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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KDE Development on Ubuntu

I'm new to Ubuntu (14.04 LTS) and while I understand a bit about Linux I'm still confused about the entire concept because when I read terms like IRC, GTK, Gnome, Qt and so on, I get confused as to ...
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60 views

Kubuntu 14.04, KDE system settings no longer gives me control over pulseaudio

Under Device Preference in 'Audio and video settings' in kde system settings i now only have 1 "device" which is "PulseAudio Sound Server", previously i had 3 devices, 1 was my microsoft lifechat ...
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56 views

Kubuntu 15.04 - arrow in the scrollbar

is there a way to enable the little up and down arrows on the top and bottom (respectively) of the scroll bar? Some people are so used to it and miss it. Thank you!
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46 views

Is there an alternative way to install Kubuntu with live usb boot?

I have just downloaded Kubuntu 15.04 x64 iso and made a live USB and live DVD to install Kubuntu in live boot environment. but there is a problem. Plasma is far too heavy weighted and most of the ...
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320 views

Is there a kde dolphin thumbnail creator for video files that would use built-in thumbnails?

There are some video thumbnailers for Dolphin: kffmpegthumbnailer, ffmpegthumbnailer, etc. However, all of them just extract random frame from the video even if there is a built-in thumbnail in video ...
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25 views

X Windows Systems Install but does not work

I have Ubuntu 14.04 up and running. I install KDE using sudo apt-get install kde-full install runs to completion. Re-start machine and I get the lovely blue login window. Log in and the login ...
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28 views

Menu text is dark after installing KDE-desktop

I installed the package kde-desktop, and now my menus in Unity have dark text: Changing my theme in System settings > Appearance > Look does nothing to change the text color. How can I change ...
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111 views

Display kde-connect indicator in gnome top-bar

I've got kde-connect installed in Gnome 14.04. This is syncing fine with my mobile so it's all working ok. sudo add-apt-repository ppa:vikoadi/ppa sudo apt-get update sudo apt-get install ...
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2answers
431 views

“No protocol specified , Could not open X display” error when Running bleachbit as root on KDE

I have this error when running bleachbit through sudo or as root: ~$ sudo bleachbit No protocol specified /usr/lib/python2.7/dist-packages/gtk-2.0/gtk/__init__.py:57: GtkWarning: could not open ...
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447 views

Strange freeze when loading IntelliJ IDEA Editor

Since about three weeks IntelliJ is freezing when I'm trying to load any project. It's the same with a new project too. It seems like it freezes the whole xserver - I can't interact with any ...
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1answer
93 views

Is there a detailed user's documentation for KDE Plasma 5?

I just installed Kubuntu 15.04 and I can't find a single place with systematic description of all available desktop configuration settings. For example, I was setting Screen Locking Timeouts and I ...
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33 views

Custom locale settings when launching program from KDE menu

In KDE, I have noticed that GTK programs don't use the locale settings I specify in the KDE system settings, but rather the system-wide default locale. I want to change this behavior for Thunderbird, ...
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44 views

Digikam starts memory run

I am having trouble to run digikam on stock Ubuntu 14.04. I tried different approaches to install and run it using different ppa combinations. I installed it with the philip5 ppa. originally only with ...
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39 views

-Chroot- Ubuntu KDE Network Manageer

I'm running Ubuntu KDE through Crouton on the ChromeOS, and the network manager doesn't seem to show up (doesn't show up on XFCE either). I tried running it "Unknown Command". I tried reinstalling the ...
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26 views

Adjust limits of volumes using kmixrc configuration file

I want to be to adjust the volume level at 0% and 100% for a particular device (a USB audio device). It currently stops playing at 35% audio. I have not been able to find the documentation on the ...
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165 views

Issues while upgrading to plasma 5.4 in Kubuntu 15.04--freezes on boot

I have a fairly recent install of Kubuntu 15.04 that I upgraded to plasma 5.4. There were no errors on upgrading, but I noticed that it didn't fully upgrade. I didn't have the option of the new ...
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1answer
28 views

