[Bug 672235] Re: An unresolvable problem occurred while calculating the upgrade: E:Error, pkgProblemResolver::Resolve generated breaks, this may be caused by held packages

[Launchpad Bug Tracker]

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

** Changed in: update-manager (Ubuntu)
       Status: New => Confirmed

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https://bugs.launchpad.net/bugs/672235

Title:
  An unresolvable problem occurred while calculating the upgrade:
  E:Error, pkgProblemResolver::Resolve generated breaks, this may be
  caused by held packages

Status in “update-manager” package in Ubuntu:
  Confirmed

Bug description:
  Binary package hint: update-manager

  Description:    Ubuntu 10.04.1 LTS
  Release:        10.04

  I expected to be upgraded to maverick release but an error occured.
  Here is the stdout of the command I executed:

  amir at amir-desktop:~$ sudo do-release-upgrade --mode=desktop
  Checking for a new ubuntu release
  Done Upgrade tool signature
  Done Upgrade tool
  Done downloading            
  extracting 'maverick.tar.gz'
  authenticate 'maverick.tar.gz' against 'maverick.tar.gz.gpg' 
  tar: Removing leading `/' from member names

  Reading cache

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

  Updating repository information
  WARNING: Failed to read mirror file

  Third party sources disabled

  Some third party entries in your sources.list were disabled. You can 
  re-enable them after the upgrade with the 'software-properties' tool 
  or your package manager. 

  98% [Working] 
  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: 
  E:Error, pkgProblemResolver::Resolve generated breaks, this may be 
  caused by held packages. 

  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 against the 
  'update-manager' package and include the files in 
  /var/log/dist-upgrade/ in the bug report. 

  
  Restoring original system state

  Aborting
  Reading package lists... Done    
  Building dependency tree          
  Reading state information... Done
  Building data structures... Done

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