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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3answers
1k views

Maximized windows go under vertical taskbar with dual monitors on KDE

I just installed KDE and put the taskbar vertically on one of my 2 monitors. The problem is that maximized windows don't recognize the taskbar space. The maximized windows go under the taskbar. It ...
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1answer
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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11 views

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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2answers
2k views

Ctrl+F4 doesn't work in KDE for Firefox / Chrome / Chromium

I observed that the shortcut for closing a tab in Firefox/Chrome/Chromium (Ctrl+F4) doesn't work on KDE. It seems it is being intercepted by KWin. Is there any fix or workaround for this problem?
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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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1answer
87 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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25 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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4answers
2k views

Icons not showing on sudo dolphin on 15.10

Greetings again everyone, I update my system recently from 15.04 to 15.10. And among the many bizarre errors, when I open dolphin as root, by using kdesudo dolphin, no icons load. They do load ...
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2answers
55 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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1answer
430 views

How to resize a Folder View widget on the desktop?

It's surely my fault, but I am not able to resize the folder view widgets I've put on the desktop. In the previous release (14.04, KDE 4) the folder view widgets all had auto-appearing hanldes for ...
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0answers
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?
3
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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 ...
3
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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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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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2answers
148 views

Amarok doesn't play any songs

I've recently installed Kubuntu 15.10. After adding my local library to amarok, it doesn't play anything. Double click on a song does nothing. No errors etc. Playing songs/video in VLC is working ...
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2answers
30k 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.
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1answer
1k views

Baloo not working

The new KDE indexing service is of fundamental importance (as was Nepomuk before it) but, unfortunately, it does not work as it should on my machine with Kubuntu 14.04. Indeed, it does not work at all,...
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3answers
2k views

virtuoso-t CPU usage increases a lot when kmail is launched

This relates to Kubuntu 13.04. It is a clean install into a clean /home folder. When I launch kmail the CPU usage of the virtuoso-t process increases by a huge amount. I have an i5 laptop and the ...
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0answers
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
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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0answers
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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0answers
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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1answer
5k views

What are the system requirements for installing KDE Plasma 5?

I'm about to install Plasma 5 on older hardware. What are the minimum system requirements of KDE Plasma 5?
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20 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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0answers
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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1answer
380 views

Dolphin: unable to single click on files and directories to open it

Even if I setted in system-settings->input devices->single click ` I tried rm /home/pg/.config/dolphinrc /home/pg/.kde/.kde_save/share/config/dolphinrc /home/pg/.kde/share/config/dolphinrc I tried ...
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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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0answers
16 views

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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0answers
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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1answer
68 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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1answer
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 ...
5
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1answer
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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323 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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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 ...
2
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0answers
97 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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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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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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4answers
79 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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1answer
25 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 ...
5
votes
1answer
267 views

Can't drag files from Dolphin to Chrome

Up until a couple of weeks ago, when I would try to drag and drop files from Dolphin (the default File Manager in Kubuntu) to Chrome (e.g., to add to an email or upload a video to youtube), there were ...
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0answers
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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0answers
16 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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0answers
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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0answers
14 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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1answer
120 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 ...