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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I can't download new Plasma widgets and Plasma themes in Kubuntu 16.04 LTS

Each time I try to download the new Plasma widget from the Plasma Add-On Installer, I get the following error: Loading of providers from file: http://download.kde.org/ocs/providers.xml failed ...
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1answer
36 views

How to fix the problem of drop-down menus being transparent and not readable in Kubuntu 15.10

The Problem: The task manager dropdown menus are all transparent and not readable at all. The same goes for all the dropdown menus of libre office. I have tried to change the desktop theme but the ...
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2answers
138 views

How to deactivate all the desktop effects of KDE permanently?

I am aware that the shortcode of "Shift + Alt + F12" disables all the desktop effects of Kubuntu 15.10. However, is there a way to disable all those effects automatically and permanently in every ...
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1answer
25 views

Power management dies after suspend in Kubuntu 15.10

Ever since I upgraded to Kubuntu 15.10 from 14.10 power management dies after waking up from suspend (to disk or ram). The only thing that still works is dim display but it won't even un-dim. Screen ...
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6 views

Graphical effect disappeared on kde4

Afternoon I had to reinstall xorg for some problems with the nvidia driver. Now all the effects are enabled (for example flickering windows) but do not work. and now all without as animations .. do I ...
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1answer
15 views

Accidentally killed plasma

I accidentally pressed ctrl + alt + esc, clicking on the process in the task manager, but it didnt work, and it selected the whole plasma desktop and got killed, is there a quick fix to start up ...
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24 views

KDE + VNC under Amazon EC2?

Starting with a 14.04LTS AMI, what are the magic incantations to get a remote desktop, preferably KDE? I tried the obvious: apt-get install kubuntu-desktop apt-get install tightvncserver ...
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2answers
83 views

KDE 5 - How to easily switch between audio outputs?

I currently have KDE 5 Plasma installed which I like a lot. However, it is not possible to easily switch between Audio outputs from One Soundcard (SPDIF and analog) like it was possible in Unity. Is ...
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23 views

Audio mute button not working in KDE Plasma 5 Kubuntu 15.10

How do I get the audio mute button on my keyboard to work on Kubuntu 15.10? I read somewhere that changing global shortcuts for KMix in Global shortcut settings would work, but I couldn't find KMix in ...
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22 views

Akonadi/ Kmail is broken cannot get my POP3 messages/ accounts

Today kmail stopped working and I get the following while running akonadictl start: Starting Akonadi Server... Unable to register service as "org.freedesktop.Akonadi.Control.lock" Maybe it's already ...
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1answer
73 views

Screen Goes Blank After Boot

Once I start my computer Ubuntu starts to boot by showing the splash screen. Then once the splash screen goes away the login screen appears, but then quickly goes blank. I uploaded a YouTube video ...
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21 views

Firefox opens downloaded files with default app for Gnome instead of KDE which I am running

I am running Kubuntu 15.10 with KDE Plasma5. While I am running Firefox and open a file downloaded from there, it opens using the default application set in Gnome and not the ones configured for ...
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1answer
74 views

Help understanding and debugging slow boot with systemd network-online.target

I've spent some time on google, but I don't want a quick fix here, I want to understand what is going on. I have a desktop which boots to Windows in 3 seconds, and booted older ubuntu's in under 10, ...
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26 views

Change font size of all BasKet notes at once

I would like to know how to change the font size of ALL BasKet notes at once. Selecting all notes in one basket makes the font toolbar grayed out, so this does not work.
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1answer
82 views

Installing Unity alongside kde

I am running kubuntu 15.10 32-bit for a while, and although I love the kde enviroment, I would like the option of having unity. So, I did the following: sudo apt-get update sudo apt-get ...
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1answer
65 views

KDE login/logout issues in Kubuntu 15.10

I'm running a fresh Kubuntu installation on a new computer. Everything runs smooth except logging in and out of KDE. The problem could be divided into two parts: About 40% of the time, KDE won't ...
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11 views

