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Thread: Cannot updgrade from 16.04 to 18.04 Error in update?

  1. #1
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    Cannot updgrade from 16.04 to 18.04 Error in update?

    At the end of each update the following phrases appear:

    Reading package lists... Done

    W: Problem unlinking the file lists.old - Clean (21: Is a directory)


    Upgrades work after that, but after an exhaustive process of installing 18.04 LTS online I am informed that the installation fails.

    I don't really want to install from the ISO that I now have on a thumb drive of 18.04 LTS, because I understand that I shall have to reformat the HDD and therefore reinstall all settings and files from Backup. I was able to upgrade from 16.04 LTS on my wife's machine without problems to 18.04 LTS.

    This error has been there for at least a year with no apparent effect on upgrades at all. Today I did a successful "full-upgrade"
    Can someone please explain it and correct it?

  2. #2
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    Kubuntu 18.04 Bionic Beaver

    Re: Cannot updgrade from 16.04 to 18.04 Error in update?

    I've not ever seen the issue that you're having, but this error

    Code:
    W: Problem unlinking the file lists.old - Clean (21: Is a directory)
    is saying that a file it's trying to clean up (lists.old) is unexpectedly a directory. Since it's an error that crops up as part of the upgrade process, I'd imagine that it's in /etc/apt. Deleting or renaming the lists.old directory should clear that error.

  3. #3
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    Re: Cannot updgrade from 16.04 to 18.04 Error in update?

    Yes
    Sounds like you modified your sources list. Please post the output of:
    Code:
    ls /etc/apt

  4. #4
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    Re: Cannot updgrade from 16.04 to 18.04 Error in update?

    Many thanks for the prompt replies. The statement appears at the end of the update not the upgrades which seem to work well without error.
    Code:
     rlcooper@rlcooper-HP-250-G3-Notebook-PC:~$ ls /etc/apt
    apt.conf.d     sources.list              sources.list.save  trusted.gpg~
    auth.conf.d    sources.list.d            trustdb.gpg        trusted.gpg.d
    preferences.d  sources.list.distUpgrade  trusted.gpg
    rlcooper@rlcooper-HP-250-G3-Notebook-PC:~$
    I hope that the listing helps.
    What does W: signify?
    Regards
    richardlc
    Last edited by deadflowr; September 8th, 2019 at 06:20 AM. Reason: fixed broken code tag brackets

  5. #5
    Join Date
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    Kubuntu 18.04 Bionic Beaver

    Re: Cannot updgrade from 16.04 to 18.04 Error in update?

    Quote Originally Posted by richardlc View Post
    What does W: signify?
    Warning.

    As opposed to E: Error or I: Information.

  6. #6
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    Re: Cannot updgrade from 16.04 to 18.04 Error in update?

    Well, we both expected it to be there but its not. Like CatKiller said, its a warning and will not affect updates. Could go away with a reboot.

    You can search your file system for it or just not concern yourself with it. It upgrades, so its good.

  7. #7
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    Re: Cannot updgrade from 16.04 to 18.04 Error in update?

    Thank you very much. And for fixing the broken code brackets: I think I have now worked out from all the excellent Wiki contents how to put them in properly!

    Meanwhile, although it will do upgrades all the time, it won't do a "release-upgrade" without the error or warning at the end of the process, so I shall search the system as you suggested for the errant directory. I can't remember how to do that at present, but will revise my terminal techniques to do so! I shall return with the results in due course!

  8. #8
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    Re: Cannot updgrade from 16.04 to 18.04 Error in update?

    Please post
    Code:
    cat /etc/apt/sources.list && ls /etc/apt/sources.list.d/*.list
    Also clean the package system, see if it helps.
    Code:
    sudo apt autoremove && sudo apt clean
    Verify the cache is clean, should show all zero's.
    Code:
    du -ch /var/cache/apt/archives/
    If packages still remain in cache
    Code:
    sudo rm -r /var/cache/apt/archives/*
    and reboot

  9. #9
    Join Date
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    Re: Cannot updgrade from 16.04 to 18.04 Error in update?

    Many thanks again. Here is the response to your command on the terminal. I shall be interested to know what it means. I have also tried a search for lists.old in directories which I shall show you after your response to this suggestion.


