3

When I'm trying to update my system (Linux Ubuntu 16.04 LTS) through Software Updater, I receive the following error message:

Failed to download repository information

Check your Internet connection.

First I thought it might be the server where it's trying to download the repositories, so I went to Software Updater -> Settings -> Ubuntu Software and changed the Download from selection from Server for United States to Other -> Select Best Server. As a result, my new server is http://www.nic.funet.fi/pub/mirrors/archive.ubuntu.com

When returning to the main window, I receive a following notification:

The information about available software is out-of-date

To install software and updates from newly added or changed sources,
you have to reload the information about available software. 

You need a working Internet connection to continue.

Now, after clicking the button Reload, Software Updater starts to update the cache. However, this results into a failure with the following error message:

Failed to download repository information

Check your Internet connection.

Details

W:Target Packages (Packages) is configured multiple times in
/etc/apt/sources.list:53 and /etc/apt/sources.list:54, W:Target
Translations (en) is configured multiple times in
/etc/apt/sources.list:53 and /etc/apt/sources.list:54, W:The 
repository 'http://ppa.launchpad.net/landronimirc/clamtk/ubuntu xenial 
Release' does not have a Release file., W:Data from such a repository 
can't be authenticated and is therefore potentially dangerous to use., 
W:See apt-secure(8) manpage for repository creation and user 
configuration details., E:Failed to fetch
http://ppa.launchpad.net/landronimirc/clamtk/ubuntu/dists/xenial/main/bina
ry-amd64/Packages  404  Not Found, E:Some index files failed to 
download. They have been ignored, or old ones used instead.

So, it seems I am unable to update my system at the moment. Does any of the good people here on the forum know how to fix the problem?

Thanks in advance! :-)

Jayaguru-Shishya
  • 483

2 Answers2

2

The solution is very simple.

First, you have two problems.

The errors:

W:Target Packages (Packages) is configured multiple times in /etc/apt/sources.list:53 and /etc/apt/sources.list:54

W:Target Translations (en) is configured multiple times in /etc/apt/sources.list:53 and /etc/apt/sources.list:54,

are because you have some duplicated information in the file /etc/apt/sources.list. In terminal, type cd /etc/apt, then gksudo gedit /etc/apt/sources.list. Review lines 53 and 54, and remove the duplication and save the file.

The error:

W:The repository http://ppa.launchpad.net/landronimirc/clamtk/ubuntu xenial

is because you've got the wrong Ubuntu version for this particular PPA. Change xenial to saucy. The incorrect entry will either be in the file /etc/apt/sources.list, or /etc/apt/sources.list.d/landronimirc-clamtk-quantal.list (quantal may be something else).

Ask if you need more help. Cheers, Al

heynnema
  • 73,649
-1

Well I recommend to follow the steps below in your terminal.

  1. Become privileged user.

    sudo -i

  2. Take a backup of your current source list.

    mv /etc/apt/sources.list /etc/apt/sources.list.backup

  3. Clean your system package cache.

    sudo apt-get clean; apt-get autoclean

  4. Add new source list Igenerated for you with United States mirror.

    curl https://repogen.simplylinux.ch/txt/xenial/sources_e3432824238c837b112c3056e4e4e4c5e16313a2.txt | sudo tee /etc/apt/sources.list

  5. Add the GPG key.

    curl https://repogen.simplylinux.ch/txt/xenial/gpg_e3432824238c837b112c3056e4e4e4c5e16313a2.txt | sudo tee /etc/apt/gpg_keys.txt

  6. Now update.

    sudo apt-get update

That's it. Now try your Software Center / Updater.

Eliah Kagan
  • 119,640
SAGAR Nair
  • 1,415