Questions tagged [kubuntu]

Kubuntu is the official Ubuntu derivative using the KDE Plasma Desktop. Use this tag only for questions that are Kubuntu specific. Questions for Kubuntu are probably better asked at http://askubuntu.com/, the stackexchange site for Ubuntu.

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2
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0answers
183 views

Use audio output USB device

I have a Roland TD-30 drum connected using USB to my computer. The USB device support MIDI and audio input/output. Currently Linux does see the USB card. aplay -l shows: kaart 2: TD30 [TD-30], ...
3
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1answer
547 views

how do i map the cmd key to ctrl on kubuntu 18.04?

I'm using an apple mac keyboard and I'm trying to map the "cmd" key to the "ctrl key but not having any luck can someone advise? I've tried setting the keyboard model to apple macintosh but that has ...
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1answer
409 views

Delete volume group of HDD of which the name is the same as my main SSD's

I just bought a new computer with an HDD + SSD. I must've accidentally encrypted the HDD it during installation, although I am sure I did undo it, but here it is, encrypted and even if I put the ...
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2answers
30 views

List/find the programm(s) that has accessed (in the past! No fuser!) a specific given file (IOW: from a specific file 2 an unknown tool)

I have a javascript file that is used on just one occasion -> if the home folder is deleted and i login the next time. I want to find the mechanism/tool/programm/application which has accessed/used (...
2
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1answer
483 views

How can I stop windows re-positioning after waking up monitors?

I have a laptop with multi-monitor setup, one is HDMI and the other is VGA. I have the energy saving setting set to dim screen after 5 min and switch screen off after 10 min, with suspends set to ...
0
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1answer
100 views

Empty man pages after upgrade to Kubuntu 18.04

When I run the command $ man ls all it shows me is Manual page ls(1) line ?/? (END) (press h for help or q to quit) and after pressing q man: command exited with status 4: (cd /usr/share/man &...
0
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2answers
414 views

Update from Kubuntu 16.04 to Kubuntu 18.04

I want to update from Kubuntu 16.04 to Kubuntu 18.04. I googled a bit and found the command kdesudo "do-release-upgrade -m desktop -f DistUpgradeViewKDE". But after I typed this into the konsole, I ...
2
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0answers
40 views

Disabling monitor when is turned off/in standby in a multi-monitor setup

I have a dual monitor setup. The problem is that 50% of the time I don't need my second monitor, and as such I will "turn it off" (i.e. press the power button ⏻) which results in the screen going in ...
0
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1answer
255 views

How to sync computers

I would like to have my desktop and my laptop synced i.e all programs and files should be at both places. Generally only one of the devices are active at any given time. It would be nice to be able to ...
2
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0answers
65 views

Linux USB stick shows white noise screen on machine with AMD graphics card

I installed Kubuntu 18.04 on a flash drive (I had 2 flash drives, one with the installer ISO from which I installed linux onto the other one) on a machine with an NVIDIA graphics card (GTX770, i7 ...
2
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1answer
7k views

Errors were encountered while processing: /var/cache/apt/archives/linux-image

Cannot update my system: $ sudo apt-get upgrade Reading package lists... Done Building dependency tree Reading state information... Done You might want to run 'apt-get -f install' to correct ...
0
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1answer
285 views

Installing a fresh OS on an old /home

I was considering changing from Ubuntu to Kubuntu (I just think it looks pretty!)...I created a separate partition for /home when I set this up so when I install Kubuntu after removing Ubuntu how much ...
2
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1answer
2k views

Kubuntu 18.04, cron task does not load @reboot

I am running Kubuntu 18.04, and have a simple script to reset the plasmashell every time after suspend/lockscreen since there's a known bug that corrupts folder/file names upon returning from suspend. ...
3
votes
1answer
989 views

Can't install a package with 'revision number is empty' message

In Kubuntu 17.10 I had SafeQ client installed for printing management. I needed to install two deb packages, libcrafter_0.0.2_all.deb and ysoft-client_4.0-87_all.deb from here. However, now in ...
0
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0answers
767 views

Delete/add/replace pages in PDF while preserving bookmarks [duplicate]

Is there an easy CLI method to do that? If I use pdftk, I get a new pdf without the bookmarks of the original one. The bookmarks were created on another system with Adobe Acrobat Pro, and an example ...
2
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2answers
814 views

Kubuntu Alt+Tab Task Switcher ignores its own setting & refuses to page through in reverse

Here's a screenshot of the seemingly relevant settings. Alt+Tab (Forward) works; Alt+Shift+Tab (Reverse) does nothing. Any suggestions for a fix or where exactly I should direct a bug report?
3
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2answers
3k views