    Code:
    rlcooper@rlcooper-HP-250-G3-Notebook-PC:~$ cat /etc/apt/sources.list && ls /etc/apt/sources.list.d/*.list
    # deb cdrom:[Ubuntu 14.04.1 LTS _Trusty Tahr_ - Release amd64 (20140722.2)]/ trusty main restricted
    
    # See http://help.ubuntu.com/community/UpgradeNotes for how to upgrade to
    # newer versions of the distribution.
    deb http://archive.ubuntu.com/ubuntu xenial main restricted
    deb-src http://archive.ubuntu.com/ubuntu xenial main restricted
    
    ## Major bug fix updates produced after the final release of the
    ## distribution.
    deb http://archive.ubuntu.com/ubuntu xenial-updates main restricted
    deb-src http://archive.ubuntu.com/ubuntu xenial-updates main restricted
    
    ## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu
    ## team. Also, please note that software in universe WILL NOT receive any
    ## review or updates from the Ubuntu security team.
    deb http://archive.ubuntu.com/ubuntu xenial universe
    deb-src http://archive.ubuntu.com/ubuntu xenial universe
    deb http://archive.ubuntu.com/ubuntu xenial-updates universe
    deb-src http://archive.ubuntu.com/ubuntu xenial-updates universe
    
    ## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu
    ## team, and may not be under a free licence. Please satisfy yourself as to
    ## your rights to use the software. Also, please note that software in
    ## multiverse WILL NOT receive any review or updates from the Ubuntu
    ## security team.
    deb http://archive.ubuntu.com/ubuntu xenial multiverse
    deb-src http://archive.ubuntu.com/ubuntu xenial multiverse
    deb http://archive.ubuntu.com/ubuntu xenial-updates multiverse
    deb-src http://archive.ubuntu.com/ubuntu xenial-updates multiverse
    
    ## N.B. software from this repository may not have been tested as
    ## extensively as that contained in the main release, although it includes
    ## newer versions of some applications which may provide useful features.
    ## Also, please note that software in backports WILL NOT receive any review
    ## or updates from the Ubuntu security team.
    deb http://archive.ubuntu.com/ubuntu xenial-backports main restricted universe multiverse
    deb-src http://archive.ubuntu.com/ubuntu xenial-backports main restricted universe multiverse
    
    deb http://archive.ubuntu.com/ubuntu xenial-security main restricted
    deb-src http://archive.ubuntu.com/ubuntu xenial-security main restricted
    deb http://archive.ubuntu.com/ubuntu xenial-security universe
    deb-src http://archive.ubuntu.com/ubuntu xenial-security universe
    deb http://archive.ubuntu.com/ubuntu xenial-security multiverse
    deb-src http://archive.ubuntu.com/ubuntu xenial-security multiverse
    
    ## Uncomment the following two lines to add software from Canonical's
    ## 'partner' repository.
    ## This software is not part of Ubuntu, but is offered by Canonical and the
    ## respective vendors as a service to Ubuntu users.
    deb http://archive.canonical.com/ubuntu trusty partner
    # deb-src http://archive.canonical.com/ubuntu trusty partner
    
    # deb http://download.virtualbox.org/virtualbox/debian xenial contrib # disabled on upgrade to xenial
    # deb-src http://download.virtualbox.org/virtualbox/debian xenial contrib # disabled on upgrade to xenial
    /etc/apt/sources.list.d/librecad-dev-ubuntu-librecad-stable-xenial.list
    /etc/apt/sources.list.d/skype-stable.list
    /etc/apt/sources.list.d/yannubuntu-ubuntu-boot-repair-xenial.list
    rlcooper@rlcooper-HP-250-G3-Notebook-PC:~$

  10. #10
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    Re: Cannot updgrade from 16.04 to 18.04 Error in update?

    That line needs to either be removed or commented (#) out.
    Code:
    sudo -H gedit /etc/apt/sources.list
    And you need to disable all PPAs.
    librecad
    skype
    yannubuntu

    Should be able to do that with your sources gui.
    Code:
    software-properties-gtk
    Then update and upgrade

    That should allow you to move on to 18.04

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