KDE (K Desktop Environment) is a Qt-based desktop environment as well as a suite of cross-platform desktop applications. Its latest desktop environment is KDE Plasma 5.

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46
votes
8answers
43k views

How to turn off baloo in KDE 4.13?

I have Kubuntu 14.04 and just installed the newest updates. Looking at the process list I see baloo indexer running. I could not find a checkbox in Baloo settings to turn off the indexing.
34
votes
5answers
18k views

What is a activity in KDE and what can I do with it?

In the top right corner of a standard KDE/Kubuntu installation you'll see this: But seriously, I seem to be unable to understand what those "activities" are and what it would enable me to profit ...
33
votes
5answers
1k views

How to safely try KDE?

There's a way to safely try KDE on top of an Ubuntu installation, keeping the possibility to revert the changes in case I dislike how it runs?
26
votes
7answers
26k views

How do I install KDE?

I want to have both KDE and Gnome shells on Ubuntu. Ubuntu only has Gnome installed by default. How do I install KDE?
25
votes
5answers
88k views

How To Install And Test KDE Plasma 5 On Ubuntu 14.04

KDE Plasma 5 is hitting release candidate now: Schedules/Plasma 5 - KDE TechBase. How can I install plasma 5 in Ubuntu 14.04.
23
votes
4answers
49k views

How to remove all traces of KDE installed

I have 2 computers with Ubuntu but on both I installed KDE to have another option for the users. Since Unity has come along very well, there has not been a need to use KDE for a while now. How can I ...
21
votes
2answers
65k views

How to install KDE along Unity?

I have just installed the latest Ubuntu 14.04 and I would like to install KDE along side my Gnome/Unity that I have now. How can I do this? Thanks!
18
votes
2answers
13k views

How do I control window placement in KDE with keyboard?

Is it possible in KDE to set up keyboard shortcuts similar to what Unity uses for window placement - i.e. Alt - Ctrl - Numpad 6 to make a window occupy the left half of the screen etc.?
18
votes
3answers
141k views

Installing KDE in Ubuntu 12.04

Is it better to use Kubuntu or Ubuntu with KDE? For example, if I were to install KDE in Ubuntu will there be any instability or conflict? Will these two get mixed up with themes and icons? I have ...
17
votes
3answers
1k views

How to add a keyboard modifier state applet to Unity panel?

I am a KDE user thinking about moving to Unity. Due to manual disability, I use sticky keys and in KDE I have an applet in the system panel which shows which modifier keys are active. I remember that ...
16
votes
3answers
36k views

Make KDM the default display manager

I'm giving KDE another try - so far so good. I installed everything using apt-get install kubuntu-desktop. During the installation it asked me which login manager to use and I chose LightDM - however, ...
15
votes
5answers
37k views

Can I restart the KDE Plasma Desktop without logging out?

I'm just talking about the standard KDE desktop. After a while (many days) of running the task bar stops working properly. This is due to some sort of undiagnosed bug but that's really not my boggle ...
15
votes
7answers
23k views

How to Install Okular 0.15 on 12.04 LTS?

See here for reference: http://okular.kde.org/news.php The new version includes an option to save annotations to the PDF file itself. That's why I am very eager to try out. Is there any PPA from ...
15
votes
2answers
28k views

How do I know my KDE version?

I'm on Kubuntu 11.04 and I want to know what KDE version I'm using.
15
votes
3answers
13k views

How can I safely shutdown/reboot/logout KDE from the command line?

I am not talking about shutdown and reboot commands. I want to initiate the same routine from command line that would be performed if I would press the logout/reboot/shutdown button inside the KDE ...
15
votes
8answers
29k views

Have tearing (no Vsync) in movies (Nvidia proprietary driver)

This is more of KDE than Ubuntu question, but... I have visible tearing on screen. KDE composition, flash video in Firefox, and simple games like kpat are vsynced, but in steam games and in movies ...
14
votes
1answer
9k views

Is it possible to use multiple desktop environments on same system?

I am using Ubuntu 12.04. I want to try out KDE and other desktop environments. But I'm not sure if I'll like them enough to switch permanently. I want to be safe and make a transition in a piecemeal ...
14
votes
3answers
12k views

Open new windows on main screen in KDE two-screen setup

I am using KDE (with Kwin) on two screens. Often when I run a new application the new window shows on the second screen eventhough the mouse as well as the active window is on the main screen. How can ...
14
votes
1answer
13k views

How do I install/upgrade to KDE 4.9?

