[Bug 1005994] Re: Failed to Fetch error on Precise 12.04 upgrade

[waldo mackay]

I should state that I had previously upgraded to 12.04 from 10.04 and it seems to have been working for a couple of weeks;
however it failed on the last update.

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https://bugs.launchpad.net/bugs/1005994

Title:
  Failed to Fetch error on Precise 12.04 upgrade

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

Bug description:
  lsb_release -rd
  Description:    Ubuntu 11.10
  Release:        11.10

  apt-cache policy pkgname
  Evidently, the exact pkgname for the upgrade is unknowable. It is just "the upgrade" to all bits of exposed UI. 
  (This is itself a bug!)

  Error message is 
  A problem occurred during the update. This is ususally some sort of network problem. Please check the network connection and retry.

  Tried twice.

  Will try again later.

  W:Failed to fetch http://us.archive.ubuntu.com/ubuntu/dists/karmic-backports/main/source/Sources  404  Not Found [IP: 91.189.92.152 80]
  , W:Failed to fetch http://us.archive.ubuntu.com/ubuntu/dists/karmic-backports/restricted/source/Sources  404  Not Found [IP: 91.189.92.152 80]
  , W:Failed to fetch http://us.archive.ubuntu.com/ubuntu/dists/karmic-backports/universe/source/Sources  404  Not Found [IP: 91.189.92.152 80]
  , W:Failed to fetch http://us.archive.ubuntu.com/ubuntu/dists/karmic-backports/multiverse/source/Sources  404  Not Found [IP: 91.189.92.152 80]
  , E:Some index files failed to download. They have been ignored, or old ones used instead.

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