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I actually joined Ask Ubuntu to answer a question that I had found an answer to but, unfortunately, I'm too new to do that... so I thought that I would post my experiences and share what I learned in case there is someone else out there who needs to google as much as I did to achieve something similar. Needless to say, this isn't really a Question but being a noob it is all I seem able to do.

Upgrading

Upgrading takes a long time. Going from 10.10 to 12.04 took me a day (including all my Googling and problem solving). Upgrading to another EOL distribution was different to upgrading to an active distribution (precise/12.04) so I'll approach them in turn.

Upgrading to another EOL distribution

For EOL distributions the repositories list in /etc/apt/sources.list needs to be updated

edit /etc/apt/sources.list

(I use edit as an alias for my favourite editor)

to contain:

deb http://old-releases.ubuntu.com/ubuntu/ CODENAME main restricted universe multiverse
deb http://old-releases.ubuntu.com/ubuntu/ CODENAME-updates main restricted universe multiverse
deb http://old-releases.ubuntu.com/ubuntu/ CODENAME-security main restricted universe multiverse

CODENAME needs to be replaced with the name of your EOL distribution. e.g. maverick. natty, oneiric etc.

In all my googling, no one ever said how many repositories should be referenced so I only ever listed the repositories for my current version and for my next version. I can't attribute any of the problems I encountered to this.

Commands for Upgrading

Next, the following commands are all that I needed. Sometimes it would look like I had entered dependency hell but the answer was always straight forward (see below). To keep this short, I won't explain each command here.

apt-get clean 
apt-get update
apt-get -f dist-upgrade
apt-get -f install
dpkg --configure -a
apt-get autoremove

To view your Ubuntu version:

lsb_release -a

Of course, not one upgrade went smoothly so those weren't the only commands I had to use and I had to use some of them many times to get through each upgrade. However, it is important to note that when I had issues that I had to google, it was mostly these commands that I kept coming back to in order to solve them.

Encountered Problems

The Unpacking Problem

If you get a dpkg error that says "trying to overwrite" like this one (this wasn't mine)

Unpacking replacement smplayer ...
dpkg: error processing /var/cache/apt/archives/smplayer_0.6.9+svn3595-1ppa1~maverick1_i386.deb (--unpack):
 trying to overwrite '/usr/share/smplayer/translations/smplayer_eu.qm', which is also in package smplayer-translations 0.6.9-1
dpkg-deb: subprocess paste killed by signal (Broken pipe)

The solution is to manually --force-overwrite the package extraction.

dpkg -i --force-overwrite /var/cache/apt/archives/smplayer_0.6.9+svn3595-1ppa1~maverick1_i386.deb

Cannot Remove Errors

Most of these can be done manually. They aren't exactly critical but I did them anyway to keep the output of my upgrade commands simple.

11.10 Dependency Hell

After upgrading to 11.10 I had a few circular dependency issues that weren't going away and I couldn't solve them with my apt-get or dpkg commands as I had on previous occasions and nothing else was working so I just gave up and hoped that a "do-release-upgrade" to 12.04 would solve them (which it did).

Upgrading to an active distribution

12.04

The final upgrade for me was to go to precise (12.04).

Sources List

First, I had messed up my sources list so I needed to rebuild it for the upgrade to 12.04. I used the Ubuntu Sources List Generator to do this and selected everything. Perhaps this wasn't the best of ideas but it worked out.

The first four lines I was given were:

deb http://uk.archive.ubuntu.com/ubuntu/ precise-security
deb http://uk.archive.ubuntu.com/ubuntu/ precise-updates
deb http://uk.archive.ubuntu.com/ubuntu/ precise-proposed
deb http://uk.archive.ubuntu.com/ubuntu/ precise-backports

apt-get didn't like these so I added "main restricted universe multiverse" to each of them.

deb http://uk.archive.ubuntu.com/ubuntu/ precise-security main restricted universe multiverse
deb http://uk.archive.ubuntu.com/ubuntu/ precise-updates main restricted universe multiverse
deb http://uk.archive.ubuntu.com/ubuntu/ precise-proposed main restricted universe multiverse
deb http://uk.archive.ubuntu.com/ubuntu/ precise-backports main restricted universe multiverse

That worked but I couldn't upgrade with apt-get as I had before because of the dependency hell that I was in so I just did

do-release-upgrade

and everything turned out OK. It took over 2 hours to finish though which was a VERY long time compared to the other upgrades.

After All That

After all that, I have no dependency issues and I didn't even have my normal après upgrade desktop issues. In fact, there were only two issues with the desktop. I find this simply astounding as I have always had tons of issues after previous upgrades.

No Audio

This is not an unusual problem for me after an upgrade and it is always difficult to track down. However this time I noticed that 12.04 uses pulseaudio so I installed pavucontrol.

apt-get install pavucontrol

I then ran it from the desktop run box by simply entering pavucontrol

All I had to do was unmute the audio and move the sliders for left and right output and voilà. My computer has never been so loud.

No Auto Login

I haven't solved this one yet. I have raised a question for it though.

share|improve this question
    
you can always answer.If it can be improved, we are there to edit it. –  Registered User Feb 27 at 13:45
    
The tour/help area says anyone can answer but I do not see how to answer existing questions. When I try to answer someone else's question I am told that I need a 50 reputation to comment, 15 to vote for an existing answer or 10 to provide answer. –  00Kell Feb 27 at 17:40
    
you must be trying to answer a protected question. these questions have higher reputation requirement. –  Registered User Feb 28 at 16:20

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