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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Kubuntu 16.04 pixelated icons in task manager

In my install of kubuntu 16.04 running plasma 5.6.4 via the backparts ppa, the icons rendered on the task manager are extremely low quality for some applications. It seems for pre-installed kde ...
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1answer
32 views

KDE Plasma doesn't recognize keyboard shortcuts, until I switch away from and back to KWin

I just made a jump from Maté to KDE Plasma. (Kubuntu v. 14.04.4) (I love everything else about it.) I'm hardly a linux beginner, but I don't usually mess with X and some help is appreciated. When I ...
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66 views

messed up Unity after installing Gnome

I recently installed KDE and GNOME desktop environments on Ubuntu 15.04 and used them for a while. When I got back to unity, it is all messed up. The terminal looks like the terminal in gnome (white ...
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19 views

KDE dependencies error

After Telegram install using this, I got and error: KDEInit could not launch '--': Could not open library '/usr/lib/x86_64-linux-gnu/libkdeinit5_--'. Cannot load library /usr/lib/x86_64-linux-gnu/...
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19 views

KDE Framework 5 qtcurve window background transparency

I am running Ubuntu 16.04 with KDE framework 5 on a machine with an AMD gpu and the open source drivers. In KDE, I've tried using qtcurve but I can't seem to change window background transparency-- I ...
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32 views

Reduce size of widgets in Plasma panel

Is there some way to reduce the size of the widgets in the plasma (KDE 16.04) panel? I have a right-aligned panel and they appear to expand to fill the width, which also increases their height (what ...
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65 views

16.04 Akonadi for Kontact does not start

I upgraded from 12.04 to 16.04 in two steps today and the PIM tools, like Kontact, no longer work due to Akonadi/MySQL problems. akonadictl start gives this output/error: edA-qa@silent-red:~/.local/...
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52 views

Kubuntu 16.04 lock screen reappears after blanking

I recently upgraded my Kubuntu installation to 16.04. An odd behavior I have started to witness is that when I lock the screen, either by manual or timeout, it shows standard login windows on both ...
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1answer
36 views

Korganizer adding events

I am new to Linux and to Korganizer 4.13.3. To learn the latter, I am following the tutorial from their web site: https://docs.kde.org/trunk5/en/kdepim/korganizer/five-minute-course.html#course-...
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1answer
30 views

Lost transparency of the Default panel and a few questions about KDE

sorry for possible language mistakes -- English is not my native language. I've got two questions: After I installed updates in my kubuntu 14.04 suddenly the Default panel lost its transparency. Why ...
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1answer
118 views

sddm not starting after upgrade to 16.04, gnome and kde both installed

I upgraded a VM Ware virtual machine from 15.10 to 16.04. Services are up but the desktop is not, and the log messages are not very helpful. I am not sure if it's related to sddm settings, xorg, or ...
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43 views

Kubuntu 14.04: Font rendering on KDE Issues (Rendering Ubuntu fonts as Debian default)

Kubuntu 14.04 is working fine on my computer but I have recently installed it from my USB Device using other boot managers from which allowed me to boot to USB. Now after I got to Xscreensaver the ...
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6 views

Renaming applications name in KDE taskbar

I grouped my applications according to their name in my KDE taskbar. I d now like to be able to rename some of those and to keep them grouped together. To be precise, I often switch from ...
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80 views

14.04 to 16.04 upgrade : Huge slowdown, why?

I have an older laptop with 2GB RAM. I have been running Kubuntu 32-bit installations for a number of years. I decided to move from 14.04 to 16.04. I had the option of 32-bit or 64-bit. I do have the ...
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1answer
25 views

Disable file search in KDE Kickoff Launcher

When I open Kickoff, there is the option to type-to-search for programs. However, the search results also list any files on the computer and also Firefox bookmarks. I already succeeded to turn off ...
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23 views

Ubuntu broken when I installed KDE-Plasma

So I installed KDE-Plasma, being the Desktop Environment horde I am, and it was complete crap to what I was used to, so I tried to log out. It didn't log out and just stayed at a black screen with a '...
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2answers
42 views

