Kubuntu 13.04 "Raring Ringtail"
|Company / developer||Blue Systems, Canonical Ltd., and community contributors|
|Source model||Free and open source software|
|Initial release||April 8, 2005|
|Latest stable release||13.04 (Raring Ringtail) / April 25, 2013|
|Available language(s)||Multilingual (more than 55)|
|Update method||PackageKit and/or APT|
|Package manager||dpkg (Debian GNU/Linux Package Manager)|
|Supported platforms||IA-32, x86-64, lpia, ARM|
|Kernel type||Monolithic (Linux kernel)|
|Default user interface||KDE Plasma Desktop|
|License||Various, primarily the GNU GPL and GFDL|
Kubuntu (pron.: // koo-BOON-too) is an official derivative of the Ubuntu operating system which uses the KDE Plasma Desktop instead of the Unity graphical environment. As part of the Ubuntu project, Kubuntu uses the same underlying systems, every package in Kubuntu shares the same repositories as Ubuntu, and it is released regularly on the same schedule as Ubuntu. It is possible to install both the KDE Plasma Desktop (kubuntu-desktop) as well as the Unity desktop (ubuntu-desktop) on the same machine.
"Kubuntu" means "towards humanity" in Bemba, and is derived from ubuntu ("humanity"). The K at the beginning represents the KDE community on whose platform Kubuntu is built. By coincidence, Kubuntu also means "free" in Kirundi.
“Kubuntu” is a registered trademark held by Canonical.
Comparison with Ubuntu 
Ubuntu and Kubuntu differ typically in only the graphical applications and tools.
|Kernel & Core||Linux Kernel & Ubuntu Core|
|Primary Toolkit||GTK+, Nux & Qt||Qt|
|Email & PIM||Thunderbird||Kontact|
Kubuntu's Plasma Desktop is fully customizable without extra tools or configuration file editing. Originally designed to ease transition for users from other operating systems (such as Microsoft Windows) by allowing a similar desktop layout, the KDE Plasma Desktop incorporates widget-centric modularity that allows the user to incorporate function similar to all other operating systems and also create new functionality not found in other operating system desktops. Desktop effects are integrated in the standard KWin installation, and enabled by default.
Because Ubuntu and Kubuntu use the same sources, any application intended for one is installable and runnable on the other. Consequently, it is very common to see situations such as Firefox running on Kubuntu, or K3b running on Ubuntu.
I believe that the KDE community does phenomenal work, and having a community-driven distribution to showcase that work will help attract users and developers to the project. Our overall goal in the Ubuntu project is to further the adoption of free software on the desktop and the server, and we recognise that KDE is an essential part of the mix of desktop environments that allows people to find the best environment for their needs.
The Kubuntu team released the first edition, Hoary Hedgehog, on April 8, 2005.
On February 6, 2012 On April 10, 2012 Blue Systems was announced on the Kubuntu website as new sponsor. As a result both developers employed by Canonical to work on Kubuntu – Jonathan Riddell and Aurélien Gâteau – transferred to Blue Systems.Canonical employee Jonathan Riddell announced the end of Canonical’s Kubuntu sponsorship.
|Red||Release no longer supported|
|Yellow||Release still supported|
Kubuntu follows the same naming/versioning system as Ubuntu, with each release having a code name and a version number (based on the year and month of release). Canonical provides support and security updates for Kubuntu components that are shared with Ubuntu for 18 months – five years in case of LTS versions – after release. Both a desktop version and an alternative (installation) version (for both x86 and AMD64 platforms) are available. Kubuntu CDs were also available through the ShipIt service (discontinued as of April 2011).
