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install kde4 ubuntu

KDE 4 has been released. I've received couple of questions about installing KDE 4 under Ubuntu Linux 7.10. KDE 4 Packages are available for Ubuntu Linux version 7.10 (Gutsy) and from development Ubuntu Linux Hardy version. They install to /usr/lib/kde4 and can be installed alongside your existing KDE 3. However these packages are not compatible with KDE 4 beta packages. Following simple step will help you install KDE 4.

How do I install KDE 4 under Ubuntu Linux?

First you need to update Ubuntu package source file.

WARNING! These examples may crash your Desktop as KDE v4.0 packages are not 100% compatible with Ubuntu 7.10. Following instructions worked on my desktop but failed to work on Laptop. YMMV.

Step # 1: Update Source File

Open a terminal

Open /etc/apt/sources.list file using a text editor such as vi or gedit, enter:
$ sudo vi /etc/apt/sources.list
OR
$ sudo gedit /etc/apt/sources.list
Append following line:
deb http://ppa.launchpad.net/kubuntu-members-kde4/ubuntu gutsy main
Close and save the file. Type the following command to update package list:
$ sudo apt-get update

GUI tool to update software source

Alternatively, you can use GUI tool by visiting System > Administration > Software Sources > Third Party Software > Add > Enter url 'deb http://ppa.launchpad.net/kubuntu-members-kde4/ubuntu gutsy main' > Add Source > Update > Close
Add KDE 4 as Software Source for Ubuntu Linux
(Fig. 01: Update Software Source for KDE 4)

Step # 2: Install KDE 4 desktop

To install kde 4, enter:
$ sudo apt-get install kde4-core
You'll get a warning when installing kde 4, just force to install the same without verification:

WARNING: The following packages cannot be authenticated!
Install these packages without verification [y/N]? y

Output:

Reading package lists... Done
Building dependency tree
Reading state information... Done
The following extra packages will be installed:
  dbus-x11 dolphin-kde4 kappfinder-kde4 kde-icons-oxygen kde4libs-bin kdebase-bin-kde4 kdebase-data-kde4 kdebase-kde4 kdebase-runtime
  kdebase-runtime-bin-kde4 kdebase-runtime-data kdebase-runtime-data-common kdebase-workspace kdebase-workspace-bin kdebase-workspace-data
  kdelibs5 kdelibs5-data kdepasswd-kde4 kdepimlibs-data kdepimlibs5 kfind-kde4 klipper-kde4 konqueror-kde4 konqueror-nsplugins-kde4
  konsole-kde4 ksysguard-kde4 ksysguardd-kde4 kwin-kde4 kwrite-kde4 libcapseo0 libcaptury0 libclucene0 libexiv2-0 libgpgme11 libkonq5
  libkonq5-templates libphonon4 libplasma1 libpth20 libqimageblitz4 libraptor1 librasqal0 librdf0 libsoprano4 libstreamanalyzer0
  libstreams0 libstrigiqtdbusclient0 systemsettings-kde4
Suggested packages:
  kdebase kde-i18n sword-frontend gpgsm
Recommended packages:
  exiv2 raptor-utils redland-utils
The following NEW packages will be installed:
  dbus-x11 dolphin-kde4 kappfinder-kde4 kde-icons-oxygen kde4-core kde4libs-bin kdebase-bin-kde4 kdebase-data-kde4 kdebase-kde4
  kdebase-runtime kdebase-runtime-bin-kde4 kdebase-runtime-data kdebase-runtime-data-common kdebase-workspace kdebase-workspace-bin
  kdebase-workspace-data kdelibs5 kdelibs5-data kdepasswd-kde4 kdepimlibs-data kdepimlibs5 kfind-kde4 klipper-kde4 konqueror-kde4
  konqueror-nsplugins-kde4 konsole-kde4 ksysguard-kde4 ksysguardd-kde4 kwin-kde4 kwrite-kde4 libcapseo0 libcaptury0 libclucene0 libexiv2-0
  libgpgme11 libkonq5 libkonq5-templates libphonon4 libplasma1 libpth20 libqimageblitz4 libraptor1 librasqal0 librdf0 libsoprano4
  libstreamanalyzer0 libstreams0 libstrigiqtdbusclient0 systemsettings-kde4
0 upgraded, 49 newly installed, 0 to remove and 2 not upgraded.
Need to get 105MB of archives.
After unpacking 204MB of additional disk space will be used.
Do you want to continue [Y/n]? y
WARNING: The following packages cannot be authenticated!
  libphonon4 libstreams0 libstreamanalyzer0 kdelibs5-data kde4libs-bin kdelibs5 libstrigiqtdbusclient0 libkonq5-templates libkonq5
  dolphin-kde4 kappfinder-kde4 kdebase-data-kde4 kdebase-bin-kde4 kdepasswd-kde4 kfind-kde4 konqueror-nsplugins-kde4 konqueror-kde4
  konsole-kde4 kwrite-kde4 kdebase-kde4 kdebase-workspace-data libplasma1 ksysguardd-kde4 ksysguard-kde4 kdebase-workspace-bin klipper-kde4
  kwin-kde4 systemsettings-kde4 kdebase-workspace kdepimlibs-data kdepimlibs5 kde4-core...
Install these packages without verification [y/N]? y
Get:1 http://ppa.launchpad.net gutsy/main libphonon4 4:4.0.0-0ubuntu2~gutsy1~ppa1 [164kB]
Get:2 http://archive.ubuntu.com gutsy-backports/universe kde-icons-oxygen 4:4.0.0-0ubuntu1~gutsy1 [45.4MB]
Get:3 http://in.archive.ubuntu.com gutsy/main dbus-x11 1.1.1-3ubuntu4 [34.8kB]
................
...
.........
Setting up systemsettings-kde4 (4:4.0.0-0ubuntu7~gutsy1~ppa1) ...
Setting up kdebase-workspace (4:4.0.0-0ubuntu7~gutsy1~ppa1) ...
Setting up kde4-core (3.3~gutsy1~ppa1) ...
Processing triggers for libc6 ...
ldconfig deferred processing now taking place

Note: It may take some time to install kde 4. You also need to disable compiz 3d desktop effect support.

References:

=> Kubuntu Project - Be Free with KDE 4.0