel descriptor
   # For more information see http://wiki.ubuntu.com/DistributionChannelDescriptor
   canonical-oem-somerville-xenial-amd64-20160624-2
  InstallationDate: Installed on 2018-01-25 (388 days ago)
  InstallationMedia: Ubuntu 16.04 "Xenial" - Build amd64 LIVE Binary 20160624-10:47
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to xenial on 2019-02-17 (0 days ago)
  mtime.conffile..etc.update-manager.release-upgrades: 2019-02-17T19:43:46.418347

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