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I recently upgraded from Ubuntu 12.10 to 13.04 and since then I have the strong impression that I am not getting any update for the main packages.

In fact, since the upgrade to Ubuntu 13.04 some 15 days ago, I runsudo apt-get update regularly and look at what packages are updated. Based on my experience with Ubuntu, I can tell I am getting updates only for PPAs (like Novacut) and Partner repositories (like Skype). I am not getting updates for other packages.

I don't get any error message when running sudo apt-get update. I am still able to install whatever I want with the Software Center or the command line. Here is the content of /etc/apt/sources.list:

# deb cdrom:[Ubuntu 13.04 _Raring Ringtail_ - Alpha amd64 (20130402.1)]/ raring main restricted
# deb cdrom:[Ubuntu 12.10 _Quantal Quetzal_ - Release amd64 (20121017.5)]/ quantal main restricted

# See http://help.ubuntu.com/community/UpgradeNotes for how to upgrade to
# newer versions of the distribution.
deb http://ftp.uni-erlangen.de/mirrors/ubuntu/ raring main restricted universe

## Major bug fix updates produced after the final release of the
## distribution.
deb http://ftp.uni-erlangen.de/mirrors/ubuntu/ raring-updates main restricted universe

## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu
## team. Also, please note that software in universe WILL NOT receive any
## review or updates from the Ubuntu security team.

## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu 
## team, and may not be under a free licence. Please satisfy yourself as to 
## your rights to use the software. Also, please note that software in 
## multiverse WILL NOT receive any review or updates from the Ubuntu
## security team.
deb http://ftp.uni-erlangen.de/mirrors/ubuntu/ raring multiverse
deb http://ftp.uni-erlangen.de/mirrors/ubuntu/ raring-updates multiverse

## N.B. software from this repository may not have been tested as
## extensively as that contained in the main release, although it includes
## newer versions of some applications which may provide useful features.
## Also, please note that software in backports WILL NOT receive any review
## or updates from the Ubuntu security team.

deb http://ftp.uni-erlangen.de/mirrors/ubuntu/ raring-security main restricted universe
deb http://ftp.uni-erlangen.de/mirrors/ubuntu/ raring-security multiverse

## Uncomment the following two lines to add software from Canonical's
## 'partner' repository.
## This software is not part of Ubuntu, but is offered by Canonical and the
## respective vendors as a service to Ubuntu users.
# deb-src http://archive.canonical.com/ubuntu quantal partner

## This software is not part of Ubuntu, but is offered by third-party
## developers who want to ship their latest software.
deb http://extras.ubuntu.com/ubuntu raring main
# deb-src http://extras.ubuntu.com/ubuntu quantal main
deb http://repository.spotify.com stable non-free #Spotify
# deb http://apt.last.fm/debian raring main #Last.fm disabled on upgrade to raring

# See http://help.ubuntu.com/community/UpgradeNotes for how to upgrade to
# newer versions of the distribution.

## Major bug fix updates produced after the final release of the
## distribution.

## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu
## team. Also, please note that software in universe WILL NOT receive any
## review or updates from the Ubuntu security team.

## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu 
## team, and may not be under a free licence. Please satisfy yourself as to 
## your rights to use the software. Also, please note that software in 
## multiverse WILL NOT receive any review or updates from the Ubuntu
## security team.

## N.B. software from this repository may not have been tested as
## extensively as that contained in the main release, although it includes
## newer versions of some applications which may provide useful features.
## Also, please note that software in backports WILL NOT receive any review
## or updates from the Ubuntu security team.


## Uncomment the following two lines to add software from Canonical's
## 'partner' repository.
## This software is not part of Ubuntu, but is offered by Canonical and the
## respective vendors as a service to Ubuntu users.
deb http://archive.canonical.com/ubuntu raring partner

## This software is not part of Ubuntu, but is offered by third-party
## developers who want to ship their latest software.
deb-src http://extras.ubuntu.com/ubuntu raring main

How can I check whether my impression is correct? How do I correct the problem?

I tried deleting the /etc/apt/sources.list file and then repopulating it automatically by running an update, but nothing changed.

share|improve this question
    
The mirrors you are using might not be updated yet. Not all mirrors are synced at the same time. –  Thomas W. May 4 '13 at 3:15
2  
You haven't mentioned any reason why you think you aren't getting main updates. –  psusi May 4 '13 at 3:37
    
Thank you @psusi , I edited the question to explain that I look at the update contents regularly and they seem to never be in the main repository, based on my experience. –  Agmenor May 4 '13 at 10:36

2 Answers 2

Your sources.list looks similar to mine (which is a fresh install of raring).

From a terminal can you do :

sudo apt-get update|grep main

If apt is checking for updates on the main repo you should see lines like: "Hit http://ftp.uni-erlangen.de/mirrors/ubuntu/ raring/main Translation-en" (Translation-en is an example there should be other lines as well)

If you do your updates from the command line (sudo apt-get dist-upgrade) you will where they are being pulled from.

For example this morning (May 4) there were kernel upgrades from main )

share|improve this answer
    
The output says Hit http://ftp.uni-erlangen.de/mirrors/ubuntu/ raring/main Translation-en indeed, but I did not get a kernel update. Not any update, in fact. –  Agmenor May 4 '13 at 10:55
up vote 0 down vote accepted

I switched the software source from the local university one (Erlangen, see sources.list file) to the main German one. Now the Software Updater did download updates, including the kernel updates rtmie is talking about.

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