The official Ubuntu derivative using the KDE Plasma Desktop

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Unable to launch kwalletmanager

I'm using Kubuntu 15.04 and I'd like to launch KWalletManager to inspect my wallets. The problem is: when I try to execute the program no window shows up. Clicking through the menu or by searching in ...
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100 views

Run *ONLY* `/etc/acpi/powerbtn.sh` when power-button pressed, and not *ANYTHING* additional

I want to run a custom script when the power-button is pressed. For a simple test, I put only a single line in /etc/acpi/powerbtn.sh. That line creates a file it_ran.txt in my home folder. There is ...
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272 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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91 views

Icon theme is selectively applied after upgrade from kubuntu 15.04 to 15.10

This is easiest to see with the following screen shot. As you can see there are clearly two different icon sets being used. I have breeze set as my icon theme, but dolphin is using oxygen, not the ...
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92 views

Plasma 4 on Kubuntu 15.10

I installed Kubuntu 15.10 to have the latest and greatest in core functionality, however it came with Plasma 5...which although fast isn't what I'm looking for, visually or functionally. I had a ...
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13 views

Kubuntu 15.04 boot problem

I am new to linux. I had windows and kubuntu 15.04 in dual boot. Now I have decided to get rid of windows. I formated 2 of my hard drvives. I reinstalled kubuntu. But now I can't boot in it. I tried ...
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126 views

Kubuntu 15.10 stuck on boot logo

Since today Kubuntu 15.10 won't boot automatically any more. When I enter tty1, I get to the root console and can start the Plasma desktop manually by entering "startx".
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368 views

Wifi keeps getting disconnected on Kubuntu 15.10

I recently installed Kubuntu 15.10 alongside Windows 10 (Both on separate partitions.) Wifi keeps disconnecting and dropping packets when i'm running kubuntu. It runs fine on Windows 10. I'm using a ...
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90 views

I can't find the mimeapps.list file

i need to have mimeapps.list file on my system. But sinece kubuntu 15.10 i can't find it. This file is a freedesktop standart that link application mime type to existing applications. Why this file is ...
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328 views

Kubuntu stuck at boot 'mismatch in ips_enabled'

I installed Kubuntu recently, dual boot, other boot I run Windows 10, so today I installed the latest kubuntu, and today when i restarted it always did this on the screenshot, But since now It's just ...
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11 views

Reinstall Kubunttu

I have Kubuntu on a separate SSHD but on installation I'm not given the option of installing Kubuntu on it only the other larger Hds(3Tbs) The workaround, for me, was to disconnect all other HDs and ...
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39 views

Swap CapsLock and Escape feature disabled after some time

On a new install of Kubuntu 15.10 the "Swap CapsLock and Escape feature" seems to become disabled after some time, or after returning from suspend. This feature worked fine in all versions of Kubuntu ...
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52 views

/etc/pm/power.d settings ignored in kubuntu 15.10

I'm trying to improve power consumption in my laptop. I've took the suggestions from the awesome powertop utility, and put them in a script called: /etc/pm/power.d/10evert When I manually run the ...
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188 views

Kubuntu 15.10 widgets disappear(on boot and activity change)

I have a fresh install of kubuntu 15.10. I am new to kubuntu and linux in general, so I dont know if I am doing something wrong. So my problem is that my widgets disappear each time I reboot my ...
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77 views

Trying to enable wake on mouse/keyboard

I'm running Kubuntu 14.04 on a older Toshiba Satellite and as of right now, the only way to wake the computer up from sleep is pressing the power button. I am trying to get it so that the mouse or ...
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20 views

After installing Kubuntu in Virtual Box, I receive error

After installation and restart of Kubuntu, I get an error message in the post - smbus base unintialized, upgrade BIOS or change address. Does anyone know what could be wrong? The installation was ...
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18 views

kubuntu display errors (mainly chrome)

I just installed the newest version of kubuntu, and everything seems to be great except some graphical errors. This is mainly with chrome, which is updated, when I attempt to open the plug-in menus, a ...
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10 views

