[HowTo] Install KDE 4.3 Plasma/Air Theme on [k]Ubuntu 9.04 Linux

After six months of development, the K Desktop Environment 4.3.0 was launched on August 4th, 2009.
It fixes over 10,000 bugs and brings about 2,000 features. Among some of the most interesting ones in the KDE 4.3.0 desktop environment we can mention the new Arora web browser that will replace Konqueror, the beautiful Air theme, new eye-candy effects, a redesigned run dialog, lots of Plasma improvements, a new network manager, updated applications and many more. With this said, the KDE 4.3.0 is the most modern and beautiful desktop environment to date.

Today's tutorial is for those of you who don't want to wait until late October for the Kubuntu 9.10 (Karmic Koala) release, which will come with a default KDE 4.3.0 installation, and it will teach you, step by step, how to install the brand-new KDE 4.3.0 desktop environment on your existing Ubuntu 9.04 (Jaunty Jackalope) installation.


Installing KDE 4.3 in Ubuntu Jaunty 9.04

If you still want to continue, you can add these repositories by running the following command in a terminal:

sudo gedit /etc/apt/sources.list

or

sudo nano /etc/apt/sources.list

deb http://ppa.launchpad.net/kubuntu-ppa/backports/ubuntu jaunty main
deb http://ppa.launchpad.net/kubuntu-ppa/staging/ubuntu jaunty main



Then add the GPG key:

sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 8AC93F7A



And finally to upgrade to KDE 4.3:

sudo aptitude update && sudo aptitude dist-upgrade


Or, if you don't have KDE installed already:

sudo aptitude install kubuntu-desktop


It is better to use 'aptitude' because if you don't like your new desktop you can simply uninstall the packages with all its dependencies and you are back to the system state where you were before. That is not possible directly with apt-get (or synaptic etc.) (works with --purge but I find aptitude better, but let's not get into a pointless discussion). But if you normally use apt-get, than use that instead of aptitude!

Removing KDE 4.3 from Jaunty and going back to 9.04 KDE version (4.2.2)
To revert back to the default KDE version in Kubuntu 9.04, you must firstly remove KDE entirely:
If you installed it using aptitude, not apt-get:

sudo aptitude remove kubuntu-desktop


If you installed it using apt-get:

sudo apt-get autoremove kde --purge

or

sudo apt-get autoremove kubuntu-desktop -purge


Then remove the newly added repositories press Alt + F2 on your keyboard and enter:

gksu gedit /etc/apt/sources.list

and in this file, search for the 2 added repositories (from the beginning of this post) and remove them (they probably are at the bottom of the file). Then open a terminal and:

sudo aptitude update && sudo aptitude install kubuntu-desktop


Better Tutorial: http://news.softpedia.com/news/How-to-Install-KDE-4-3-on-Ubuntu-9-04-118645.s...

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[GenerationNoise]

can you use this theme in windowblinds?

[MegaDemon28]

man your Ubuntu 9.04 Linux is awesome........

[1gn1t0r]

Thanks dude

[xxhfdxx]

thank you :)

[ameriman]

really confused... im new to ubuntu and my sources list doesn't have that in there...

[synistersixxfold]

What theme are you using on this video? it looks great. Thanks