KDE Login screen for 2 monitor

I'm wondering if is possible to remove one of the login screens under Kubuntu 15.10, I'm working with kubuntu and 2 monitors, and each time when I start my PC both monitor are showing the login window ...
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1answer
27 views

A shortcut to present all windows and jump to one of them with a key

Is there a feature that present the "present all windows" screen or something similar and puts letters on the windows like 'alt' does for menu so you can jump to the desired window with just the ...
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122 views

KDE Plasma can't install. Help me

When try to install KDE Plasma (Kubuntu Desktop) on Ubuntu 15.10 using sudo apt-get install kubuntu-desktop Then this error comming, Reading package lists... Done Building dependency tree ...
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1answer
22 views

Backup of Akonadi: What makes sense?

At https://wiki.ubuntuusers.de/Datensicherung/#4-was-zu-sichern-sich-nicht-lohnt (in German unfortunately) it says that it does not pay off to backup ~/.local/share/akonadi. Why is that? What should I ...
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1answer
45 views

Black screen with movable mouse in Kubuntu 15.10 KDE - How do i fix it?

I accidentally moved my unstable power coord connected to my monitor (It gets disconnected easily) and couldnt get the power coord to fit in rightly, so i had to force restart my computer (cause i ...
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1answer
32 views

How to deal with forgotten password without loosing any data from ubuntu based laptop? [duplicate]

When I logged in today on my laptop and tried to do something it asked me for my password. So i typed in my password and it keeps on saying that It's invalid. I know for sure I didn't change it. Is ...
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12 views

KDE Window Preview font breaks after a while

I am running Kubuntu 15.10 with KDE 5.4.2 and after running for some time, the font in the little preview window that appears when hovering the mouse over the taskbar starts to break with certain ...
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133 views

How do I get firefox do use the numix theme again?

I normally use Ubuntu 15.10 with the numix theme, the typical black style with red menus along with circle icons. I recently tried kde plasma(because for whatever reason it was installed on my ...
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92 views

Help Getting KDE to work

Basically I've used many flavors of Linux over the years, I just got a System 76 with the default Ubuntu installed on it. I've been a fan of KDE and Debian for many years now, so this distro isn't ...
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1answer
57 views

KDE color scheme is not applying

I installed kubuntu-desktop and color themes are not working. When I change for example from Breeze to Breeze Dark in Color section in the settings nothing except title bar color seems to change. ...
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30 views

Can't click on anything on my Kubuntu 15.04

I have a problem with Kubuntu 15.04. I am not able to click on anything in control panel. Sometimes the whole KDE just freezes so I can't click on anything. Could someone please help to find a ...
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22 views

KWin crashes when connected on VNC

Whenever I connect to my KDE 5 desktop served by TightVNC on Kubuntu 15.10, KWin (in the viewer) crashes and I am left with a grey desktop unable to do anything. KWin crashes only on VNC. The ...
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151 views

Start KDE 5 through VNC

I am trying to setup TightVNC so that I can access my KDE Plasma 5 desktop remotely. Problem is, I don't know what to put in the ~/.vnc/xstartup file to start KDE.
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2answers
35 views

Minecraft confusion?

So I bought mine craft and I looked on you tube found how to do it and did it only there was a problem. I ran the launcher hit play and then it pops up the launcher again and says: something about ...
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64 views

Enable 256 colors in Konsole (Kubuntu)

I would like to enable 256 colors in Konsole but I didn't get it working the right way. I have set in my enviroment: TERM=xterm-256color $ tput colors 256 But the colortest of base16 always prints ...
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1answer
18 views

Kate forces itself to be the default application for HTML

In the last few days, Kate took over opening HTML links and files. I want to get it back to Firefox, so I opened System Settings, went into Applications -> File Associations, found the text/html ...
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19 views

gtk-recordmydesktop locks KDE taskbar so I can't stop recording

As far as I know the way you stop recording using gtk-recordmydesktop is to click the icon in the taskbar. My KDE 5.5.5 taskbar auto-hides, because I really don't use it all that often. If I'm ...
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43 views

kde 15.10 with nvidia propriety drivers = CRASH

I have a laptop with the nvidia gm107m/gtx960m chipset. For KDE there is no gui: plasma crashes each and every time at login. It complaints about some error when trying to use OpenGL 2. Have ...
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23 views

How to setup shortcuts to launch or switch application in kde5?

