Upgrade Ubuntu 14.04 (Trusty Tahr) to Ubuntu 14.10 (Utopic Unicorn)

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5 Responses

  1. xRAW says:

    [email protected]:~# lsb_release -r
    Release: 14.04
    [email protected]:~# sudo do-release-upgrade
    Checking for a new Ubuntu release
    No new release found
    [email protected]:~#

    What i can do now?!

  2. Steve O'Gorman says:

    Hi there

    I’ve gone through the stages you’ve described here, but I keep getting an error message: ‘

    Checking for a new Ubuntu release
    Get:1 Upgrade tool signature [198 B]
    Get:2 Upgrade tool [1,147 kB]
    Fetched 1,148 kB in 6s (77.0 kB/s)
    authenticate ‘utopic.tar.gz’ against ‘utopic.tar.gz.gpg’
    gpg exited 2
    Debug information:

    gpg: Signature made Tue 21 Oct 2014 14:09:03 BST using DSA key ID 437D05B5
    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.

    I am using a pitifully slow public wifi in my local library – could that have something to do with it?

  3. cJ says:

    You have a typo in your how-to:

    sudo do-release upgrade

    Should be:

    sudo do-release-upgrade

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