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: kscreen: Primary output changed from KScreen

My friend have Kwin problem random times. The window graphic (bar, title and buttons) disappear. Kwin replace methods not solve the problem. Strange Syslog informations to help below. I need more ...
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8 views

How do I change startup sound in KDE Plasma?

It's nice that KDE Plasma plays sounds on startup, but that awful click sound (or whatever they call it) is annoying. Anyone know how to change the startup sound in KDE Plasma?
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jKDE Neon Boots into Intramfs, No Error

I just installed kde neon, and after rebooting for the first time (not including the reboot after installation), the computer now boots into the initramfs prompt. This happens after the grub and the ...
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22 views

KDE Plasma and KDE Connect

I have kubuntu 16.04 with KDE plasma, kernel 4.6.2. I connected android smartphone to KDE via KDE connect feature. Its work fine exclude notification from android to desktop. Notice, that ...
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14 views

Kubuntu KDE crash on unplugged monitor

I got a medion laptop computer running on Kubuntu 16.04. I was working on an essay, so I plugged my TV in as secondary screen. Now I wanted to simply take the laptop to my bed to watch a movie and as ...
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26 views

How can I restore KDE?

I installed a while ago KDE 4.14.13 on my Ubuntu 14.04. Everything was fine and smooth untill my laptop ran out of battery and shut down a couple of days ago. After plugging it back into the AC and ...
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31 views

System Requirements for Running Kubuntu 16.04

I have an 5 year old acer-aspire-5733z computer which runs ubuntu 16.04 now. I saw something amazing in KDE and now I want to install Kubuntu 16.04 in it. I saw the system requirements for Kubuntu and ...
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13 views

How to add icons on the KDE Menu Editor icon source?

I want to know the location of items of these two options: System icons Other icons I do not know how to add icons to the list. How to do?
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1answer
26 views

Where to change how xdg-open opens urls? sync with kde-open?

kde-open "http://askubuntu.com/" is nice, and opens the URL in my webbrowser but xdg-open "http://askubuntu.com/" opens the link in my texteditor :-( I know where I find the file-association in ...
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1answer
38 views

Unmet dependencies and possible conflicts? [duplicate]

It seems that I have messed up somewhere along the line and now I can no longer install anything without the following message showing up: The following packages have unmet dependencies: kde-...
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11 views

Windows always opened between the two monitors

I have KDE 5 and a second monitor. Every time I open an application, the window appears exactly between the two screens. How can I avoid this, and for example, either: Tell KDE to open the ...
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1answer
19 views

How to remove gap around maximized Emacs frame on KDE4

I am using Emacs (24.3.1) on Kubuntu (Ubuntu 14.04 with KDE 4.13.1). On startup I maximize my Emacs frame with this command in my init.el: (custom-set-variables ... '(initial-frame-alist (quote ((...
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1answer
29 views

Recovering uninstalled packages

I did sudo apt-get purge *pulse* ; sudo apt-get purge skype; dpkg -r skype; Output from logs: Start-Date: 2016-06-15 22:26:03 Commandline: apt-get remove *pulse* Requested-By: abhishek (1000) ...
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20 views

Problems with Dutch translations

I installed Kubuntu 16.04 in Dutch. When starting the first time I got the message "can not start Plasma 5". I found a solution in Kubuntu 16.04 Plasma can not start after fresh install There it is ...
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63 views

How to get unity desktop on ubuntu 16.04 server?

I have a problem with one of my boxes such that the GUI login does not work. I ssh'd to it and backed it up to my network and want to upgrade it to 16.04 from 14.04 with a fresh 16.04 install. Since ...
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22 views

What package(s) to install for missing button icons in KDE applications on Unity?

I run some KDE applications on Ubuntu 16.04 Unity, such as KDE Connect. I seem to be missing some packages that provide button icons: Does anyone know which packages to install to have these ...
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18 views

How to downgrade plasma 5.6.4 to 5.5

I installed via the backports ppa but experiencing pretty much bugs. Is there any way to downgrade?
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12 views

Make the KWIN cube act like the Compiz Cube

So, I'm using Ubuntu 16.04 with KDE installed. I like the 3D cube in KWin and I also like KWin's effects, but I prefer the way Compiz handles it's cube and key bindings. I was wondering if there was a ...
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Loud clicks and beep at high sound volume [migrated]

I'm using Linux Mint 17.3 Cinnamon edition, installed it recently. Before I always used KDE edition and everything was alright. I didn't like Cinnamon for a lot of reasons so I just installed 'kde-...
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35 views

system sucessfuly login even with wrong password

Someone help, I have Kubuntu 16.04 installed on my system with KDE 5.6 which i upgraded from KDE 5.4 from Kubuntu backports ppa. Now the system logins sucessfully even with a wrong password. Also sudo ...
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2answers
54 views

How do I install the KDE desktop environment on Ubuntu? [duplicate]

I am a new user of Linux. I just installed Ubuntu and now I want to try the KDE desktop environment. Can you guide me how to set up KDE in Ubuntu?
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1answer
23 views

Share Wired Ethernet Internet Connection via Wifi Adapter to Connect from Android

I am using ubuntu 14.04 with kde plasma and i want to share my wired ethernet internet connection via my realtek RTL8188eu Wifi adapter so i can connect and browse internet from my android Samsung ...
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98 views

Changing KDE's oxygen-gtk3 colors for tooltips (fixing Firefox 46)

I use KDE (Kubuntu 14.04), the Oxygen theme and Firefox, and FF46 has several bugs with GTK3, the most annoying being displaying tooltips as dark text over a barely darker background. So I'am ...
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69 views

Install kde on ubuntu 14.04

My company gave me a laptop setup with ubuntu 14.04. I would like to install KDE however there seems to be an issue: root@ufc3fdb86dd16574fead4:/home/local/ANT/bogoyche# aptitude install kubuntu-...
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36 views

How to display KDE lock screen time in 24-hour format

Running Kubuntu with the Plasma desktop, 16.04. I have my desktop configured to 24-hour time, which is what I vastly prefer. But when the lock screen comes on, it shows me the detested AM/PM ...
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77 views

Surges in fan speed on Lenovo ThinkPad

I am using Kubuntu with Ubuntu 14.04 and KDE 4.13.3 on a Lenovo Thinkpad (more specific spec below). Since some time now I am getting extreme surges in fan speed that drop off immediately after. Most ...
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52 views

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
26 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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47 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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17 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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15 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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19 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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30 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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38 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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19 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
22 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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73 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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87 views

Power management, caffeine and crash problems-Kubuntu 16.04 [on hold]

I have installed kubuntu 16.04 about 2 weeks ago and I ran into tons of problems since then. I have suceeded in resolving couple of them but the ones listed in here are too much for me to handle. I am ...
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1answer
31 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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5 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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75 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
10 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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17 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
39 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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48 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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42 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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18 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
14 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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418 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 ...