Search panel in KDE

I recently installed KDE. In unity when i press the "Windows key" or "meta key" I get a search panel where I can search for any programs or files or even it gets results from Web. In KDE I am not ...
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372 views

KDE on Ubuntu 15.04 - Missing .desktop Icons

I installed plasma 5.3 on my ubuntu machine and I am encountering a strange problem. Some application icons are just not displayed: this happens only with kde, while with other DE (unity, gnome and ...
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1answer
117 views

Using superkaramba widgets in Kubuntu 15.04

Is there a way to use superkaramba widget in Kubuntu 15.04? Some web pages say that it should be possible but I could not find out how. Since no package "superkaramba" was available I installed ...
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12 views

Add category to K menu

I know how to add an item to the K menu or add a submenu to a category that's already there. But how do I add a category (something like Graphics, say) to the K menu itself?
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47 views

KDE Plasma5 version

I have installed latest kubuntu with plasma 5. But when I go to the help -> about KDE menu in Dolphin it says KDE platform version 4.16.....is that expected? Have I missed (or messed up) something? ...
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42 views

KDE-theme is not showing in some programs after updating linux-headers

It seems my Kubuntu 14.04 LTS doesn't show the KDE themes (using Oxygen or QtCurve) in some programs (gnumeric, kazam, giggle, synaptic...) after updating the linux-headers. However, the KDE-theme ...
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66 views

Unable to start KDE on Kubuntu

Today I started my computer and I sudently had to follow a wizard to set the timezone, the user account and the keyboard layout. It restarted automatically and after that, nothing :/ I have the ...
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129 views

KDE's gui network manager can't connect to DSL using pppoe

I've tryed many linux distros with KDE (deb/rpm-based), there are always this problem. I have not a modem. There is no problem with connection with pppoeconf, but I wish do it using GUI. Would also ...
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3answers
4k views

How to Update Qt 5.4.1 to Qt 5.5?

I want to update qt 5.4.1 to Qt 5.5 or 5.4.2 because I want to test KDE Plasma on WayLand. Note: Please provide solution that consume least network resources as I have limited bandwidth. KUbuntu ...
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67 views

Manually selecting audio output

I just installed Kubuntu 15.04 and I am trying to configure audio output in a usable way. Since I am using both a USB headset and speakers at my system I need to manually (only manually) switch the ...
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6k views

How to upgrade to KDE Plasma 5 on Ubuntu 14.04.3?

I've followed many tutorial but my KDE is still version 4.12.2.... I've tested sudo apt-add-repository ppa:kubuntu-ppa/backports sudo apt-get update sudo apt-get dist-upgrade but nothing works ...
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2answers
172 views

How to preserve highlighting and annotations created in Okular?

I have to read through various research papers and during the course I have to highlight and annotate. But if I rename the file later or change machine the highlights and annotations will be missing ...
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1answer
89 views

how to pipe to a kdialog textbox?

echo "hello" | kdialog --textbox - I was hopping that row should pipe the word hello over to kdialog, and by setting the file argument to -, it should have used the piped text as content. Is it ...
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44 views

Double unlock needed with kde

I installed kde plasma desktop on my Ubuntu 14.04. The problem is that whenever the screen is locked, i have to type my password twice to unlock the session: once in the unity ubuntu and once in the ...
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26 views

The 'Run Command' dialog has corrupted graphics. Any ideas on fixing this?

I'm using KDE, and whenever I open the 'Run Command' dialog (e.g. with Alt+F2), the dialog is filled with corrupted graphics. Sometimes it's possible to see enough of the dialog to use it, but usually ...
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80 views

15.04 - Apple keyboard - remap Command button to become Right Alt

I have found some solutions to do what I want - remap Right Command key to become Right Alt on an external Apple (aluminum) keyboard - but all of the solutions were for the older versions of Ubuntu ...
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33 views

Tap to click working for one bot not the other user

I have two users on my new Kubuntu installation. For the first clicking via touchpad does not work. I've created a new user and for that one, without me doing anything else, it works just fine. Any ...
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60 views

Repaint problems on kde plasma 5.1.1 when switching or animating

I recently upgraded from a previous 5.* plasma version to plasma 5.1.1 using omgubuntu's instructions: sudo add-apt-repository ppa:kubuntu-ppa/backports sudo apt-get update && sudo apt-get ...
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172 views

