Problem upgrading an offline computer

[Goh Lip]

On Thu, 10 Feb 2011 04:14:05 +0800, Mariano Jara <marianojara at afip.gov.ar>  
wrote:

> I run Synaptic and went to Settings -> Repositories and unchecked
> everything on Ubuntu Software tab, Updates tab and deleted all entries
> in Other Software tab (most of them were Jaunty and Karmic). Then
> reloaded and exit Synaptic.

Mariano, what the link says and your error message
> This can be caused by:
> *** Unofficial software packages not provided by Ubuntu

means that you need to disable your other non-official repository packages  
first, that is
o all ppa repositories
o all other manually installed packages... dpkg -i xxxx.deb

You do not have to disable your ubuntu packages.

As an example, if I installed Opera through their web page " dpkg -i  
....opera.deb"
and if I have some ppa repository enabled, .....installed Firefox4.0  
beta... this is what I should do *before* I try to upgrade to maverick.

sudo apt-get remove opera
sudo apt-get remove firefox4.0_beta
go to synaptic..remove ppa repository
sudo apt-get update/upgrade       (this is important)

Then and only then go and upgrade to maverick.

ps: after the successful upgrade, you can always get back your opera  
(without downloading again), but I don't think you can with the ppa  
packages.


Hope this is clear.

Good luck, regards - Goh Lip