Recently kde released kde 4.9, I wanna test it from my ubuntu 12.04 . How to to install kde 4.9 in ubuntu? Is there any ppa available
13
votes
0answers
3k views

Uninstall kubuntu-desktop [duplicate]

I installed kubuntu-desktop using sudo apt-get install kubuntu-desktop but I no longer want to use KDE. How do I remove all the packages that were installed by this command ? Thank you
12
votes
1answer
12k views

What is the screen locking mechanism under KDE?

I installed KDE desktop on my Ubuntu: root@DESKTOP:/var/log# dpkg -l|fgrep -i kde-plasma-desktop ii kde-plasma-desktop 5:63ubuntu16 the KDE Plasma ...
12
votes
1answer
11k views

how to remove title bar and borders on maximized windows in kubuntu?

In gnome-shell there is an extension that removes the window borders and close buttons and title bar etc on maximized windows to save screen real estate. I'm sure kwin / kde has a way to mimic this ...
12
votes
4answers
2k views

How do I go back to KDE splash / login after installing XFCE?

I started with Ubuntu Karmic, and wanted to try KDE. So I installed kubuntu-desktop. Then I wanted to see how XFCE progressed, so I installed xfce4. I now have Kubuntu with an XFCE splash and login. ...
12
votes
2answers
898 views

KDE Sometimes Glitches On Wakeup

Well, a picture is work 1k words: Looks bad, huh? I am using the 331-updates latest 331.67 drivers from NVidia's website on a Dell Latitude e6400. Everything else is up-to-date. This only happens ...
11
votes
4answers
15k views

How do I remove the KDE 4 Plasma Tool Box/cashew icon from the desktop?

I'm looking to remove the "Tool Box" icon in the upper right hand corner of my KDE 4 desktop, but can't find any configuration setting anywhere to do so. I'm new to KDE 4, so it's quite possible I ...
11
votes
4answers
2k views

How to make program autostart only in GNOME

I use both GNOME and KDE SC. In GNOME, I use Docky but I do not use it with KDE. So, I would like Docky to start up only when I login into GNOME not KDE. In KDE, there is an option to make a program ...
11
votes
4answers
9k views

How to turn off screen (DPMS) together with locking session in KDE?

First of all, I'm aware a similar question for GNOME is asked here: "Switch off laptop backlight when locking screen". Objective I would like to turn off my screen on locking the session for power ...
11
votes
1answer
1k views

Is there a good mono-spaced font for Devanagari script in the Terminal?

All the terminal fonts I have tried result in inaccurate rendering of the Devanagari sript (and/or Roman script) in the Terminal In the Devanagari script, a vowel binds itself to a preceding ...
11
votes
2answers
750 views

Why doesn't GNOME respect OnlyShowIn=KDE; in .desktop files?

I have both KDE and GNOME desktop environments installed on Ubuntu 10.10. When I add the entry OnlyShowIn=GNOME; in a .desktop file, the application doesn't appear in the KDE menu. However, when I ...
11
votes
1answer
1k views

How to disable KDE's brightness OSD?

I am using lightum to automatically control the screen's brightness depending on the surrounding light (on a Retina MacBook Pro). The problem is, though, that KDE picks up the change and displays the ...
11
votes
2answers
1k views

How to change strange kde scrollbars?

From a fresh Ubuntu 12.04 install I tried multiple desktops, and settled on KDE. One problem I have with it is how scrollbars are displayed in Thunderbird: In Gimp, Dolphin, Firefox there are ...
10
votes
1answer
4k views

How do I stop the screen from being locked on resume on Kubuntu/KDE?

Per How do I stop the screen from being locked on suspend? I want to be able to sleep and resume without the screen locking. All the previous answers seem to involve fairly Gnome-specific things that ...
10
votes
3answers
2k views

Clicking links in pdfs opened with Okular opens Abiword (instead of the default browser)

I work with Xubuntu 12.04 and use Okular (version 0.14.3) to view pdf files. If I click a web link in a pdf file (created with "pdflatex" using the "hyperref" package), "Abiword" (It's a ...
10
votes
7answers
14k views

GTK+ in Kubuntu apps look bad

I have installed Evolution email client on Kubuntu 11.10 and it's not so cute as expected. Eclipse also looks bad. I have the GTK+ Appearance plugin in KDE System Settings and already tried QTCurve ...
10
votes
4answers
5k views

Restore GTK integration after removing KDE

I was trying KDE (kubuntu-desktop) on top of an Ubuntu Unity install. Now I have uninstalled KDE. However, I see that any non-GTK based application still showing the KDE theme. For example, below is ...
10
votes
1answer
21k views

Kubuntu 14.04 - No Screen resolution changer?

