The official Ubuntu derivative using the KDE Plasma Desktop

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How to debug why Kubuntu crashes?

I am installed Kubuntu 16.04 in a Virtual box VM. I have a SSD disk and have disabled atime in /etc/fstab to decrease number of writes to SSD. All the latest updates are installed. When I start ...
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213 views

(K)Ubuntu 16.04 Plasma 5.5.5 takes long time at login

My new installed Kubuntu 16.04 with Plasma 5.5.5 takes very long time at login(~30s). I read about a similar bug https://bugs.launchpad.net/ubuntu/+source/plasma-nm/+bug/1509334 , but I don't think ...
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2answers
128 views

Install Kubuntu(16.04) and GRUB to an external drive to create a portable OS

Yesterday I tried to install Kubuntu 16.04 LTS onto an 8GB USB2.0 Stick following this answer. I changed the location for the bootloader to install to sdb(Which indeed was my usb drive). Still kubuntu ...
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1answer
60 views

Turn off or disable the guest account in kUbuntu using KDE system settings GUI

How do I turn off or disable the guest account in kUbuntu using the KDE GUI?
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76 views

Plasma 5 rendering errors 16.04

I'm having a hell of a time getting a Plasma 5 desktop to coexist with my regular Ubuntu 16.04 environment. I've been using this machine since 13.04 (updating 13.10 -> 14.04 -> 16.04) with no major ...
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72 views

Kubuntu Xenial recommended Nvidia driver

I updgraded fro Wily to Xenial yesterday, and booted to a blank screen. I managed to drop to shell, and after some trial and error, and after installing nvidia-364 from graphics-drives ppa, disabling ...
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1answer
263 views

Can't access settings on fresh install synapse for kUbuntu 16.04LTS

I have been using instructions that can be found here for my 14.04 systems. But after running: sudo add-apt-repository ppa:synapse-core/ppa sudo apt-get update I get the following on kUbuntu 16....
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1answer
83 views

Installing Ubuntu on Acer Cloudbook 11

First question, all: Based on this thread, I tried installing Kubuntu on an Acer Cloudbook 11: Ubuntu installation on Acer Aspire Cloudbook 11 However, the granularity of the instructions is quite ...
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26 views

How do i find all clipboards on ubuntu and kUbuntu

I posted the following security concern in the security.stackexchange: kde system tray clipboard Note: This post is asking a different question. In response to finding that when I use the program ...
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1answer
418 views

kubuntu 16.04 SDDM login screen hangs

After upgrading from kubuntu 15.10 to 16.04, the login screen hangs right after typing the (correct) password and pressing enter. The controls like the text field are disabled and brightness slightly ...
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17 views

How to Fix This ACER/LINUX Hardware Problem?

HOW CAN I FIX THIS? Laptop=ACER ASPIRE 4540. OS(LINUX-kubuntu).
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18 views

Why have I only two avtivities types on Plasma 5?

After installing kubuntu 16.04 I have only two activities types in Plasma: desktop and folder view. Why? Is something missing in the system?
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520 views

Kubuntu 16.04 Discover search bug - Answer! [closed]

Because of requiring reputation, I post the answer of this question. To be able to see search results in Discover, open Konsole and type "sudo apt-get install muon". When finish installing, search ...
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1answer
387 views

after upgrade to 16.04 LTS rc.local not executing command

On previous installed version kubuntu 15.xx i added a line into /etc/rc.local > /home/diet/scripts/my-auto-mount-script which obviously referred to a script that if on home wifi network drives should ...
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1answer
66 views

kubuntu Xenial i386 and 8GB of RAM

I'm running kubuntu 16.04 i386 and have just installed additional RAM. It seems that 16.04 doesn't have pae kernel: E: Unable to locate package linux-generic-pae E: Unable to locate package linux-...
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1answer
311 views

Kubuntu 16.04 failed upgrade (problem with xserver-xorg-video-all?) [duplicate]

I'm trying to upgrade my Kubuntu Wily 15.10 computer but it fails. I'm doing this: $ sudo do-release-upgrade -m desktop This is what I get: Calculating the changes Could not calculate the ...
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58 views

