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Kubuntu /kuːˈbuːntuː/ koo-BOON-too is an official flavour 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,2 and it is released regularly on the same schedule as Ubuntu3

Kubuntu was sponsored by Canonical Ltd until 2012, and then directly by Blue Systems Now employees of Blue Systems contribute upstream, to KDE and Debian, and Kubuntu development is led by community contributors During the changeover, Kubuntu retained the use of Ubuntu project servers and existing developers4


  • 1 Name
  • 2 Comparison with Ubuntu
  • 3 Gallery
  • 4 History
  • 5 Releases
  • 6 System requirements
  • 7 Deployments
  • 8 See also
  • 9 Notes
  • 10 External links


"Kubuntu" is a registered trademark held by Canonical5 It is derived from the name Ubuntu, prefixing a K to represent the KDE platform Kubuntu is built upon following a widespread naming convention of prefixing K to the name of any software released for use on KDE platforms, as well as the KDE community

Since ubuntu is a Bantu term translating roughly to "humanity", and since Bantu grammar involves prefixes to form noun classes, it turns out that the prefix ku- having the meaning "toward" in Bemba, kubuntu is also a meaningful Bemba word or phrase translating to "toward humanity" Reportedly, the same word by coincidence also takes the meaning of "free" without payment in Kirundi6

Comparison with Ubuntuedit

Kubuntu typically only differs from Ubuntu in graphical applications and tools:

Software Ubuntu Kubuntu
Kernel and core Linux kernel and Ubuntu core
Graphics XOrg Server
Sound PulseAudio
Multimedia GStreamer
Desktop Unity Plasma Desktop
Primary toolkit GTK+, Nux, and Qt Qt
Browser Firefox
Office suite LibreOffice
Email and 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



The birth date of Kubuntu was the 10th December 2004 at the Ubuntu Mataro Conference in Mataró, Spain7 Canonical employee Andreas Mueller, from Gnoppix, had the idea to make a Ubuntu KDE deviate and got the allowance from Mark Shuttleworth to start the first Ubuntu deviate, called Kubuntu On the same evening Chris Halls from the Openoffice project and Jonathan Riddell from KDE started volunteering to the newborn Project

Mark Shuttleworth, in an interview shortly after Ubuntu which now uses the Unity desktop environment, previously having used GNOME was started, stated:8

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 2005-04-08

K Desktop Environment 3 was used as default interface until Kubuntu 804 That version included KDE Plasma Desktop as unsupported option which became default in the subsequent release, 8109

On February 6, 2012 2012-02-06, Canonical employee Jonathan Riddell announced the end of Canonical's Kubuntu sponsorship10 On April 10, 2012 2012-04-10, Blue Systems was announced on the Kubuntu website as new sponsor1 As a result, both developers employed by Canonical to work on Kubuntu – Jonathan Riddell and Aurélien Gâteau – transferred to Blue Systems11


Colour Meaning
Red Release no longer supported
Yellow Release still supported
Green Current release
Blue Future release

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 long-term support LTS versions – after release12 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 201113

Version Release date Code name Supported until Notes
504 2005-04-0814 Hoary Hedgehog 2006-10-31 Initial release including KDE 34 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
510 2005-10-131516 Breezy Badger 2007-04-13 KDE 343 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 40
606 LTS 2006-06-011718 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
610 2006-10-261920 Edgy Eft 2008-04 KDE 355 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 Upstart21
704 2007-04-1922 Feisty Fawn 2008-10 KDE 356; 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
710 2007-10-182324 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 time25 New kubuntu-restricted-extras package is available for download from the repositories
804  2008-04-2426 Hardy Heron 2009-10 It has two versions: KDE 35 and KDE 40 With community support only This version intends to provide feature parity with GNOME-based Ubuntu27 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,2829 and automatic grabbing and releasing of the mouse cursor when running on a VMware virtual machine Ubuntu 804 is a long term support release but Kubuntu 804 is not
810 2008-10-30 Intrepid Ibex30 2010-04-3031 KDE 412 desktop environment by default, Linux 2627, Xserver 15, Adept Manager 3, KNetworkManager 07, KWin desktop effects by default, various Kubuntu tool integration
904 2009-04-23 Jaunty Jackalope 2010-10 KDE 422 desktop environment by default, kernel 2628, Xserver 16, Adept superseded by KPackageKit,32 implementation of the ext4 filesystem, faster boot time,33 Community Supported PowerPC images added34
910 2009-10-29 Karmic Koala 2011-04-28 KDE 432 desktop environment by default, GRUB 2, init system moved to Upstart, kernel 2631
1004 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 442 desktop environment by default, kernel 2632, KPackageKit 054, Firefox KDE integration, touchpad configuration module by default
1010 2010-10-10 Maverick Meerkat 2012-04 KDE Software Compilation 45 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
1104 2011-04-28 Natty Narwhal 2012-10-28 KDE SC 46, kernel 2638, GStreamer multimedia backend for Phonon, GTK Oxygen theme, games in the default install, UDisks and UPower replace HAL
1110 2011-10-13 Oneiric Ocelot 2013-05-09 KDE SC 47, kernel 303, replacing kpackagekit with Muon Software Centre, kubuntu low fat setting, OpenGL ES Powered Desktop Effects, Kdepim 4723536
1204 LTS 2012-04-26 Precise Pangolin 2017-04 The third Kubuntu LTS release KDE SC 48, kernel 320
1210 2012-10-18 Quantal Quetzal 2014-04 LibreOffice 3622, Rekonq 11, KDE SC 492
1304 2013-04-25 Raring Ringtail 2014-0137 KDE SC 410, Muon Suite 2, LibreOffice 4, Optional Homerun launcher, out-of-the-box MTP support
1310 2013-10-17 Saucy Salamander 2014-06 KDE SC 4112, LibreOffice 412 rc3
1404 LTS 2014-04-17 Trusty Tahr 2019-04 KDE SC 4130, LibreOffice 4233, Default Browser changed back to Firefox
1410 2014-10-23 Utopic Unicorn 2015-06 KDE SC 414, KDE Plasma 5 as technical preview
1504 2015-04-23 Vivid Vervet 2015-12 KDE Plasma 522 is now the default desktop environment Adaptation to systemd and to SDDM Behind-the-scenes work on the change to Wayland
1510 2015-10-22 Wily Werewolf 2016-06 KDE Plasma 541, Firefox 410, LibreOffice 50
1604 LTS 2016-04-21 Xenial Xerus 2019-0438 KDE Plasma 55, Firefox 45, LibreOffice 51
1610 2016-10-13 Yakkety Yak 2017-0639 KDE Plasma 575, KDE Applications 16043, KDE Frameworks 5260, LibreOffice 52, Firefox 49, Linux Kernel 48