Such as in Unity, cmd+[number] would launch an application or switch to it if it is already launched? Currently I know how to setup new shortcut to launch an application in system settings. But I do ...
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204 views

how do I install new themes on Kubuntu 15.10?

I've been for ways on how to install themes on Kubuntu 15.10 but I cannot find any guide/example on how to do it. I found old discussion where it says I need to copy the theme ...
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32 views

Are there any automatic time trackers for KDE desktop activities?

I'm using KDE activities for my few tasks. And I have to track time for each of them. Is there any time tracker software for KDE which can automatically track time for different activities while I'm ...
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16 views

Unable to start programs in Kubuntu 14.04 except for Firefox

My Kubuntu 14.04 system is in a strange state. The desktop and its icons display normally, but clicking on an icon does not start the associated program -- with the one peculiar exception of Firefox. ...
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91 views

KDEInit could not launch “/usr/bin/konsole” kubuntu 15.10

I've been a *buntu user for some years but remain somewhat of a novice with code and terminal. I'm running Kubuntu 15.10 and have recently noticed the following issues after attempting to install ...
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14 views

Unable to enable KHotKeys in Kde Plasma

I have installed Kde Plasma 5.4 along with the Unity. Now I am unable to open terminal using shortcut keys. When I checked the custom settings, all my shortcuts are disabled by default. please help
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1answer
26 views

KDE5 popup notifications not shown if panel is autohidden

All popup notifications are not shown in KDE5 session.
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14 views

Okular opens with chapter unfolded

Whenever I open the document from this link in Okular and unfold Part I in the table of content, then chapter 4 is also unfolded, no matter how the TOC looked when I last closed the document. ...
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73 views

Problem in creating Hotspot in Ubuntu 14.04

I followed this tutorial to create hotspot. http://ubuntuhandbook.org/index.php/2014/06/share-internet-with-android-ubuntu-1404/ Earlier, my hotspot was working fine. I was just trying to do it using ...
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54 views

error when installing the required packages from the link https://techbase.kde.org/Projects/Edu/KStars/Building_KStars_KF5:

rahul@rahul-Latitude-E6410:~$ sudo apt-get install build-essential cmake git libeigen3-dev libcfitsio-dev zlib1g-dev libindi-dev extra-cmake-modules libkf5plotting-dev libqt5svg5-dev ...
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1answer
46 views

How to change lock screen?

I installed KDE in ubuntu 15.10, but the login screen is the one that comes with Unity. Is there any way to use KDE login screen instead?
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13 views

Deleting a virtual desktop from KDE

How can I delete a virtual desktop from KDE virtual desktops of an activity?
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2answers
52 views

Attempting to install Steam, Software Centre missing?

You guys were very helpful last week in my quest to download Steam. I am operating Ubuntu on my Toshiba Chromebook 2 and had Football Manager downloaded and was all good until my girlfriend this ...
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1answer
52 views

Kubuntu 15.10 window tabbing

Until Kubuntu 15.04, there was a very usefull function which let you adding multiple windows as tabs. In Kubuntu 15.04 and 15.10 I didn't find this option anymore. Is it removed or hidden? How can I ...
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2answers
247 views

How Do I Find My Current Desktop Theme in Kubuntu 15.10?

I have been using Kubuntu 15.10 for about 6 months, and have been using previous versions for over 3 years. I customized my desktop theme, icons, etc. to suit me, however, recently, I downloaded more ...
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7 views

Compose key problem on one KDE system

I have several Kubuntu systems, configured the same way, where I have enabled the compose key (I write in multiple languages), but the upgrade to 15.10 on one of those systems broke my compose key. ...