The official Ubuntu derivative using the KDE Plasma Desktop

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Kubuntu Cannot Update

I tried updating Kubuntu using Muon Update Manager which failed to apply changes. /var/cache/apt/archives/project-neon5 kio_0.0+git20141008.0321+neon4~faa423d~14.04_amd64.deb trying to overwrite '/...
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52 views

Lubuntu alongside Kubuntu - doubled up apps

I installed Kubuntu, and on top of that lubuntu-desktop as I need to use the Lubuntu environment for testing some things. Now when I log into Kubuntu there seem to be some Lubuntu applications ...
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127 views

How to bind media keys to Pithos actions?

I've looked through the settings both of the system and of Pithos, and it seems there is no way to govern Pithos using the media keys (Play/Pause, etc.). I use pithos more than amarok, so I'd like to ...
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188 views

How to disable dynamic contrast in Kubuntu?

My environment is kubuntu 14.04 and graphic card is nvidia GTX 560. The problem is with dynamic contrast changes. For example when I open "bright" webpages it looks like monitor is brightening up as ...
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57 views

Error While installing Kubuntu 14.04 in Virtual machine

Running Kubuntu 14.04 in Virtual machine Gives me an Error :- Boot : could not found kernel image : vmlinuxz.efi how can solve these ?
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358 views

Slow network and file copy performance

I'm experiencing a weird problem with my Kubuntu installation. I'm running 14.4 now that was upgraded at least twice using the built-in distribution upgrade. The problems started after the last ...
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166 views

Multiple sound source playback broken after Pithos

I have an odd situation. I have a recently installed Kubuntu 14.04 that I've been using as a work environment. It's not uncommon for me to use pianobar or MPD to provide background music, but still ...
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118 views

Alt and Prt Scr keys not working

Recently afer installing Kubuntu 14.04 and GNOME 3 on top of that, everything works fine, but my Alt and Prt Scr keys are not working. Previously I have installed Ubuntu 14.04 and due to some reason ...
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502 views

modifier only ibus keyboard layout switching in kde

I recently upgraded to kubuntu 14.04. I used to have Shift+Alt as a shortcut to change keyboard layouts back in 12.04 but its not working now. I see <Shift><Meta> as next input shortcut in ...
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310 views

How do I use lightdm for login instead of light-locker?

I installed xubuntu on my laptop and recently removed nearly all of the xfce4 packages in favor of a kde desktop. However, light-locker is still used for the login screen. How can i remove it and ...
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128 views

Okular opens large pdfs with blank pages

I can't open large files (above 10MB) with Okular. This is a problem with files I save and open up in Dolphin and files I open directly in Firefox (i.e.e-books). Symptoms: -PDF opens but is blank or ...
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16 views

Ubuntu Linux install

Please am trying to install Ubuntu alongside windows 8.1 but it stays on the screen without booting into the Ubuntu when I choose the try Ubuntu or install Ubuntu. Please can u help me because the ...
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57 views

Why do konsole and kate have different menubar color than other apps?

Here are some screenshots: I am using Kubuntu 14.04.
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158 views

Problem upgrading from Kubuntu 12.04.4 to 14.04

Good morning, I have Kubuntu 12.04.4 LTS and would like to upgrade to 14.04 LTS. I tried to follow the instructions at https://help.ubuntu.com/community/TrustyUpgrades/Kubuntu/12.04LTS but after ...
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105 views

How can I make the Adobe flashplugin use Pulseaudio under Kubuntu 14.04?

I have trouble getting the sound from firefox to output in an external (USB) sound card. I understand there are some issues around getting flash to play sound here from googling the question, but I ...
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602 views

Kubuntu 14.04 does not unlock the screen

I installed Kubuntu 14.04 on my Acer Aspire E1-431-2896, this installation took place normally with the default installation of updates. The problem is occurring in my everyday use, when the notebook ...
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97 views

Install on Dell E6430 hangs

I'm trying to install kubuntu 14.04 on a Dell latitude E6430. I've tried both install from usb and from dvd. The different attempts result in a little different behaviour, but most of the time, I ...
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79 views

Ubuntu unity error after kubuntu-desktop

After installing kubuntu-desktop, when I log into a default unity session there are some minor cosmetic errors. The drop down menus (File, Edit, etc) have black words on the black menu and the ...
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45 views

Time format of Kubuntu 14.04 is in Khmer

I've just install Kubuntu 14.04 on my MacBook pro mid 2010. But the problem is even though i set the language in Local (system settings), the time format is still wrong. It also effects Skype ...
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172 views

notify-send can't display popups

I have a problem with notify-send. It's clearly visible that it tries to show the popups, but they only come up about 20 pixels at the bottom of the screen. Then when it times out I see the whole ...
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993 views

Problem with fonts on Kubuntu 14.04 and FF29

yesterday I updated my machine to Kubuntu 14.04 and Firefox to version 29. Now, I have an issue with some fonts, specially on rendering inputs. The font is noticeable bolder and bigger than before, ...
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457 views

KDE does not notice laptop running on battery

After upgrading to Kubuntu 14.04, KDE does not notice that the laptop is running on battery! The battery icon continues to show the 'charging' symbol. But the battery level shown in the icon keeps ...
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306 views

