[Bug 1241818] Re: do-release-upgrade fails

[Launchpad Bug Tracker]

[Expired for ubuntu-release-upgrader (Ubuntu) because there has been no
activity for 60 days.]

** Changed in: ubuntu-release-upgrader (Ubuntu)
       Status: Incomplete => Expired

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https://bugs.launchpad.net/bugs/1241818

Title:
  do-release-upgrade fails

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

Bug description:
  using the do-release-upgrade command fails, saying there is a problem
  with the network"

  gpg: can't open `/etc/apt/trusted.gpg'
  gpg: keydb_search failed: file open error
  gpg: Can't check signature: public key not found

  Authentication failed
  Authenticating the upgrade failed. There may be a problem with the network or with the server.

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