The official Ubuntu derivative using the KDE Plasma Desktop

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45
votes
5answers
21k views

How do I open the Application Launcher on KDE with just the meta (“Windows”) key?

How do I open the application launcher ("start menu") of Kubuntu with my Windows key? Similar to how the Start menu in Windows is opened. I don't want to use Alt+F1.
34
votes
5answers
18k views

What is a activity in KDE and what can I do with it?

In the top right corner of a standard KDE/Kubuntu installation you'll see this: But seriously, I seem to be unable to understand what those "activities" are and what it would enable me to profit ...
32
votes
13answers
62k views

Unable to change brightness in a Lenovo laptop

Brightness adjustment keys <Fn + ⇑/⇓> have no effect (although they are recognized by the environment), and I can't change the brightness using GUI tools as well. This seems like a problem in ...
23
votes
4answers
49k views

How to remove all traces of KDE installed

I have 2 computers with Ubuntu but on both I installed KDE to have another option for the users. Since Unity has come along very well, there has not been a need to use KDE for a while now. How can I ...
19
votes
5answers
41k views

How to reset monitor settings to default through terminal?

I have a tricky problem regarding multiple monitors on KDE (Kubuntu). I have a laptop which, at home, is connected to two monitors - VGA and HDMI. That works only when the built-in laptop display is ...
18
votes
3answers
141k views

Installing KDE in Ubuntu 12.04

Is it better to use Kubuntu or Ubuntu with KDE? For example, if I were to install KDE in Ubuntu will there be any instability or conflict? Will these two get mixed up with themes and icons? I have ...
16
votes
3answers
4k views

How do I install support for Unicode emoji in Chromium?

How do I make Chromium on Kubuntu render Emoji Unicode characters ? Like these : 💘💙💜💗💚❤💓💛💚💗
16
votes
1answer
22k views

Should I set up my CUPS Printing to use IPP, LPD or URL?

When I got to add a network printer, I'm always confronted with the same dilemma: Do I set up the printer via IPP, LPD, or using it's IP address (AppSocket/Jetdirect?) and why? What are the ...
15
votes
10answers
44k views

How to completely remove kubuntu-desktop from Ubuntu

I installed kubuntu-desktop just to experiment with its interface. Then I decided to remove and did the traditional apt-get purge and autoremove but it seems elements of kubuntu are still there. For ...
15
votes
4answers
11k views

How to completely remove desktop?

I wanted to switch to Xfce (I had KDE and GNOME installed), and I did this : sudo apt-get install xubuntu-desktop sudo apt-get remove kubuntu-desktop sudo apt-get remove ubuntu-desktop sudo apt-get ...
15
votes
2answers
28k 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.
14
votes
1answer
13k views

How do I install/upgrade to KDE 4.9?

Recently kde released kde 4.9, I wanna test it from my ubuntu 12.04 . How to to install kde 4.9 in ubuntu? Is there any ppa available
14
votes
0answers
10k views

“System restart required” flag, who sets it and why? How to read it? [duplicate]

When you log into Ubuntu (10.04 in my case), you get to see this notice saying: *** System restart required *** Now, I'm wondering what system component sets it and why it gets set? Using ksplice ...
13
votes
7answers
38k views

How can I copy/paste files via RDP in Kubuntu?

I recently installed the latest Kubuntu (x64) on my work machine as I am trying to migrate away from Windows. Unfortunately I use RDP very frequently to connect to customer's servers and need to be ...
13
votes
4answers
13k views

Avconv warning while downloading YouTube video

I received this warning: Your copy of avconv is outdated, update avconv to version 10-0 or newer if you encounter any errors. while downloading a YouTube video with youtube-dl -f 137+140. I am ...
12
votes
3answers
2k views

Will Unity be considered as interface for Kubuntu?

I'm hearing as how Unity is using nux (and not gtk) for its gui. I realise that it's tangled up with Compiz somehow, but I wonder if anyone has considered Unity as the future interface for Kubuntu... ...
12
votes
10answers
4k views

Code snippet manager for Ubuntu?

