Today I tried about 12 Times to install some updates ... without any result:

First problem: The software updater needs about 20 to 30 Minutes to check for the updates, which seems not normal to me (normally not more than 2 minutes).

Second problem: After authenticate for updates with password there comes the following info: "software updater: Requires installation of untrusted packages. This requires packages from unauthenticated sources." When I click »okay« the software updater disappears.

What can I do to install the updates?

  • It sounds like you've added some new software sources (maybe a PPA?). That's the "untrusted packages" bit. Can you try disabling/removing any non-default sources and see if that solves it? Commented Nov 17, 2015 at 2:51
  • It can't be the problem, because the only extra software on the system is an firefox-browser, nothing else. I made dozens of updates, in the last months and they all worked fine. I didn't install anything in this time.
    – oxid aviah
    Commented Nov 17, 2015 at 3:35

1 Answer 1


You will need to open the terminal and type these commands:

sudo apt-get update

Wait after process update's done.

Then run this command

sudo apt-get upgrade

Have you tried that command on your terminal? Then of the end command update and upgrade list what's the result? Any error notes on your terminal?

  • Thanks a lot for the recommendation ... it worked without any error notes on the terminal. :-)
    – oxid aviah
    Commented Nov 17, 2015 at 4:34
  • ok then, is your problem solved?
    – ferry
    Commented Nov 17, 2015 at 5:56
  • Yes ... the problem is solved.
    – oxid aviah
    Commented Nov 18, 2015 at 9:10
  • congratulations :)
    – ferry
    Commented Nov 18, 2015 at 13:06
  • @oxidaviah , would please accept this answer as it is the one that works for you.
    – user.dz
    Commented Dec 18, 2015 at 21:10

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