I just installed a fresh new kubuntu 14.04 on an intel nuc and everything works fine, but I can't find an option to change the screen resolution. When I go to Settings -> Display I get the following ...
10
votes
2answers
5k views

Ugly font after KDE installation

You all know the nice default font that come with Ubuntu, right? I just wanted to play a little bit with Kubuntu and installed the meta package kubuntu-desktop Everything was fine, however the ...
10
votes
2answers
2k views

How do I make the login screens and boot splashes match when installing different desktops?

I wanted to try out different desktop environments so I installed XFCE, KDE, GNOME, etc on top of Unity in Ubuntu 12.04 After a while I decided that I didn't like those other DEs and would stick to ...
10
votes
5answers
993 views

How to make multiple DEs less messy? Specifically KDE on Ubuntu

On one of my laptops, I installed all of the popular DEs because I like to experiment with them. I have Unity, GNOME Shell, KDE, and xfce all installed. It seems that KDE and GNOME don't "get ...
9
votes
4answers
9k views

Okular can't read pdf files

I recently have installed Okular on my Ubuntu 14.04. The problem is when I open pdf files, okular gives me the error "Can not find a plugin which is able to handle the document being passed." When I ...
9
votes
1answer
8k views

Kubuntu and KDE clock

I have some very strange behavior of the KDE clock in latest Kubuntu with KDE 4.10 backports. System clock is correctly set, although for some reason it uses UTC. This is correct: me@pinguino ~]$ ...
9
votes
5answers
844 views

Broken fonts in KDE (Kubuntu 14.10)

From time to time I experience a very strange bug: Fonts are broken not only in Firefox, but in the whole KDE environment. What can I do to fix it? UPDATE #1 Installed Kubuntu from scratch and ...
8
votes
2answers
12k views

How to return the login screen to the default

I've been experimenting with various Desktop Environments, including LXDE, XFCE, KDE. I'm returning to Unity, and I would like my login screen back to the default for 12.04. I think that it changed ...
8
votes
1answer
3k views

How to restart alt+f2 dialog in kde after xkill?

The dialog that appears when I press Alt+F2 froze (what is it called? minicli?), I then proceeded to kill it by clicking it after running the command xkill, this was the message: xkill: killing ...
8
votes
1answer
3k views

How to fix choppy fonts after using KDE System Settings?

I used KDE System Settings to configure my KDE appearance settings (I wanted to make KolourPaint look native), even though I use GNOME. I changed some font settings through it, and now all of my fonts ...
8
votes
1answer
4k views

What is the equivalent of gksudo in Kubuntu/KDE?

In regular Ubuntu (Unity/Gnome), I use gksudo to run GUI programs with root privileges. I'm trying out Kubuntu (or KDE) now -- what do I use?
8
votes
3answers
6k views

Ubuntu 13.10 suspend crashes KDE / black screen on wake

Setup I have a fresh install of Ubuntu 13.10, with KDE (installed via Ubuntu server disk and sudo apt-get install kubuntu-desktop). Problem Whenever I suspend the computer while in KDE (either via ...
8
votes
3answers
1k views

Clean removal of KDE 4

I recently installed KDE in to my Ubuntu 10.04 machine using apt. (i.e apt-get install kde-desktop) After a while I got enough with the testing and wanted to have gnome again. So I removed all the ...
8
votes
3answers
5k views

How to run Java application in KDE with Qt-like UI?

Continuing my question in Install Ubuntu or Kubuntu? I have tried Kubuntu (KDE), and it was very cool as cool as Ubuntu (GNOME). but there is little problem with its user interface when we start Java ...
8
votes
1answer
272 views

Expand window to free space on screen in KDE

I am using Kubuntu, and I want to expand the current window to the free space on the screen. To say it more precisely: I want to make the current window as big as possible without overlapping new ...