How to Install KDE 4.2 beta in Ubuntu 8.10 (Intrepid Ibex)
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If you want to know what is new in KDE 4.2 check here
Important Note:- KDE 4.2 is still in beta and can be buggy. It’s advised to only use it for testing purposes. The final release is expected in January 2009.
Install KDE 4.2 beta in Ubuntu 8.10
Go to System->Administration->Software Sources now click on Third-Party Software tab and click Add. Add the following line when it ask for software updates click yes
deb http://ppa.launchpad.net/project-neon/ubuntu intrepid main
Now you need to open the terminal windows enter the following command
sudo aptitude install kde-nightly
or
You need to edit the /etc/apt/sources.list file
sudo gedit /etc/apt/sources.list
add the following line save and exit
deb http://ppa.launchpad.net/project-neon/ubuntu intrepid main
Update the source list file using the following command
sudo aptitude update
Install KDE 4.2 using the following command
sudo aptitude install kde-nightly
This will complete the installation now you need to logout and select KDE session once you logged in you should see similar to the following screen

KDE 4.2 Desktop
Did exactly as written but says it can’t be found when you run the terminal command.
@Jimi
Try now and let me know you have any problem
How easy is it to revert to gnome? Or does it let you choose what to use?
I would love to try it but I am afraid to mess up my gnome installation…
@If you want to try i would suggest just use your test system and if you try on your production system it might mess up
Thanks for making this available. It worked well and, so far, I’m impressed. It is so much better than kde4.1 that came with kubuntu 8.10.
Worked well on my installation, however firefox looks kinda bad with the default theme. Also my volume is too low, how can I make it louder?
I agree the 4.1 version of KDE that shipped with 8.10 i found terrible i doubt 4.2 could be anymore buggy.
I would appreciate general advice on how often to download and install the “nightly” upgrades.
What’s the best way to uninstall this?
I have installed the KDE4.2 and have some issues. I would like to uninstall. Would someone help?
Found it to be slow and buggy, removed by:
sudo apt-get kde-nightly
sudo apt-get autoremove
Some updates to qt4 broke smplayer and vlc for me.
correction: sudo apt-get remove kde-nightly