Question about doing lvm snapshot on rootfs

Is default ubuntu setup has all what it needs and readily configured for this? Or there's something I need to do before doing the snapshot? I read about lvm snapshot on some other distro Wiki and it ...
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248 views

after installing nvidia 340, my kubuntu 15.10's font looks bigger

Just as the title says, after installing nvidia and rebooting, all fonts in the launcher, date, and window's title looks bigger, but it only happens to the font, while icons and anything else seems ...
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24 views

Kubuntu 14.04 Upgrade button not working

I'm trying to upgrade my Kubuntu. The Upgrade button on the image below is not responsive. Kubuntu Software Updates screen From command line I get: $ sudo do-release-upgrade -d Checking for a new ...
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55 views

Kubuntu 14.04 no drivers found Qualcomm E1750

my problem is I have a Qualcomm E1750 USB 3G modem that is actually a Huawei E800 modem. ModemManager in Kubuntu 14.04 Reports it as a "Qualcomm Incorporated E1750", lsusb reports it as a Huawei ...
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473 views

How to upgrade to KDE Plasma 5 on Ubuntu 14.04.3 #2

Just looking for a followup to this thread without being scolded like a five year old. How to upgrade to KDE Plasma 5 on Ubuntu 14.04.3?
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14 views

Make applications open at the screen they have been placed before

I have three screens attached to my Kubuntu 15.04 PC. Every time I start an application (like Dolphin, KMail, Kate, etc.) the corresponding window opens at an arbitrary screen and/or in an arbitrary ...
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29 views

KMix: Show stereo channels by default

Is there any way to have KMix always show the stereo channels for playback devices and streams? As it stands, it's required to right-click the specified device/stream and select Split Channels, ...
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93 views

ThinkPad T450s undocking under Kubuntu 15.04

I'm running Kubuntu 15.04 on a Lenovo ThinkPad T450s Ultrabook with an Ultradock. I had no problems getting the dock to work, but undocking is presenting some issues. When I undock, the laptop ...
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71 views

I am trying to connect to Wifi from Kubuntu. But Kubuntu is not detecting the wireless device

I am trying to connect to Wifi from Kubuntu. But Kubuntu is not detecting the wireless device and in the connections pane, it is showing Wifi as in disabled mode. How can this be rectified..? I am ...
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28 views

What can I do? Reinstall Ubuntu

I was trying to move (delete) from Kubuntu back to Ubuntu. And now I can't do anything. When I turn on my laptop after the Thinkpad image there's nothing. Just a black screen. I mean I can use GRUB ...
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49 views

Reinstall Ubuntu 15

I was in Kubuntu, now I'm back in Ubuntu but I can only see purple in the screen , I mean I can't do anything only acces the GRUB. How can i download Full Ubuntu back?
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22 views

kubuntu language taskbar icon gone. can't change language via keyboard shortcuts also

I have Kubuntu 14.04. Today the language taskbar icon disappeared and the keyboard shortcuts Alt+Shift or Ctrl+Space does not work either. When I looked in the regional settings, I have seen that ...
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152 views

Installing hybrid amd/intel graphics driver on kubuntu

I've recently installed Kubuntu on my Lenovo g500 laptop that uses the good ol' switchable graphics. My problem is that when I install amd drivers using sudo apt-get fglrx Kubuntu won't go ...
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90 views

Ubuntu 15.04 getting a KDE-like theme after a recent update

I had upgraded to KDE a few weeks ago, but I did not like it as much so I reverted back to Ubuntu. I was having troubles with uninstalling the KDE desktop, but I somehow got it to work. Although a few ...
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48 views

Kubuntu 15.04 not mounting Canon 7D

I've looked around but no answers. This works on normal unity Ubuntu 14.04 but I can't see the camera in kde dolphin on 15.04. dmesg makes sense: kubuntu 15.04 [ 3154.107933] usb 1-1: new high-speed ...
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32 views

Problems with bluethoot headseton Kunbutu.