Choppy Audio Playback With Clementine and VLC

Since I've installed Kubuntu 16.04 yesterday, music playback in VLC and Clementine started to be choppy. Starting to play a song, everything is fine for about 2 seconds until the stuttering begins ...
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27 views

kubuntu-desktop dependencies problem, now forbidden icon

A week ago, one of my friends said that the kubuntu-desktop is cool. So I installed it. But now there are dependencies problem with kde-telepathy-minimal, and the forbidden icon turned up and said ...
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95 views

Breeze icon theme wrong icons

I could not find this specific issue on Google. After I updated from Ubuntu 15.04 to 16.04 LTS, next to xfce4 and unity not working correctly, also the icons from the Breeze icon theme are behaving in ...
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129 views

Kubuntu 16.04: Suspend works only once after reboot

After upgrading to Kubuntu 16.04 (with default 4.4 kernel), suspending works only once after reboot. Second attempt fails, the screen goes blank, but the power remains on. After a forced reboot, I can ...
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1answer
16 views

Window image stays for forever in the workspace after closing it

The problem I've installed the latest Kubuntu 16.04, installed the latest release of Kubuntu, making a fresh install. Now, whenever a "secondary" window is closed, the image will stay forever. What ...
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1answer
309 views

Kubuntu Xenial upgrade - X11 error - “all shell packages missing”

I recently upgraded to Kubuntu 16.04 from 15.10. After the upgrade X windows doesn't start and I get dumped to a console window. When I log in I can execute a 'startx' but I get the KDE error "All ...
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27 views

Kubuntu 15.10 speakers get muted after 10 minutes

I have Kubuntu 15.10 with plasma KDE. Everything was working well, and at some point (I really tried hard to find out what exactly caused the problem) the speakers started getting muted. After the ...
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1answer
388 views

Screen Tearing on Kubuntu 16.04 with Intel Drivers?

So, quick background, on Kubuntu and have massive screen tearing issues. I have never had these problems on any other Linux Distros. Videos look really choppy, overall it's not a good experience. I ...
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15 views

Kubuntu doesn't want to connect to known networks anymore, only new ones

This problem happened all of a sudden, without an upgrade or so being done. I have had no trouble connecting to networks in the past. Since a few days ago however, I can't connect to existing ...
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5 views

Disable mail header in new message window

Always when I want to write a new message in Kmail a mail header section is included in the message box. How can I disable this? I can't find anything :(
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3answers
109 views

Remove “title bar” at top of chrome

I feel one of the biggest improvements with Chrome on Windows is moving the tabs all the way to the top to the screen (so the mouse can just go all the way up, then click). I went with the kubuntu ...
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39 views

How can I hide and protect devices in Dolphin (and other places in KDE)?

On most KDE file open dialogues and Dolphin, my devices (mounted and otherwise) are displayed as options. Clicking these convenient takes you to their mounted path (and mounts them first if they aren'...
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94 views

Wrong keyboard layouts

I want to be able to switch my keyboard layout between German and English (UK). As default I set it system-wide to English (UK, extended WinKeys), using sudo dpkg-reconfigure keyboard-configuration ...
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0answers
17 views

how to make Kubuntu widgets show correctly?

how to make Kubuntu widgets show correctly? here this is how it looks
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1answer
33 views

How to copy files from one directory to another after closing the Dolphin file manager in Kubuntu 16.04 LTS?

Please, I need your help with the following: The Problem: I can't copy/move one file (or more) from one directory to another unless if both directories are opened using the file manager. In other ...
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57 views

kwallet + gpg kubntu

I've installed kubuntu 16.04 and create gpg key. But when I try to create a new wallet with kwallet it can't find no one encryption key. I tried to create pair of keys with gpg and kgpg, in both cases ...
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29 views

How can I make Kubuntu access my Windows Phone?