Keep Dropbox notification icon hidden in Kubuntu 15.04

I enabled Dropbox at startup. This puts the dropbox icon on the notification bar. Because the icon doesn't match other icons in the panel, I am able to hide it by following: System tray settings > ...
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1answer
883 views

Kubuntu 15.04 Dual Monitors

I recently installed Kubuntu 15.04, mostly for the upgrade of KDE to KDE Plasma 5. I have been quite happy, but when I got back to school and plugged in my monitor I was very disappointed. Kubuntu is ...
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163 views

Kubuntu/KDE Plasma OpenGL Graphics Issues

I'm running KDE Plasma Workspace on Kubuntu 14.04 and I'm having graphics issues. When hovering the mouse over bars, the info window that opens had a large black box around it, when trying to change ...
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659 views

Why is Kubuntu so unstable?

Before I begin let me say I'm not attacking ANYONE here. I understand how hard it is to make a distro, especially for a lesser used one. Why is Kubuntu 15.04 so buggy, unstable, and generally ...
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21 views

Configure behaviour of Ctrl+Left/Right moveing the caret/cursor over words in kate

The behaviour I expect is, for example, ctrl+right should do the following, placing the caret at the end of the word: 1> H|ello world! 2> Hello| world! However kate does this, placing the ...
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108 views

Problems during installation of KDE-plasma

I am running Ubuntu 15.04. I tried to install KDE-plasma 5.3.2 but got errors during that process and now I am getting this error every time.I tried sudo apt-get install -f but that doesnt work ...
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19 views

Scientific plotter that works with dark themes

I have to plot and analyze some data, and the programs I know are Scidavis and Qtiplot. The problem is that both do not work on dark themes (white text on white, black text on black), and in the ...
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1answer
26 views

KUbuntu desktop weirdness

I use Kubuntu 14.04, and have it configured to use/display the /home/xxxx/Desktop folder in a "folder" layout. The problem is, I often use the desktop folder for downloads/temporary working directory ...
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1answer
944 views

How to restart KDE 5 interface?

How do I restart KDE5 interface from the command line without having to do a logout?
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1answer
101 views

How can I permanently/globally disable word wrap in kate?

In kate there seems to be "dynamic" and "static" word wrap options in view -> word wrap and settings -> configure kate -> editing -> general respectively. "Static" is off by default while ...
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133 views

Screensaver issues using KDE Plasma Workspace on Ubuntu 14.04

I'm fairly new to Linux/Ubuntu, replaced Win XP with it and LOVE it. I am having an issue with screensaver on KDE Plasma Workspace. I initially installed Ubuntu 14.04 with a Lubuntu desktop and after ...
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112 views

How do I install the marble plasmoid in KDE 5.9.0?

I recently upgraded from Kubuntu Utopic Unicorn (14.10) to Vivid Vervet (15.04). In the process, I lost the marble plasmoid that showed a day/night world map on my background. I have the marble ...
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1answer
226 views

Firefox does not open dolphin for inode/directory in kubuntu 15.04

this question has been asked multiple times like 1 and 2, but their solutions won't work anymore. Probably because of Plasma 5 and the new firefox versions. So I am using Kubuntu 15.04, Firefox 40.0 ...
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75 views

In Kubuntu 15.04, how do I switch the K-menu back to classic style?

I've updated to Kubuntu 15.04. Previously, the K-menu in Plasma could be switched to classic style by right-clicking and selecting Switch to classic style. In Kubuntu 15.04, this appears to be no ...
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45 views

BasKet Note Pads change default application for pdf reader

I have Basket version 1.81. I've inserted a link to a pdf file. My default pdf application on Ubuntu 14.04 is Okular but when I click on the link in the Basket it opens in Document Viewer. Moreover in ...
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82 views

VNC server repeatedly crashing

I am running tightvnc on ubuntu 14.04 I have installed kde-full, and as far as I know my xstartup is correct. whenever I run something like firefox, or muon, or really anything that isn't just a ...