|Version||Release date||Code name||Supported until||Notes|
|5.04||2005-04-08||Hoary Hedgehog||2006-10-31||Initial release including KDE 3.4 and a selection of the most useful KDE programs. Some of these are not in the official KDE itself, including Amarok, Kaffeine, Gwenview, and K3b. Inclusion of update-manager/upgrade-notifier; Kickstart compatibility.|
|5.10||2005-10-13||Breezy Badger||2007-04-13||KDE 3.4.3 and the Guidance configuration tools. It also comes with the Adept Package Manager, the first to make use of debtags for easier searching (replacing the Kynaptic package manager used in the previous release); System Settings, a re-organised kcontrol-like centre and KDE Bluetooth; Graphical boot process with progress bar (USplash); OEM Installer Support; Launchpad tracking; GCC 4.0.|
|6.06 LTS||2006-06-01||Dapper Drake||2009-06||Long Term Support (LTS) release; Live CD and Installer on one disc; Ubiquity installer; Adept Notifier and Simplified Installer; X Display Configuration from Guidance; Better Asian language support; Avahi networking software.|
|6.10||2006-10-26||Edgy Eft||2008-04||KDE 3.5.5. This release adds the photo management application Digikam and accessibility profiles – benefiting people with disabilities. System Settings is also redesigned, and power management, laptop button support & networking are improved. Also features automated problem reports and Upstart.|
|7.04||2007-04-19||Feisty Fawn||2008-10||KDE 3.5.6; Migration assistant; KVM; Easy codec/restricted drivers installation; System Settings restructured into General and Advanced categories; Improved Hewlett-Packard printer management; KNetworkManager included; WPA support; Topic-based help system; OEM installer update; PowerPC support officially dropped.|
|7.10||2007-10-18||Gutsy Gibbon||2009-04-18||New background art. Ships with Strigi and Dolphin by default. Qt port of GDebi graphical installer for package files. Includes Restricted Drivers Manager for the first time. New kubuntu-restricted-extras package is available for download from the repositories.|
|8.04||2008-04-24||Hardy Heron||2009-10||It has two versions: KDE 3.5 and KDE 4.0 (With community support only). This version intends to provide feature parity with GNOME-based Ubuntu. This includes a port of system-config-printer to Qt to enable printer auto-detection, easy video codec installation in Kaffeine, a simple Compiz setup tool and inclusion of Bulletproof X in KDM, and automatic grabbing and releasing of the mouse cursor when running on a VMware virtual machine.|
|8.10||2008-10-30||Intrepid Ibex||2010-04-30||KDE 4.1.2 desktop environment by default, Linux 2.6.27, Xserver 1.5, Adept Manager 3, KNetworkManager 0.7, KWin desktop effects by default, various Kubuntu tool integration.|
|9.04||2009-04-23||Jaunty Jackalope||2010-10||KDE 4.2.2 desktop environment by default, kernel 2.6.28, Xserver 1.6, Adept superseded by KPackageKit, implementation of the ext4 filesystem, faster boot time., Community Supported PowerPC images added |
|9.10||2009-10-29||Karmic Koala||2011-04-28||KDE 4.3.2 desktop environment by default, GRUB 2, init system moved to Upstart, kernel 2.6.31|
|10.04 LTS||2010-04-29||Lucid Lynx||2013-05-09||Long Term Support (LTS) release. Security updates will be available for three years for desktops and five years for servers. KDE 4.4.2 desktop environment by default, kernel 2.6.32, KPackageKit 0.5.4, Firefox KDE integration, touchpad configuration module by default.|
|10.10||2010-10-10||Maverick Meerkat||2012-04||KDE Software Compilation 4.5. Faster login. Default browser changed to Rekonq. New bluetooth stack. Pulseaudio inclusion. Updated Kpackagekit with categories. Global menu for netbook. Updated Installer. Combining of the Desktop and Netbook Editions (autodetection).|
|11.04||2011-04-28||Natty Narwhal||2012-10-28||KDE SC 4.6, kernel 2.6.38, GStreamer multimedia backend for Phonon, GTK Oxygen theme, games in the default install, UDisks and UPower replace HAL.|
|11.10||2011-10-13||Oneiric Ocelot||2013-05-09||KDE SC 4.7, kernel 3.0.3, replacing kpackagekit with Muon Software Centre, kubuntu low fat setting, OpenGL ES Powered Desktop Effects, Kdepim 4.7.2|
|12.04 LTS||2012-04-26||Precise Pangolin||2017-04||The third Kubuntu LTS release. KDE SC 4.8, kernel 3.2.0.|
|13.04||2013-04-25||Raring Ringtail||2014-01||KDE SC 4.10, Muon Suite 2, LibreOffice 4, Optional Homerun launcher, out-of-the-box MTP support|
System requirements 
The desktop version of Kubuntu currently supports the Intel x86 and the AMD64 architectures. Some releases support other architectures: SPARC, PowerPC, IA-64 (Itanium), and PlayStation 3 (however, a firmware update from Sony in April 2010 disabled OtherOS, making the PS3 unable to run other operating systems). Because Kubuntu is Ubuntu with a KDE desktop, any version available in Ubuntu is also available for Kubuntu.
