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The other day I was installing updates while suddenly my laptop crashed (battery unplugged..) Now I receive the following dialog whilst opening the update manager:

partial upgrade

So far I've tried the following commands without succes (in this order):

sudo apt-get update && sudo apt-get upgrade

sudo apt-get update && sudo apt-get -f install

sudo dpkg --configure -a 

sudo apt-get autoclean

I also noticed in 'sourcecode' was selected in software sources. I unselected and reloaded repositories but no chance whatsoever.

I saw the following line in /etc/apt/sources.list

deb http://nl.archive.ubuntu.com/ubuntu/ xenial-backports main restricted universe multiverse

Could it be this has something to do with it? What else could I do to cancel it because doing this partial upgrade could cause a lot of problems as I understand (see this link)

  • What that error says I have no idea! – George Udosen Jul 5 '17 at 19:23
  • you want to upgrade or cancel it? – ravery Jul 5 '17 at 19:23
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    @george -- looks like a notice to finish the upgrade – ravery Jul 5 '17 at 19:25
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    @george I've changed thd screenshot to English – wouter205 Jul 6 '17 at 4:30
  • @wouter205 did you click the partial upgrade button? – George Udosen Jul 6 '17 at 4:52
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I've managed to solve this problem. I'm not 100% sure what the final solution was but it went as following:

  1. Disabled out of date/unreachable PPA's

    I got an error notification regarding wine which was missing some dependencies (fyi: http://ppa.launchpad.net/rebuntu16/avidemux+unofficial/ubuntu & http://files.eid.belgium.be/debian)

  2. Clean up aptitude cache:

    sudo apt-get clean
    sudo apt-get update
    sudo apt-get upgrade

After this, update manager is functioning again.

Edit 24/09/17:

The previous answer was incorrect. I did the 'partial upgrade' which updated all the packages which were interupted in the previous update.

So to summarize: you can do the 'partial upgrade' without harm. The warning on the Ubuntu wiki is not applicable to this situation.

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Enter these commands:

sudo apt-get install ubuntu-desktop

Restart your PC

sudo apt-get update && sudo apt-get upgrade

If it won't work you can contact me on discord. Pro#0116

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