System requirementsedit

The desktop version of Kubuntu currently supports the Intel x86 and the AMD64 architectures Some releases support other architectures including: SPARC,40 PowerPC,4142 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

The minimum system requirements for a desktop installation are a 700 MHz x86 processor, 512 MB of RAM, 5 GB of hard drive space,43 and a video card which supports VGA at 640×480 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,44 and a video card which supports VGA at 1024×768 resolution, and optionally supporting visual effects

Desktop & Laptop45not in citation given
Required Recommended
Processor 1 GHz x86 Better than 1 GHz x86
Memory 512 MB 1 GB
Hard drive capacity 4 GB44 10 GB44
Video card VGA @ 640×480 VGA @ 1024×768

If "Desktop effects" are desired, a supported GPU is required


Kubuntu rollouts include the world's largest Linux desktop deployment, that includes more than 500,000 desktops in Brazil in 42,000 schools of 4,000 cities46474849

The software of the 14,800 Linux workspaces of Munich was switched to Kubuntu LTS 1204 and KDE 4115051

The Taipei City Government decided to replace Windows with a Kubuntu distribution on 10,000 PCs for schools5253

The French Parliament announced in 2006 that they would switch over 1,000 workstations to Kubuntu by June 20075455

A Kubuntu distribution, by La Laguna University, is used in more than 3,000 computers spread in several computer labs, laboratories and libraries, among other internal projects in the Canary Islands56 Since October 2007, Kubuntu is now used in all of the 1,100 state-run schools in the Canary Islands5758