The minimum system requirements for a desktop installation are a 300 MHz x86 processor, 512 MB of RAM, 5 GB of hard drive space, and a video card which supports VGA at 640x480 resolution. The recommended system requirements for the desktop installation are a 1 GHz or better x86 processor, 1 GB of RAM, 15 GB of hard drive space, and a video card which supports VGA at 1024×768 resolution, and optionally supporting visual effects.
|Desktop & laptop|
|Processor||1 GHz (x86)||Better than 1 GHz (x86)|
|Memory||384 MB||1 GB|
|Hard drive capacity||4 GB||10 GB|
|Video card||VGA @ 640x480||VGA @ 1024x768|
- "Is Kubuntu a fork?". Archived from the original on 2008-03-07.
- Kubuntu Wiki
- Garling, Caleb (2012-04-11). "Kubuntu Linux Gets New Sugar Daddy". Wired.
- "Meaning of Kubuntu". Archived from the original on 2008-03-07.
- UK registered trademark #E4541661 "KUBUNTU", filed 2005–07–08.
- "Ubuntu – Desktop for Business". Retrieved 2012-05-26.
- "5.04 Release Notes". 2005-04-08. Retrieved 2007-04-14.
- "Ubuntu 5.10 announcement". Retrieved 2006-10-11.
- "Ubuntu 5.10 release notes". Retrieved 2006-12-21.
- "Ubuntu 6.06 LTS announcement". Retrieved 2006-12-21.
- "Ubuntu 6.06 LTS release notes". Retrieved 2006-12-21.
- "Ubuntu 6.10 announcement". Retrieved 2006-10-26.
- "Ubuntu 6.10 release notes". Retrieved 2006-12-21.
- "Kubuntu 6.10 release announcement". Retrieved 2007-03-30.
- "Ubuntu 7.04 announcement". Retrieved 2007-02-06.
- "GutsyReleaseSchedule – Ubuntu Wiki". Retrieved 2007-04-12.
- "Introducing the Gutsy Gibbon". 2007-04-12. Retrieved 2007-05-06.
- "Kubuntu 7.10 Release Notes". Retrieved 2007-11-01.
- "HardyReleaseSchedule". Retrieved 2007-12-01.
- Because of the switch from KDE 3 to KDE 4 Kubuntu Hardy is not a long term support (LTS) release, unlike Ubuntu Hardy: .
- Kubuntu Hardy Catchup – Ubuntu Wiki
- Back from Release Event, Printer Magic, Compiz Settings
- "Next Ubuntu release to be called Intrepid Ibex, due in October". Retrieved 2008-02-20.
- "Ubuntu 8.10 reaches end-of-life on April 30, 2010"
- "JauntyJackalope/Alpha5/Kubuntu Introduction". Retrieved 2009-03-11.
- Kubuntu 9.04 Release Announcement
- "Kubuntu 8.04 Releases". Retrieved 2009-03-11.
- "Technical Board Decision – February 2007". Retrieved 2008-06-13.
- "Kubuntu 8.04 Releases". Retrieved 2009-03-11.
- "Ubuntu System Requirements". Retrieved 2010-09-30.
- "Ubuntu Desktop Edition". Retrieved 2008-06-13.
- "The French Parliament switches to Kubuntu"[dead link]
- "French parliament dumping Windows for Linux"[dead link]
- "Kubuntu in the Canary Islands"
- "Kubuntu Takes Over the Canary Islands"
|Wikimedia Commons has media related to: Kubuntu|
- Official website
- Kubuntuguide – Help manual (unofficial), tips, FAQ, and software guide
- Kubuntu at DistroWatch