Cant Start NVIDIA performance mode

What does this error means? Is not possible to select the NVIDIA GPU, whenever I try this blank error appears and returns immediately to to Intel Graphics I just upgraded to Kubuntu 14.04, but ...
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2k views

apt-get 'held broken packages' attempting to install kubuntu-desktop

$sudo apt-get install kubuntu-desktop Reading package lists... Done Building dependency tree Reading state information... Done Some packages could not be installed. This may mean that you have ...
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43 views

QT 4 update, removing lots of libs

I get a message from Muon update module aksing to update QT 4. Thats fine, but it also want to remove LOTS of libs and programs (incl spotify, ksystemlog, krdc, krfb, kdepim-runtim, userconfig and ...
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306 views

Scroll mouse -> scroll up screen instead browse history

I'm new with Z-Shell, I got a problem that when I scroll my mouse, it shows me the zsh-history, but what I really wanna is to scroll up the screen, just like I drag the scrollbar on the side. seems by ...
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126 views

kubuntu System GUI radically changed after upgrade

Yesterday I did a full system upgrade, and now the GUI has changed in a way that makes the system very difficult to operate. On the top bar of the windows there are no longer the close, expand, ...
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167 views

Cannot install on computer with multiple GPUs?

Background. I got a problem installing (K)ubuntu yesterday. It started well with the Kubuntu 13.04 installer recognizing my 3 screens out of the box for the splash screen: pic1. However, after that, ...
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232 views

Problems with 5GHz wifi in Kubuntu

NetworkManager works just fine as long as I'm connected to a 2.4GHz access point. I can suspend, resume, etc and it always finds my proper network and reconnects. The problem begins when I select a ...
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1k views

Brightness at 100% since updating from Kubuntu 13.04 to 13.10

since I've updated to Kubuntu 13.10 my brightness level is at 100%. I already googled around and tried different tips, but none of them worked. I've edited /etc/default/grub to ...
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133 views

Massive issues with torrents

I'm using Kubuntu 13.04 and until some weeks ago I was perfectly able to download torrents via KTorrent. But suddenly when opening a magnet link via KTorrent, the torrent didn't start anymore (not ...
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325 views

White text on white background in selections after fresh install in vm

I freshly installed Kubuntu 12.04 in my Oracle VM VirtualBox on Windows 7. Everything works fine except, that if I select any text in many applications (for example Bluefish-Editor) the background is ...
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738 views

Awesome and LXDE desktop managers messed up KDE

I saw a desktop manager named "Awesome" earlier on Google+, and thought I'd give it a try. In short, I didn't like it, but it got me wondering what other desktops were like, which I hadn't tried. The ...
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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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14 views

How to set Jalali calendar in kubuntu 16.04?

In earlier versions of Kubuntu I can set custom calendar for the whole system but now I can't find it . How can I set Jalali calendar in Kubuntu 16.04?
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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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32 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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18 views

After upgrading my kubuntu to 16.04 black screen is displaying

After upgrading my kubuntu to 16.04 black screen is displaying.kscreen is already installed.i m only getting a console.what to do?
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29 views

Problem with wifi (iwlwifi)

My wifi connection has some problem: when I first boot and login to KDE it is connected to my wifi modem automatically and when clicking on the network-manager icon it display all the wifi Access-...
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12 views

Kubuntu 15.10, Virutalbox - export stops

I'm running a Ubuntu 14.04 Guest OS on a Kubuntu 15.10 Host (don't ask, not my idea). Both are 64bit systems. Now, I'm trying to export the VM so it can be copied to another host. However, the ...
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28 views

16.04 Laptop Keyboard freezes on Lid Close, how do I get it back?

Asus laptop with i5-3230m cpu. Everytime I close the lid the keyboard locks. The only solution I have found is to hibernate, which is really just a quicker reboot. Is there anything I can do to ...
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51 views

NFS between CentOS and Kubuntu

I have a CentOS 6.8 server (192.168.2.101) and Kubuntu 16.04 (192.168.2.12). I followed this tutorial https://www.digitalocean.com/community/tutorials/how-to-set-up-an-nfs-mount-on-ubuntu-14-04 as I ...
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11 views

Logitech C720 Webcam microphone not working

I have a Logitech C720 Webcam with an integrated microphone. The webcam works perfectly, however the microphone does not. lsusb obviously detects the device, because the webcam works, and the device ...
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17 views

Korganizer time zone

How to force Korganizer to use 24 hour clock format. I set Region to Poland. I set Translations Preferred Languages to American English. Time on the panel is in 24h format but in Korganizer it's 12h.
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16 views

My 16.04 laptop just logged me in as root without a login screen

After boot, my laptop on up-to-date kubuntu instantly went to the desktop loading screen without asking for any passwords. Turns out it had logged me in as root automatically. I have not set a ...
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16 views

Kubuntu mirrors second monitor connected through VGA

I have dell optiplex 3020 small factor desktop. Installed Kubuntu 16.04LTS recently. When I connected the second monitor to the VGA port, second monitor is by default mirrored. Could not find any ...
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25 views

Unable to install Kubuntu 16.04 because one of the existing partitions is mounted at /cdrom

I've been trying to install Kubuntu 16.04 for a couple of days now, but couldn't make any progress. I've done my research and none of the workarounds proved effective. I am able to create a bootable ...
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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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49 views

KUbuntu 16.04 Networks not displaying and WIFI networks

I've been searching for a resolution for the past week after applying updates (No idea what update broke this). Anyway WIFI is working just fine but because there is no connected WIFI network in the ...
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54 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 ...