I've been trying to upgrade my version on Ubuntu from 9.10 to 10.04 (and eventually to the latest), but I'm having trouble with broken packages.

I've tried:

• apt-get update


• apt-get upgrade


• apt-get dist-upgrade


• dpkg --configure -a (not sure why)

I'm not sure what's relevant, so I'm going to dump what I've got:

Output from upgrade attempt:

$ sudo do-release-upgrade

Checking for a new ubuntu release

Done Upgrade tool signature

Done Upgrade tool

Done downloading            

extracting 'lucid.tar.gz'

authenticate 'lucid.tar.gz' against 'lucid.tar.gz.gpg' 

tar: Removing leading `/' from member names



Reading cache



Checking package manager

Reading package lists: Done

Reading state information: Done

Reading state information: Done

Reading state information: Done

Done downloading            

Reading package lists: Done

Reading state information: Done

Reading state information: Done

Reading state information: Done



Updating repository information

WARNING: Failed to read mirror file

Done downloading            



Checking package manager

Reading package lists: Donelucid-security/multiverse Packages: 96   gutsy/restricted Packages: 02  

Reading state information: Done

Reading state information: Done

Reading state information: Done



Calculating the changes



Calculating the changes



Could not calculate the upgrade 



An unresolvable problem occurred while calculating the upgrade: 

E:Unable to correct problems, you have held broken packages. 



This can be caused by: 

* Upgrading to a pre-release version of Ubuntu 

* Running the current pre-release version of Ubuntu 

* Unofficial software packages not provided by Ubuntu 



If none of this applies, then please report this bug against the 

'update-manager' package and include the files in 

/var/log/dist-upgrade/ in the bug report. 





Restoring original system state



Aborting

Reading package lists: Donekarmic-security/multiverse Packages: 95   utsy/restricted Packages: 02  

Reading state information: Done

Reading state information: Done

Reading state information: Done

/etc/apt/sources.list (with most of the comments stripped)

$ cat sources.list

# deb cdrom:[Ubuntu 9.10 _Karmic Koala_ - Release i386 (20091028.5)]/ karmic main restricted

# See http://help.ubuntu.com/community/UpgradeNotes for how to upgrade to

# newer versions of the distribution.



deb cdrom:[Ubuntu-Server 7.10 _Gutsy Gibbon_ - Release i386 (20071016)]/ gutsy main restricted

deb http://us.archive.ubuntu.com/ubuntu/ karmic main restricted

deb-src http://us.archive.ubuntu.com/ubuntu/ karmic main restricted



deb http://us.archive.ubuntu.com/ubuntu/ karmic-updates main restricted

deb-src http://us.archive.ubuntu.com/ubuntu/ karmic-updates main restricted



deb http://us.archive.ubuntu.com/ubuntu/ karmic universe

deb-src http://us.archive.ubuntu.com/ubuntu/ karmic universe

deb http://us.archive.ubuntu.com/ubuntu/ karmic-updates universe

deb-src http://us.archive.ubuntu.com/ubuntu/ karmic-updates universe



deb http://us.archive.ubuntu.com/ubuntu/ karmic multiverse

deb-src http://us.archive.ubuntu.com/ubuntu/ karmic multiverse

deb http://us.archive.ubuntu.com/ubuntu/ karmic-updates multiverse

deb-src http://us.archive.ubuntu.com/ubuntu/ karmic-updates multiverse



# deb http://us.archive.ubuntu.com/ubuntu/ karmic-backports main restricted universe multiverse

# deb-src http://us.archive.ubuntu.com/ubuntu/ karmic-backports main restricted universe multiverse



## respective vendors as a service to Ubuntu users.

deb http://archive.canonical.com/ubuntu karmic partner

deb-src http://archive.canonical.com/ubuntu karmic partner



deb http://security.ubuntu.com/ubuntu karmic-security main restricted

deb-src http://security.ubuntu.com/ubuntu karmic-security main restricted

deb http://security.ubuntu.com/ubuntu karmic-security universe

deb-src http://security.ubuntu.com/ubuntu karmic-security universe

deb http://security.ubuntu.com/ubuntu karmic-security multiverse

deb-src http://security.ubuntu.com/ubuntu karmic-security multiverse



## Packages for Chrome

#deb http://ppa.launchpad.net/chromium-daily/ppa/ubuntu karmic main

#deb-src http://ppa.launchpad.net/chromium-daily/ppa/ubuntu karmic main



## Latest PHP packages

#deb http://php53.dotdeb.org stable all

#deb-src http://php53.dotdeb.org stable all

#deb http://security.ubuntu.com/ubuntu jaunty-security main

The last few lines of /var/log/dist-upgrade/main.log

2011-08-02 19:21:54,211 DEBUG entry 'deb-src http://security.ubuntu.com/ubuntu lucid-security multiverse' updated to new dist

2011-08-02 19:21:54,246 DEBUG running doUpdate() (showErrors=True)

2011-08-02 19:22:24,895 DEBUG openCache()

2011-08-02 19:22:24,895 DEBUG failed to SystemUnLock() (E:Not locked)

2011-08-02 19:22:29,991 DEBUG /openCache(), new cache size 30853

2011-08-02 19:22:29,991 DEBUG needServerMode(): run in 'desktop' mode, (because of pkg 'ubuntu-desktop')

2011-08-02 19:26:29,025 DEBUG Installing 'upstart-logd' (priority in required set 'required' but not scheduled for install)

2011-08-02 19:26:30,695 ERROR Dist-upgrade failed: 'E:Unable to correct problems, you have held broken packages.'

2011-08-02 19:26:30,696 DEBUG abort called

2011-08-02 19:26:30,697 DEBUG openCache()

2011-08-02 19:26:30,698 DEBUG failed to SystemUnLock() (E:Not locked)

2011-08-02 19:26:33,728 DEBUG /openCache(), new cache size 29182

2011-08-02 19:26:33,728 DEBUG enabling apt cron job