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[SOLVED] After adding medibuntu repositories I get a weird error

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    #1

    [SOLVED] After adding medibuntu repositories I get a weird error

    When I
    Code:
    sudo apt-get update
    I get the following error (in Dutch):
    W: GPG-fout: http://ppa.launchpad.net jaunty Release: De volgende ondertekeningen konden niet geverifieerd worden omdat de publieke sleutel niet beschikbaar is: NO_PUBKEY 2836CB0A8AC93F7A
    W: U kunt misschien 'apt-get update' uitvoeren om deze problemen te verhelpen

    My translation in English:
    W: GPG-error: http://ppa.launchpad.net jaunty Release: Following signatures couldn't be verified because the public key is not available: NO_PUBKEY 2836CB0A8AC93F7A
    W: You might try to execute 'apt-get update' to solve these problems

    Question.... Should I be worried? Is there a problem? Can I solve it?
    Tags: None
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    #2
    Re: After adding medibuntu repositories I get a weird error

    Originally posted by hansdevr
    When I
    Code:
    sudo apt-get update
    I get the following error (in Dutch):
    W: GPG-fout: http://ppa.launchpad.net jaunty Release: De volgende ondertekeningen konden niet geverifieerd worden omdat de publieke sleutel niet beschikbaar is: NO_PUBKEY 2836CB0A8AC93F7A
    W: U kunt misschien 'apt-get update' uitvoeren om deze problemen te verhelpen

    My translation in English:
    W: GPG-error: http://ppa.launchpad.net jaunty Release: Following signatures couldn't be verified because the public key is not available: NO_PUBKEY 2836CB0A8AC93F7A
    W: You might try to execute 'apt-get update' to solve these problems

    Question.... Should I be worried? Is there a problem? Can I solve it?
    You haven't added the gpg signing key for medibuntu packages. If you already have the repo enabled, you can do that easily by installing the 'medibuntu-keyring' package.

    EDIT: oops, the error isn't from medibuntu repository (you have also added a PPA repository, you need to add the key for that PPA (you can get it from url of the PPA in question)
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      #3
      Re: After adding medibuntu repositories I get a weird error

      Originally posted by kubicle
      EDIT: oops, the error isn't from medibuntu repository (you have also added a PPA repository, you need to add the key for that PPA (you can get it from url of the PPA in question)
      Been there, but couldn't find such a package/key...
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        #4
        Re: After adding medibuntu repositories I get a weird error

        Look at this page: https://help.ubuntu.com/community/Medibuntu

        Page down to: Then, add the GPG Key...

        So, connect to the internet, open a terminal and input the command:
        sudo apt-get update && sudo apt-get install medibuntu-keyring && sudo apt-get update
        "A problem well stated is a problem half solved." --Charles F. Kettering
        "Sometimes the questions are complicated and the answers are simple."--Dr. Seuss
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          #5
          Re: After adding medibuntu repositories I get a weird error

          Originally posted by arochester
          Look at this page: https://help.ubuntu.com/community/Medibuntu

          Page down to: Then, add the GPG Key...

          So, connect to the internet, open a terminal and input the command:
          sudo apt-get update && sudo apt-get install medibuntu-keyring && sudo apt-get update
          Despite the thread title, the gpg error is not from medibuntu, but from a ppa.

          Originally posted by hansdevr
          Originally posted by kubicle
          EDIT: oops, the error isn't from medibuntu repository (you have also added a PPA repository, you need to add the key for that PPA (you can get it from url of the PPA in question)
          Been there, but couldn't find such a package/key...
          Example from: https://launchpad.net/~samrog131/+archive/ppa
          Code:
          This repository is signed with 1024R/2B7E03A7 OpenPGP key. Follow these instructions for installing packages from this PPA.
          Instructions on how to add:
          https://help.launchpad.net/Packaging...to your system
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            #6
            Re: After adding medibuntu repositories I get a weird error

            Oops!

            I have had success using the Perl script to add keys to PPA repositories, as at http://ubuntuforums.org/showthread.php?t=1056099
            "A problem well stated is a problem half solved." --Charles F. Kettering
            "Sometimes the questions are complicated and the answers are simple."--Dr. Seuss
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              #7
              Re: After adding medibuntu repositories I get a weird error

              Let's suppose I might think it all to be too much of a hassle and I wanted to remove the PPA repository...
              How should I be doing that?
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                #8
                Re: After adding medibuntu repositories I get a weird error

                Let's suppose I might think it all to be too much of a hassle and I wanted to remove the PPA repository...
                How should I be doing that?

                Add/Edit/Remove with a gui

                K > Applications > System > Software Management (KPackageKit)

                KPackageKit > Settings > Edit Software Sources

                Software Sources > Third-Party Software (PPA repositories should be here)

                Click a line and click Remove...


                Fast lane: Press ALT+F2 and type "kdesudo software-properties-kde"
                (or copy&paste)


                Add/Edit/Remove without a gui

                The sources list is a text file so you could edit it with a text editor. Backup it before you edit it !!

                Press ALT+F2 and type "kdesudo kate /etc/apt/sources.list"

                If a line starts with a # then the source is disabled (it is a comment line).


                The sources.list.d

                man sources.list
                The /etc/apt/sources.list.d directory provides a way to add sources.list entries in separate files. The format is the same as for the regular sources.list file. File names need to end with .list and may only contain letters (a-z and A-Z), digits (0-9), underscore (_), hyphen (-) and period (.) characters. Otherwise they will be silently ignored.

                Signature warning

                W: GPG-error: http://ppa.launchpad.net jaunty Release: Following signatures couldn't be verified because the public key is not available: NO_PUBKEY 2836CB0A8AC93F7A
                That error is from the > Kubuntu Updates. It is offering you the KDE 4.2.3 (+bugfixes, updates). Earlier > Topic: [SOLVED] 4.2.3 released, how long does it usually take to get it out in Kubuntu.

                To add the keys:
                Code:
                sudo apt-key adv --recv-keys --keyserver keyserver.ubuntu.com 8AC93F7A
                It should tell you:
                Executing: gpg --ignore-time-conflict --no-options --no-default-keyring --secret-keyring /etc/apt/secring.gpg --trustdb-name /etc/apt/trustdb.gpg --keyring /etc/apt/trusted.gpg --recv-keys --keyserver keyserver.ubuntu.com 8AC93F7A
                gpg: requesting key 8AC93F7A from hkp server keyserver.ubuntu.com
                gpg: key 8AC93F7A: public key "Launchpad Kubuntu Updates" imported
                gpg: Total number processed: 1
                gpg: imported: 1 (RSA: 1)

                Note !
                You could use the PPA repositories (or any repository) without the keys. Without the keys you will get warnings but they are only warnings not showstoppers.

                The keys are there for (> PPA):
                the packages you're downloading haven't been altered since Launchpad built them
                you are downloading from the PPA you wanted.
                .
                Before you edit, BACKUP !

                Why there are dead links ?
                1. Thread: Please explain how to access old kubuntu forum posts
                2. Thread: Lost Information
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                  #9
                  Re: After adding medibuntu repositories I get a weird error

                  WOW!! That was VERY helpful!! Thank you very much!!
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                    #10
                    Re: [SOLVED] After adding medibuntu repositories I get a weird error

                    Although this was already marked as solved I found some extra helpful information at http://ubuntuforums.org/showthread.php?t=1147414

                    A very helpful user Partyboi2 provided the commands which were missing from the original Medibuntu instructions for adding the repository.

                    This solved the problem for me so I have updated the Medibuntu instructions at https://help.ubuntu.com/community/Me...e%20Repository to include these commands so hopefully nobody will have this problem again.
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