[Bug 1807043] Re: when rewriting sources.list ubuntu-release-upgrader doesn't check to see if new release is available

[Francis Ginther]

** Tags added: id-5b5b2ceb30bee3278544fe94

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https://bugs.launchpad.net/bugs/1807043

Title:
  when rewriting sources.list ubuntu-release-upgrader doesn't check to
  see if new release is available

Status in ubuntu-release-upgrader package in Ubuntu:
  In Progress

Bug description:
  When rewriting sources.list entries the release-upgrader doesn't check
  to see if the distribution to which the system is being upgraded is
  supported by the archive / PPA. This results in the following error
  message:

  A problem occurred during the update. This is usually some sort of 
  network problem, please check your network connection and retry. 

  E:The repository 'http://ppa.launchpad.net/team-xbmc/ppa/ubuntu 
  cosmic Release' does not have a Release file. 

  If the release-upgrader were to actually check if the release were
  supported then that specific sources entry could be disabled and the
  upgrade may be able to proceed.

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