I'm looking for a good code snippet manager, with syntax highlighting and search capabilities. Another important feature is the capability of changing the code area background color. I have tested ...
11
votes
3answers
22k views

Error getting authority: Error initializing authority: Could not connect: No such file or directory (g-io-error-quark, 1)

I just got this error from Kubuntu 15.x when starting up after restart to upgrade kernel. Error getting authority: Error initializing authority: Could not connect: No such file or directory ...
11
votes
3answers
19k views

Can't add repo keys

I'm tring to add a keys (on Kubuntu 12.04) sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys SOMEKEY and I constantly get gpg: requesting key 8AC93F7A from hkp server ...
11
votes
3answers
53k views

How to format/partition SD card?

How can I format or partition SD card in Kubuntu? Is there an application with GUI for this?
11
votes
4answers
68k views

What are the differences between Lubuntu, Kubuntu, and Ubuntu? [duplicate]

Are Lubuntu, Kubuntu, and Ubuntu the same except for the desktop environment and a few programs?
11
votes
7answers
25k views

Black screen after login Kubuntu 15.04

I have updated my kubuntu 14.10 to kubuntu 15.04. And now after boot, when I enter my password on welcome screen, I will get black screen. It's looks like screen powered off. No cursor, no change ...
11
votes
4answers
15k views

How do I remove the KDE 4 Plasma Tool Box/cashew icon from the desktop?

I'm looking to remove the "Tool Box" icon in the upper right hand corner of my KDE 4 desktop, but can't find any configuration setting anywhere to do so. I'm new to KDE 4, so it's quite possible I ...
11
votes
2answers
15k views

How do I install KDE and retain LightDM as a login manager?

I want to install KDE in my Ubuntu 12.04 . I am using LightDM. So how can I fully install KDE? I do not want to remove LightDM. I want KDE but without any confliction with it.
11
votes
4answers
9k views

How to turn off screen (DPMS) together with locking session in KDE?

First of all, I'm aware a similar question for GNOME is asked here: "Switch off laptop backlight when locking screen". Objective I would like to turn off my screen on locking the session for power ...
11
votes
1answer
1k views

How to disable KDE's brightness OSD?

I am using lightum to automatically control the screen's brightness depending on the surrounding light (on a Retina MacBook Pro). The problem is, though, that KDE picks up the change and displays the ...
11
votes
2answers
2k views

Less graphics power all the sudden (Intel HD 3000)

I have a Intel Sandy Bridge i5 with the HD 3000 graphics card. I used to be able to play Urban Terror and Nexuiz comfortably with 85 and 60 frames per seconds until mid/end of October 2012, the former ...
10
votes
1answer
4k views

How do I stop the screen from being locked on resume on Kubuntu/KDE?

Per How do I stop the screen from being locked on suspend? I want to be able to sleep and resume without the screen locking. All the previous answers seem to involve fairly Gnome-specific things that ...
10
votes
1answer
21k views

Kubuntu 14.04 - No Screen resolution changer?

I just installed a fresh new kubuntu 14.04 on an intel nuc and everything works fine, but I can't find an option to change the screen resolution. When I go to Settings -> Display I get the following ...
10
votes
6answers
19k views

How to change/fix system's locale when you setup in a language not official in your country?

How do I set up a global locale for the computer? I have recently installed Kubuntu 14.04LTS in english but since I am in Spain, I chose Spain as a country and then changed locale options so that I ...
10
votes
3answers
3k views

Is there an Ubuntu One client for Kubuntu?

Is there a UbuntuOne client for Kubuntu or how do I make UbuntuOne work in Kubuntu?
10
votes
6answers
10k views

Bluetooth mouse not auto-reconnecting to laptop

This has been asked, and answered, a million times before. And I think I've read almost all those questions and answers, and tried as many of the solutions as I can. However, I still can't get the ...
10
votes
2answers
5k views

intel_do_flush_locked failed Input/Output error

Sometimes while running apps using OpenGL, the following message comes in the command line where I run the app. I have a Sandy Bridge integrated graphics card (the same as in the bug reports) ...
10
votes
1answer
686 views

How to make digiKam remember Google's Two-factor Authentication password?

