Can`t upgrade ubuntu to newest version, get this errors: while update manager starts

while press Continue

I tried to fix the errors through Synaptic, but the program did not see the broken packages. I also tried to fix errors using the terminal command, but it did not help

    $ sudo apt-get install -f
    Reading package lists... Done
    Building dependency tree       
    Reading state information... Done
    0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.

so how to fix this strange error?


The first thing to to is to run on a terminal:

# apt-get update

# apt-get dist-upgrade

The output from the upgrade could give a bit more information about what has happened.

If the issue does not get resolved by dist-upgrade then you might have a problem in your source.list files. In that case, we need to know what is in them, so you need to share what's in the /etc/apt/sources.list file and also what's in every file inside /etc/apt/sources.list.d/.


Replace the version name with the new Ubuntu version name (e.g trusty to xenial) in /etc/apt/sources.list and any others in /etc/apt/sources.list.d/* feel free to use sed.


  • apt-get update
  • apt-get upgrade
  • apt-get dist-upgrade

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