I have a bluetooth headset and i'm trying make him work. First of all I had installed ubuntu studio but seems to me that blues dont work at all,so i changed to kubuntu and i installed all ubuntu ...
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25 views

Pc doesn't start without internet

After I configured proprietary drivers (fglrx-updates and processor microcode) Kubuntu works only when there is an internet connection (Wi-fi or ethernet). Without it, I only see the logo "KUbutnu". ...
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89 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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58 views

USB stick not recognised Kubuntu 15.04

After formatting my usb stick to ntfs it doesn't get recognised (neither in Kubuntu 15.04 nor in windows 7) This is what I get when I run lsusb (with my usb stick inserted): Bus 004 Device 002: ID ...
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51 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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101 views

Upgrade to plasma 5.4 damages all kontact-related packages

I'm running Kubuntu 15.04 and I've just upgraded my plasma to 5.4, as described here. However now kontact, kmail etc. don't work anymore. I can setup the mail accounts but no email is shown. Moreover ...
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61 views

Wired interface (eth0) ppp failed to start Kubuntu

I have just downloaded Kubuntu. I run it in live mode and it doesn't connect my DSL connection. I have configured it as I did in previous releases. It shows the following error as notification in ...
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234 views

Cann't install Oracle Java on Kubuntu 15.04

I got a problem try to install Oracle Java 8 or 9. Note: I'm using the WebUpd8 ppa. Removing outdated cached downloads... sha256sum mismatch jdk-9-ea-bin-b78-linux-x64-19_aug_2015.tar.gz Oracle JDK 9 ...
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45 views

Kubuntu 15.04, loads desktop, but no interface

Thought I would give Kubuntu a try, apparently multi screen support is very good OOTB, which I was having all sorts of issues with on Ubuntu Anyways, if I 'Try' from a live USB, or if i install, get ...
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76 views

Kubuntu 15.04 freezez on wakeup

I have Lenovo Ideapad Flex 10 laptop with Kubuntu 15.04 on board. When I close the laptop's lid, OS normally suspends, but when I open the lid, the system shows black screen with the mouse cursor on ...
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23 views

Moving Icons to Panel

Cant move icon form launcher to panel in plasma 5 in kubuntu 15.04 like you were able to in kubuntu 14.10. Cannot drag and drop and there is no move to panel by right clicking on the icon.
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84 views

Kubuntu -> Chrome and Firefox Tab and bookmarks fonts are really tiny

How do you make them bigger? Things I did today. I had a monitor go black today, loaded nvidia management to correct this problem, also adjusted monitors via window management. Not sure if those ...
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61 views

Installed Kubuntu now Chrome and Firefox fonts are chunky

I installed Kubuntu/KDE on my 15.04 install to see what it was like, and now my fonts in Chrome, Firefox, Filezilla, VLC, and a few others are this KDE-looking squarish, blockier font. It's not like ...
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88 views

Why does my computer restart/log-out when I turn my tv off then back on kubuntu 15.04

My set-up is Asus eb1505 Intel HD graphics w/dual core Intel celron processor connected to a Sony Bravia HD TV. When running Windows 8.1 had no issues with turning power on and off to TV. After ...
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50 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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30 views

Kubuntu Wi-Fi problem

I have a HP desktop running Kubuntu 14.04. The first time I used it, it connected easily to the house WiFi. Now though, it keeps asking me for the password and won't connect. I got 4 notifications. ...
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98 views

Kubuntu 15.04 change login screeen resolution

I have 1280*1024 monitor. Login screen looks like for widescreen monitor and extended behind right monitor side. "Display configuration" doesn't affected this screen. Anybody knows how change ...
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97 views

Calligra 2.9 and/or KDE Plasma 5 for Kubuntu 14.04

Is there a ppa or .deb package to install Calligra 2.9 for Kubuntu 14.04? I tried following the instructions for 14.10 (using the Kubuntu Backports ppa), but only version 2.8 is available. Ditto for ...