I use digiKam on Kubuntu 12.10 to organise my photos and really like being able to upload to Picasaweb using kipiplugins. Unfortunately after having set up Google two-factor authentication I now need ...
9
votes
4answers
5k views

Flickering in KDE Plasma 5.4

I am facing flickering in KDE Plasma 5.4. Flickering stops when I change Compositor Rendering Back-end To OpenGL 3 and then change again to OpenGL 2. OS: KUbuntu 15.04 Graphics: Intel HD 4000
9
votes
1answer
31k views

Ubuntu vs. Kubuntu vs. Xubuntu [closed]

Is there a link or any side-by-side comparisons detailing why one would choose Kubuntu or Xubuntu over Ubuntu? I am running on a somewhat older machine (Dell optilplex 745 tower), so how would this ...
9
votes
2answers
4k views

How can I disable Hibernate completely in Kubuntu?

I have seen the answer on How to disable hibernating?, but I have no such file. Possibly because that suggestion was written for Ubuntu, not Kubuntu (KDE, not Gnome). I do not have a swap on my ...
9
votes
5answers
844 views

Broken fonts in KDE (Kubuntu 14.10)

From time to time I experience a very strange bug: Fonts are broken not only in Firefox, but in the whole KDE environment. What can I do to fix it? UPDATE #1 Installed Kubuntu from scratch and ...
9
votes
1answer
381 views

How can I set a launcher to start an application in a specific desktop

I've got a bunch of desktops set up for specific purposes. I'd really like to be able to tell an app what desktop it should launch in. I can't find any options for that, is there any way to do it?
9
votes
1answer
640 views

screen blacks out after pressing a key on keyboard, specially enter key

I have natty and have installed kubuntu-desktop package. Before installing it, everything was fine but after that, this thing happens: When I'm typing, after stroking a key, screen blacks out, fan ...
8
votes
3answers
12k views

Bumblebee Intel+Nvidia on 15.10 blackscreen issue

I have a fresh install of Kubuntu 15.10, i have a msi GT70 laptop with optimus. I have installed bumblebee bumblebee-nvidia, it is absolutely needed because nouveau keeps crashing at login. So i ...
8
votes
2answers
9k views

Can I change my Ubuntu install into a different flavour (like Kubuntu)?

Can I convert Ubuntu into another form of Ubuntu like Kubuntu or Ubuntu Studio and the system recognize itself as the new form? UPDATE: After getting an answer and talking with people, I managed to ...
8
votes
3answers
20k views

How to open the display from ssh login?

Is there any way to open the desktop display from terminal(ssh login)?
8
votes
4answers
2k views

Right-CTRL key not supported in Kubuntu 14.04?

In my fresh install of Kubuntu 14.04, I can't use anymore the (pretty useful) shortcut to move along words: (right) CTRL + Left (or Right) Arrow. The Left-Control key is working fine. If I try to add ...
8
votes
4answers
24k views

Can I get the Ubuntu Software center in KDE?

Is there a way to get the Ubuntu Software Center on Kubuntu?
8
votes
7answers
33k views

Can I connect to my company's Exchange server through Kontact?

Running Kubuntu 11.04 (Natty) and am trying to replace Outlook. I need access to calendaring and email but have not been able to figure things out. A Google of things doesn't give me very good ...
8
votes
2answers
15k views

How can I install Unity in Kubuntu 12.04?

I'd like to try Unity, but I'm running Kubuntu 12.04 (64-bit). How I can I install the Unity desktop environment? I tried "sudo apt-get install unity", but after installation and choosing "Gnome" ...
8
votes
1answer
4k views

What is the equivalent of gksudo in Kubuntu/KDE?

In regular Ubuntu (Unity/Gnome), I use gksudo to run GUI programs with root privileges. I'm trying out Kubuntu (or KDE) now -- what do I use?
8
votes
6answers
14k views

Screen turns off while VLC is playing movies in Kubuntu

When I play a movie on VLC the screen turns off after 10 minutes. I used to run Ubuntu and this didn't happen there.
8
votes
3answers
6k views

Ubuntu 13.10 suspend crashes KDE / black screen on wake

Setup I have a fresh install of Ubuntu 13.10, with KDE (installed via Ubuntu server disk and sudo apt-get install kubuntu-desktop). Problem Whenever I suspend the computer while in KDE (either via ...