See alsoedit

  • Free software portal
  • Linux portal
  • Lubuntu


  1. ^ a b "to be Sponsored by Blue Systems" Kubuntu 2012-04-10 Retrieved 2013-09-23 
  2. ^ "Is Kubuntu a fork" Archived from the original on 2008-03-07 
  3. ^ "Kubuntu Wiki" Wikikubuntuorg 2013-03-10 Retrieved 2013-09-23 
  4. ^ Garling, Caleb 2012-04-11 "Kubuntu Linux Gets New Sugar Daddy" Wired 
  5. ^ UK registered trademark #E4541661 "KUBUNTU", filed 2005-07-08
  6. ^ "Meaning of Kubuntu" Archived from the original on 2008-03-07 
  7. ^ "Kubuntu Birthdate" Ubuntu Retrieved 2004-12-10 
  8. ^ "Mark Shuttleworth on the future of Kubuntu" Lwnnet 2006-04-26 Retrieved 2013-09-23 
  9. ^ "810 Refreshes the Desktop" Kubuntu 2008-10-30 Retrieved 2013-09-23 
  10. ^ "Kubuntu Status" Listsubuntucom Retrieved 2013-09-23 
  11. ^ "Into the blue | Aurélien's Room" Agateaucom 2012-04-11 Retrieved 2013-09-23 
  12. ^ "Ubuntu – Desktop for Business" Retrieved 2012-05-26 
  13. ^ "ShipIt Kubuntu" Archived from the original on 2010-12-12 
  14. ^ "504 Release Notes" 2005-04-08 Retrieved 2007-04-14 
  15. ^ "Ubuntu 510 announcement" Retrieved 2006-10-11 
  16. ^ "Ubuntu 510 release notes" Retrieved 2006-12-21 
  17. ^ "Ubuntu 606 LTS announcement" Retrieved 2006-12-21 
  18. ^ "Ubuntu 606 LTS release notes" Retrieved 2006-12-21 
  19. ^ "Ubuntu 610 announcement" Retrieved 2006-10-26 
  20. ^ "Ubuntu 610 release notes" Retrieved 2006-12-21 
  21. ^ "Kubuntu 610 release announcement" Retrieved 2007-03-30 
  22. ^ "Ubuntu 704 announcement" Retrieved 2007-02-06 
  23. ^ "GutsyReleaseSchedule – Ubuntu Wiki" Retrieved 2007-04-12 
  24. ^ "Introducing the Gutsy Gibbon" 2007-04-12 Retrieved 2007-05-06 
  25. ^ "Kubuntu 710 Release Notes" Retrieved 2007-11-01 
  26. ^ "HardyReleaseSchedule" Retrieved 2007-12-01 
  27. ^ "Kubuntu Hardy Catchup – Ubuntu Wiki" Wikikubuntuorg 2008-08-06 Retrieved 2013-09-23 
  28. ^ "Back from Release Event, Printer Magic, Compiz Settings" Kdedevelopersorg 2008-01-24 Retrieved 2013-09-23 
  29. ^ "UDS" Kdedevelopersorg 2007-11-08 Retrieved 2013-09-23 
  30. ^ "Next Ubuntu release to be called Intrepid Ibex, due in October" Retrieved 2008-02-20 
  31. ^ "Ubuntu 810 reaches end-of-life on April 30, 2010" Listsubuntucom 2010-04-30 Retrieved 2013-09-23 
  32. ^ "Farewell, Adept mornfall's web" Archived from the original on 2012-05-10 
  33. ^ "JauntyJackalope/Alpha5/Kubuntu Introduction" Retrieved 2009-03-11 
  34. ^ "Kubuntu 904 Release Announcement" Kubuntuorg 2009-04-23 Retrieved 2013-09-23 
  35. ^ "Kubuntu 1110 Sneak Peak | Apachelogger's Log" Apachelogwordpresscom 2011-05-17 Retrieved 2013-09-23 
  36. ^ "OneiricOcelot/ReleaseNotes - Ubuntu Wiki" Wikikubuntuorg Retrieved 2013-09-23 
  37. ^ Sneddon, Joey-Elijah 2013-03-20 "Ubuntu To Halve Support Window for 'Regular' Releases" OMG! Ubuntu! Retrieved 2013-09-23 
  38. ^ "Kubuntu XenialXerus ReleaseNotes, Support Lifespan" wikiubuntucom 2016-04-27 Retrieved 2016-05-09 
  39. ^ "Kubuntu YakketyYak ReleaseNotes, Support Lifespan" wikiubuntucom 2016-10-14 Retrieved 2016-10-14 
  40. ^ "Kubuntu 804 Releases" Retrieved 2009-03-11 
  41. ^ "Technical Board Decision – February 2007" Retrieved 2008-06-13 
  42. ^ "Kubuntu 804 Releases" Retrieved 2009-03-11 
  43. ^ "Ubuntu System Requirements" Retrieved 2014-09-03 
  44. ^ a b c "Ubuntu Desktop Edition" Retrieved 2008-06-13 
  45. ^ "Ubuntu System Requirements" Retrieved 2008-09-30 
  46. ^ "The Worlds Largest Linux Desktop Deployment: 500,000 Seats and Counting" Linux Foundation 2013-04-02 Archived from the original on 2013-04-02 Retrieved 2013-09-23 
  47. ^ "The world's largest Linux desktop deployment" Lwnnet Retrieved 2013-09-23 
  48. ^ "Kubuntu to be Sponsored by Blue Systems" Kubuntuorg 2012-04-10 Retrieved 2013-09-23 
  49. ^ "42,000 schools running Kubuntu derivative" Blogskdeorg 2011-09-16 Retrieved 2013-09-23 
  50. ^ "Official Munich IT blog: Debian + Kubuntu Bug Squashing Party 2013" 
  51. ^ "Jonathan Riddell blog: Debian + Kubuntu Bug Squashing Party 2013" 
  52. ^ "Taipei replaces Windows with Linux on 10,000 school PCs" 
  53. ^ "ezgo - Free And Open Source Software In Taiwan's Schools" 
  54. ^ "The French Parliament switches to Kubuntu" Archived from the original on 2010-01-22 
  55. ^ "French parliament dumping Windows for Linux" Archived from the original on 2010-02-28 
  56. ^ "Virtue of Necessity" 
  57. ^ "Kubuntu in the Canary Islands" 
  58. ^ "Kubuntu Takes Over the Canary Islands" 

External linksedit

  • Official website
  • Kubuntu at DistroWatch
  • Kubuntuguide – Help manual unofficial, tips, FAQ, and software guide

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