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Thread: Trouble upgrading from 18.04 to 20.04

  1. #1
    Join Date
    Feb 2016
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    84

    Trouble upgrading from 18.04 to 20.04

    Upgrading my current 18.04 installation to 20.04 fails.

    The log file is here: https://pastebin.com/BNDbJNyD

    Suggestions on what the problem could be and what I can do is appreciated.

    Thanks!

  2. #2
    Join Date
    May 2013
    Location
    Galiza
    Beans
    3,161
    Distro
    Ubuntu

    Re: Trouble upgrading from 18.04 to 20.04

    You have lots of PPAs. Try disabling them all first.

  3. #3
    Join Date
    Feb 2016
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    84

    Re: Trouble upgrading from 18.04 to 20.04

    Unable to disable using software updater GUI (permission denied). what is the command line syntax to disable all PPA's?

  4. #4
    Join Date
    May 2013
    Location
    Galiza
    Beans
    3,161
    Distro
    Ubuntu

    Re: Trouble upgrading from 18.04 to 20.04

    Again, open Software & Updates > Other software and remove or deselect them there. This should be enough.
    The command to remove PPAs is the some as to add them but with --remove argument.

  5. #5
    Join Date
    Feb 2016
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    84

    Re: Trouble upgrading from 18.04 to 20.04

    O.k. - I used synaptic and was able to uncheck all of the PPA's.

    Upgrade still failed:

    Checking package manager
    Reading package lists... Done
    Building dependency tree
    Reading state information... Done

    Calculating the changes

    Calculating the changes

    Could not calculate the upgrade

    An unresolvable problem occurred while calculating the upgrade.

    If none of this applies, then please report this bug using the
    command 'ubuntu-bug ubuntu-release-upgrader-core' in a terminal. If
    you want to investigate this yourself the log files in
    '/var/log/dist-upgrade' will contain details about the upgrade.
    Specifically, look at 'main.log' and 'apt.log'.


    Restoring original system state

    Aborting
    Reading package lists... Done
    Building dependency tree
    Reading state information... Done

    I'll paste the logs to pastebin shortly

  6. #6
    Join Date
    Jul 2005
    Location
    I think I'm here! Maybe?
    Beans
    Hidden!
    Distro
    Xubuntu 20.04 Focal Fossa

    Re: Trouble upgrading from 18.04 to 20.04

    Thanks for creating this new thread; it will make life a lot less confusing for all of us.
    Please note also, that I have attempted to clean up the older thread that was hijacked and many posts from that are now jailed and out of public view.

    I suspect that as well as disabling all the PPAs you had in 18.04 that you ay also need to uninstall the packages that were added by those PPAs as the packages pulled in by them may still be interfering with your upgrade.

    I suggest you install ppa-purge in your 18.04 system and use that to clean up the OS before attempting the upgrade again.
    Last edited by ajgreeny; November 23rd, 2020 at 09:01 PM. Reason: Info about jailed posts

  7. #7
    Join Date
    Feb 2016
    Beans
    84

    Re: Trouble upgrading from 18.04 to 20.04

    It would be good to "learn" what the upgrade process didn't like about my existing 18.04 system.

    Here is the latest log: https://pastebin.com/CFXJ908H
    libsane seems to be a problem, but removing it
    wants to remove ubuntu-desktop as well.
    Last edited by michael351; November 23rd, 2020 at 11:16 PM.

  8. #8
    Join Date
    Feb 2016
    Beans
    84

    Re: Trouble upgrading from 18.04 to 20.04

    Here is the main.log from the attempted 20.04 upgrade:
    https://pastebin.com/EYJGFUU2

    I don't know what to try next. Thanks for any help.

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