Desktop settings for monitors not maintaining on reboot

When rebooting: Folder View Icons switched monitors (previously icons on 1 now on 2, etc) and my wallpaper for 1 moves to 2 leaving 1 with a black wallpaper. I have tried clearing .cache .kde .local ...
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79 views

Kubuntu Breeze-Dark not working as expected

I'm using Kubuntu 16.04. When I tried switching to breeze-dark I applied the following steps: Go to system settings --> workspace theme. Change to breeze dark. Go to color, double check that breeze ...
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47 views

KDE and Google Chrome wrong notification position on multiple monitor

With my Kubuntu 14.04.4 and google-chrome-stable, with a two monitor setting (the left one is the primary one and I cannot change this!), KDE notifications are correctly displayed on the first monitor,...
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19 views

Applications deleted after installing KDE

I installed KDE recently because I was getting some XWindow errors for normally useable applications in Unity. However, I noticed this install deleted some applications. This might just be normal ...
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1answer
15 views

Copying Okular notes form Windows to Ubuntu

I have many PDF-files with Okular-notes on them in Windows. Now I would like to copy them into my Linux system. Okular-notes are not saved within the PDF-files. In Linux annotations are located in ~/....
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1answer
685 views

Constantly crash Kubuntu 16.04

I have a fresh installation of Kubuntu 16.04, everything crashes : Konsole, firefox, plasma, few times borders of the windows disappear and there is no way how to control it anymore. I have to ssh ...
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230 views

Installing KDE on Ubuntu 16.04 [duplicate]

I'm on Ubuntu 16.04 and I want to use plasma desktop sometimes. Trying to run apt install kubuntu-desktop generates this output: Some packages could not be installed. This may mean that you have ...
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1answer
78 views

Plasma 5.5.5 NetworkManagement Widget won't load the QML file

Hello I am using Kubuntu 16.04 using Plasma 5.5.5 and Qt version 5.5.1. I was running kernel 5.5.3 and upon upgrade to 5.5.4 the plasma widget for network management seemed to break. So I downgraded ...
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165 views

KDEConnect or similar under GNOME

I'm a KDE-User (Kubuntu, openSUSE, ArchLinux) since years. I pretty like GNOME and I'm thinking about switching over to GNOME - but every time I think about it I think: "Oh hey, wait a moment, you can'...
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41 views

Can I install the all the software included with Ubuntu Studio on Kubuntu without losing the KDE environment?

I am planning on installing Ubuntu on my new laptop, but I prefer the KDE Plasma 5 DE and I am likely going to use a lot of creation software like that which is included in Ubuntu Studio. I don't know ...
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1answer
306 views

Apt-get not working after attempting to install kde desktop [duplicate]

So, I tried to install the KDE Desktop in Ubuntu, but it failed (I couldn't grab output for here). Now whenever I try to use apt-get , it says that it fails, and to use sudo apt-get -f install . ...
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41 views

How to correctly install various desktop environments on Ubuntu?

I am currently running a regular vanilla Ubuntu installation with mostly standard settings (except for power management preferences and similar customisations). I know that different desktop ...
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2answers
77 views

mount img with dolphin

I'm running 16.04 and I am trying to mount a img file, but I have no option to do so. How can I add the ability to mount? Preferably something gui based and just either a context menu option, or ...
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24 views

KDE taking long time finish splash, possible screen issue

I have Kubuntu 16.04 installed on a Thinkpad T450s. Every time I log in without my second monitor connected, the splash takes a long break at the end, with the fan going like crazy. If I have the ...
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2answers
340 views

How to install additional languages in Kubuntu 16.04 LTS?

I need my system to be able to display the characters of Chinese, Japanese, and Right-To-Left languages like Arabic. At the moment, it is not able to display the characters of those languages (e.g. ...
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1answer
458 views

Slow startup of Plasma 5.5 in Kubuntu 16.04

My recent Notebook (Intel i3-6100 with SSD) boots from BIOS to the login of SDDM within 8s. After entering my credentials it takes 31s (no matter if I have autostart of Firefox and Thunderbird). While ...
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4answers
90 views

Best desktop enviroment for old PC [duplicate]

I don't know if this is the right place to ask this question, there may also be duplicates, I just want to ask: Which will be the best DE for: Pentium 4 3.6 GHz (2007), 1GB DDR2 RAM, Intel 915G ...
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2answers
3k views

