[Bug 884668] Re: sudo apt-get update fails to update extras repository because of unavailable public key

[Alessandro Menti]

Thanks for reporting.

The error occurs because the GPG key used to sign the list of software
available in the repository has not been imported into the APT keyring.
Did you add the extras.ubuntu.com repository manually to
/etc/apt/sources.list or did you use another mean to add the "extras"
repository?

(Meanwhile, you can fix the error by opening a terminal and typing:
gpg --keyserver keyserver.ubuntu.com --recv-keys 16126D3A3E5C1192
gpg --armor --export 16126D3A3E5C1192 | apt-key add -)

** Changed in: apt (Ubuntu)
       Status: New => Incomplete

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https://bugs.launchpad.net/bugs/884668

Title:
  sudo apt-get update fails to update extras repository because of
  unavailable public key

Status in “apt” package in Ubuntu:
  Incomplete

Bug description:
  sudo apt-get update results into:

  
  W: GPG error: http://extras.ubuntu.com oneiric Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 16126D3A3E5C1192

  ProblemType: Bug
  DistroRelease: Ubuntu 11.10
  Package: apt 0.8.16~exp5ubuntu13
  ProcVersionSignature: Ubuntu 3.0.0-12.20-server 3.0.4
  Uname: Linux 3.0.0-12-server x86_64
  ApportVersion: 1.23-0ubuntu4
  Architecture: amd64
  Date: Tue Nov  1 11:48:11 2011
  InstallationMedia: Ubuntu-Server 11.10 "Oneiric Ocelot" - Release amd64 (20111011)
  SourcePackage: apt
  UpgradeStatus: No upgrade log present (probably fresh install)

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