Hey folks,

as you might know: Ubuntu 12.04 LTS, codenamed Precise Pangolin, was released today. I just want to show you how to upgrade your Ubuntu installation from version 11.10 to the latest 12.04. I will include screenshots (german) which will guide you through the process.

First, make sure you have all the latest software updates installed on your current 11.10 version of Ubuntu. Just open the Update Manager / Aktualisierungsverwaltung  (first icon), check for updates and install them. Click on the screenshots for bigger images.

NOTE: For those of you, who don’t have a desktop environment installed, the upgrade can be issued from the command line.

1) „sudo apt-get update; sudo apt-get upgrade;

2) Now make sure update manager core is installed or install it with „sudo apt-get install update-manager-core;“

3) Edit „/etc/update-manager/release-upgrades“ and put in „Prompt=normal;“

4) Now issue the following command „sudo do-release-upgrade -d

Upgrade Ubuntu from 11.10 Oneiric Ocelot to 12.04 LTS Precise Pangolin 1

 

Upgrade Ubuntu from 11.10 Oneiric Ocelot to 12.04 LTS Precise Pangolin 2

 

As you see on the top, there is notification that a new version of Ubuntu has been released. Klick the button saying Update / Aktualisieren to start the process. You will be shown some information about the software update. Let’s go for it by hitting update system / System aktualisieren.

Upgrade Ubuntu from 11.10 Oneiric Ocelot to 12.04 LTS Precise Pangolin 3

Upgrade Ubuntu from 11.10 Oneiric Ocelot to 12.04 LTS Precise Pangolin 4

After the new package sources have been checked, you are shown a notification with a summary on what exactly Ubuntu will update on your system. Most important here is download size (if you don’t have an unlimited plan) and the estimated time to download all those updated packages. With a 1 megabit connection it would take me 1 hour 48 minutes to download the new packages. Luckily I’m on a fibre channel connection 🙂

Upgrade Ubuntu from 11.10 Oneiric Ocelot to 12.04 LTS Precise Pangolin 5

Upgrade Ubuntu from 11.10 Oneiric Ocelot to 12.04 LTS Precise Pangolin 6

After the updated packages have been downloaded, the upgrade itself begins. On my Core2Duo Laptop, it will take some time…. This process will be MUCH faster on a SSD drive than on an ordinary hard drive.

Upgrade Ubuntu from 11.10 Oneiric Ocelot to 12.04 LTS Precise Pangolin 7

Upgrade Ubuntu from 11.10 Oneiric Ocelot to 12.04 LTS Precise Pangolin 8

After the upgrade, old packages are being remove from your hard drive to save some space.

Upgrade Ubuntu from 11.10 Oneiric Ocelot to 12.04 LTS Precise Pangolin 9

Upgrade Ubuntu from 11.10 Oneiric Ocelot to 12.04 LTS Precise Pangolin 10

Finally, time to reboot.

Upgrade Ubuntu from 11.10 Oneiric Ocelot to 12.04 LTS Precise Pangolin 11

As far as I can tell from testing out the new version of Ubuntu, the Precise Pangolin is running very smooth as you would expect from a long term release. If you got one of those most recent laptops with integrated graphics into the cpu, this version will even give you more battery life due to improved drivers for Intel integrated graphics.

One more thing: After the first reboot, you should check if you can update or install proprietary drivers / Zusätzliche Treiber to get optimal performance from your system. Just open the tool and see if for your ATI or NVIDIA graphics card you have got the most recent drivers installed. My laptop, only needs a proprietary backlight driver that let me use the brightness keys.

Upgrade Ubuntu from 11.10 Oneiric Ocelot to 12.04 LTS Precise Pangolin 12

Upgrade Ubuntu from 11.10 Oneiric Ocelot to 12.04 LTS Precise Pangolin 13

 

Now, have fun with your freshly upgraded Ubuntu 12.04 installation 🙂 Let me know what you think of my upgrade manual and of course of Ubuntu 12.04 in the comments section.