Plasma 5.6 on Kubuntu 16.04

Is there any way of running Plasma 5.6 on Kubuntu 16.04 without compiling it yourself? The Kubuntu Backports PPA isn't there yet (almost two bloody months after the release of Plasma 5.6) and Ridell'...
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1answer
102 views

Supreme error while updating to KDE on Ubuntu 16.04 [duplicate]

So here's the problem. I've deleted LibreOffice, and installed OpenOffice instead. All good there. Then, I've installed KDE Plasma. Looks like this guy has a thing for LibreOffice and KDE-TELEPATHY. ...
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1answer
43 views

Konsole hide tab bar

Is it possible to hide konsole tab bar? If so how. I've looked through the settings in the options panel for the profile, but nothing jumps out at me. Does a command line setting exist, or ...
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1answer
267 views

(K)Ubuntu 16.04 Plasma 5.5.5 takes long time at login [duplicate]

My new installed Kubuntu 16.04 with Plasma 5.5.5 takes very long time at login(~30s). I read about a similar bug https://bugs.launchpad.net/ubuntu/+source/plasma-nm/+bug/1509334 , but I don't think ...
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1answer
80 views

Turn off or disable the guest account in kUbuntu using KDE system settings GUI

How do I turn off or disable the guest account in kUbuntu using the KDE GUI?
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1answer
125 views

Plasma 5 Fonts Not Working

I recently upgraded to Ubuntu 16.04 and installed the kubuntu-desktop package in order to take advantage of KDE5. However, the fonts and similar visual systems are completely refusing to work, even ...
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30 views

How do i find all clipboards on ubuntu and kUbuntu

I posted the following security concern in the security.stackexchange: kde system tray clipboard Note: This post is asking a different question. In response to finding that when I use the program ...
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18 views

Why have I only two avtivities types on Plasma 5?

After installing kubuntu 16.04 I have only two activities types in Plasma: desktop and folder view. Why? Is something missing in the system?
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42 views

Where is the location of the keyboard input locale icons?

See the dark blue EN icon. The icon will change depending on the input you use and your keyboard config. I'd just like to know where these icons are located.
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2answers
6k views

Help installing kubuntu-desktop on Ubuntu 16.04

Well, the problem is that I'm trying to install KDE alongside Unity on Ubuntu 16.04. I'm using the command sudo apt-get install kubuntu-desktop* kdm* but I'm not sure if this is correct. If it isn't, ...
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54 views

How can I hide and protect devices in Dolphin (and other places in KDE)?

On most KDE file open dialogues and Dolphin, my devices (mounted and otherwise) are displayed as options. Clicking these convenient takes you to their mounted path (and mounts them first if they aren'...
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137 views

Wrong keyboard layouts

I want to be able to switch my keyboard layout between German and English (UK). As default I set it system-wide to English (UK, extended WinKeys), using sudo dpkg-reconfigure keyboard-configuration ...
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1answer
196 views

How to get an uniform look for Qt and GTK applications in xenial

Since I upgraded to xenial all the applications but the ones using Qt4 look uniform. For some reason the Qt4 applications like SpeedCrunch or Okular use the Plastique theme by default. The Plastique ...
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1answer
41 views

How to copy files from one directory to another after closing the Dolphin file manager in Kubuntu 16.04 LTS?

Please, I need your help with the following: The Problem: I can't copy/move one file (or more) from one directory to another unless if both directories are opened using the file manager. In other ...
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71 views

kwallet + gpg kubntu

I've installed kubuntu 16.04 and create gpg key. But when I try to create a new wallet with kwallet it can't find no one encryption key. I tried to create pair of keys with gpg and kgpg, in both cases ...
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164 views

Visual changes of the applications with root in Kubuntu 15.10/16.04

The problem is: when I start apps in Kubuntu with sudo or kdesudo, these apps change their visual themes and some of them are displayed with issues. As an example: Dolphin in normal mode: Dolphin ...
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1answer
33 views

KDM accepting username and password but doesn't load desktop

I installed kde with sudo apt-get install kde-full on my ubuntu 14.04 desktop, then I got a warning about running out of space (I can't remember it exactly) and kde was still installing so I killed ...