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Thread: problem with upgrade from 10.04 to 10.10

  1. #1
    Join Date
    Sep 2008
    Beans
    8

    problem with upgrade from 10.04 to 10.10

    hi everyone am try to upgrade my ubuntu 10.4 LTS to ubuntu 10.10 and when i follow the procedure in
    https://help.ubuntu.com/community/MaverickUpgrades
    this error appear in the update manger :

    W: GPG error: http://ppa.launchpad.net karmic Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 638ABCA0FA3A1271
    W: GPG error: http://ppa.launchpad.net intrepid Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 638ABCA0FA3A1271


    so if anybody can help me to know what is the problem exactly and tell me how i can upgrade to 10.10

    thxx soo much

  2. #2
    Join Date
    Oct 2009
    Location
    Reykjavík, Ísland
    Beans
    11,369
    Distro
    Lubuntu 15.10 Wily Werewolf

    Re: problem with upgrade from 10.04 to 10.10

    It seems like you have some cruft from 9.10 on your system. You could try to disable all PPA's or go for a clean install, if that does not help:

    http://www.ubuntuforums.org/showthread.php?t=1580857
    About problems due to upgrading
    Bringing old hardware back to life.
    Please visit Quick Links -> Unanswered Posts

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