I did a fresh install of Kubuntu. I have a Nokia Lumia 635 which is working on Ubuntu and Windows. Using Kubuntu,it gives this error:
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1answer
258 views

Dell 3543 Kubuntu 16.04 can't get output to 2nd monitor on HDMI

This worked with much fiddling on 15.10, but since upgrading to 16.04, I can't get the 2nd monitor working at all. xrandr -q Reports "HDMI1 disconnected" though it isn't. With open source drivers,...
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43 views

Kubuntu: Firefox and Thunderbird display generic icon for launcher

My system was installed with a Kubuntu 14.10, upgraded to 15.04 and now it's a 15.10. Both firefox and thunderbird have launchers in my 'task manager'. For both applications, I get the same generic ...
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1answer
119 views

How to reset Display and Monitor > Display Configuration > Scale Display

On upgrading to 16.04 from 15.10, my font size was tiny. Somewhere I found the suggestion to go to: System Settings > Display and Monitor > Display Configuration > Scale Display And change the ...
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130 views

Will kubuntu support snap packages?

Does Kubuntu 16.04 support snap packages?
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268 views

How do I fix black screen in kubuntu 16.04?

So I am trying to use the computer and all I get is a black screen. I don't know how to fix the black screen. Can you help me? I updated Kubutnu 15.10 to 16.04 and all I got was a Black screen. Please....
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25 views

Mouse clicks stop registering

If I stop using the mouse for the a minute the button clicks stop registering, I can continue to move the mouse but nothing happens when I click on some thing, any ideas what could be causing this? I'...
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110 views

How do I make panel background in Kubuntu 16.04 no transparent?

I want my panel to be black, with no transparency. In system settings, under the desktop theme details I have set Panel background to Oxygen. I thought that would be black background, but it is ...
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74 views

Problem with desktop manager after updating to 16.04

I just update my Ubuntu to 16.04. After restarting, I found that my desktop manager is not started. It just give command line interface. After I try to input kdestart (I have Kubuntu from previous ...
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1answer
387 views

distorted video playback with vlc in kubuntu 16.04

I recently installed kubuntu 16.04 on my laptop. Everything works fine except that i can't play videos with vlc player! the default player(Dragon) has no problem but when i open videos with vlc the ...
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139 views

Visual changes of the applications with root in Kubuntu 15.10/16.04

The problem is: when I start apps in Kubuntu with sudo or kdesudo, these apps change their visual themes and some of them are displayed with issues. As an example: Dolphin in normal mode: Dolphin ...
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6answers
1k views

akonadi services and mysqld use too much memory in kubuntu 16.04

I recently installed kubuntu 16.04 on my Dell studio xps 1640 that has 8GB of Memory installed. Everything is working fine but Something is really bothering me. After a fresh boot up, when i check the ...
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20 views

Sort local collection by album instead of by artist in Amarok

The default sort to your local amarok collection seems to be by artist, then by album. Can I change to sort order to be albums then artist? I don't want to rename or change the files in the collection ...
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0answers
14 views

Lost system after update

I know similar subject was in forum not once, but answers which I found did not solve my problem. I have Netbook Lenovo S10-3 (old and slow) I was using Kubuntu for a long time, but about 2 weeks ago ...
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1answer
421 views

Kubuntu 16.04 : Software centre search bug

I installed the new 16.04 kubuntu and I have problem with Discover - Software center. So these are the screen shot that I have made This is the first look you see that we have wrong aligned text, ...
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5answers
2k views

Kubuntu 16.04 Plasma can not start after fresh install

I have made a fresh install of Kubuntu 16.04 via USB stick. The sha256 checksum of the USB stick matched the one on the download page. All installed packets have their most recent version. I have a ...
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4answers
6k views

Kubuntu 16.04 Driver Manager broken

The driver manager is hanging on the "Collecting Information about your system" phase it's not progressing past this point. Is any one else experiencing this, if so are there any known fixes?
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1answer
3k views

Why isn't Hibernate in Ubuntu 16.04 working and how to fix it?

I have Kubuntu 16.04 64-bit installed on my HP Pavilion 17-f000 Notebook. I've tried the steps from the ubuntu 16.04 wiki, but the sudo pm-hibernate terminal command did nothing and creating the /etc/...