“New messages” count for Thunderbird on Taskbar

I would like to see the "new messages" count number on my taskbar, like Google Mail, for example something like: Inbox(2) - Mozilla Thunderbird I found FireTray, but it doesn't quite work, the ...
0
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1answer
111 views

My splash screen changed from kubuntu to lubuntu

So my splash screen changed from kubuntu breeze to lubuntu splash screen. How can I fix this? This happened ever since I installed lxde, but not lubuntu-desktop. How did this happen?
5
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3answers
5k views

LAPACK make fails: “recipe for target 'znep.out' failed” error

My main problem is getting this error: Makefile:463: recipe for target 'znep.out' failed after running make I was trying to install GPAW (g Projector Augmented Wave method, for DFT simulations) on ...
0
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1answer
4k views

Install Fortran 90 compiler in Kubuntu

I am trying to run a package that strictly depends on Fortran 90, but after running its ./configure file it shows the following error: configure: error: could not find Fortran 90 compiler There are ...
2
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1answer
2k views

kdeinit5 starts background konsoles with high CPU usage

I am using KDE Neon LTS 5.12, sometimes, for some unknown reason, I can see a high CPU usage that comes from started konsoles by kdeinit5. Every konsole has no window and uses up to 17% CPU ...
0
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1answer
658 views

Reducing mouse sensitivity on Kubuntu 17.10

I was forced to upgrade to Kubuntu 17.10 from 17.04. This has the unfortunate side effect that my "Logitech USB Laser Mouse" is super sensitive again. In the past I've used the instructions in ...
9
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1answer
6k views

How to deal with freezes caused by autofs after network disconnect

I mount four servers (3 via cifs, 1 via sshfs) using autofs. auto.master /- /etc/auto.all --timeout=60 --ghost auto.all /mnt \ /server1 -fstype=cifs,rw,credentials=/etc/.smbcredentials....
2
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0answers
233 views

kde5/plasma5/kubuntu: how to list kreadconfig5 all available config groups

I’m new to KDE5/Plasma5. I’ve recently installed Kubuntu 17.10 am came from Gnome 3. I’d like to list all available config groups (not to confuse them with user groups). In Gnome 3 I used gsettings (...
0
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1answer
613 views

coil whine on kubuntu when idle

My pc has Kubuntu 17.04 and windows 10 setup with dual boot. When i boot to kubuntu as soon as the login screen shows i hear high pitch coil whine sound from my pc. I disabled all the power states ...
1
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1answer
173 views

What is the rationale for KDE's Neon project?

I read the KDE Neon FAQ and I simply don't understand the rationale for its existence: If the KDE people wanted to provided better/nicer/more up-to-date KDE-related packages, they could just provide ...
0
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0answers
825 views

How to fix VeraCrypt causing terrible lags?

When making a backup to a VeraCrypt encrypted container, my PC got to a point when it was unusable - every few seconds freezes for several seconds, sometimes "only" applications are unresponsive, ...
0
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1answer
33 views

Update ssh for Kubuntu 14.4

I am using Kubuntu 14.4 and have $ ssh -V OpenSSH_6.6.1p1 Ubuntu-2ubuntu2.8, OpenSSL 1.0.1f 6 Jan 2014 installed. I have trouble to log in into some servers I need to get into and the support thinks,...
1
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1answer
853 views

No color in terminal on KDE

I have no colors in my terminal on KDE Kubuntu 16.04.1. here is my .bashrc (I copied it from an Ubuntu-Server 16.04.1 but I always used this one also on former KUbuntu 12.04.) # ~/.bashrc: executed ...
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0answers
617 views

Kubuntu 17.04 booting into tty1 instead of GUI

My Kubuntu 17.04 is booting into tty1 instead of GUI. When I reboot while the machine is running, everything works fine. I can also switch to the graphical interface but it starts in tty1 for most of ...
1
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0answers
111 views

Google Chrome is hidden. Available on %1(I18N_ARGUMENT_MISSING

I have Google Chrome, and it doesn't appear when launched. I can see it in the bottom panel, but it isn't anywhere on screen. My thought is that it was apart of an activity that got deleted, and KDE ...
2
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2answers
6k views

How to use virtual serial port without root privileges?

Background: I want to use this Wifi-to-Serial adapter to control a telescope via Stellarium running on Kubuntu 16.04 (64 Bit). I'd created a virtual com port using socat with this command line: $ ...
1
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2answers
76 views

Why do I get remove used apps?

I installed Debian 9 with KDE. When I try to remove, install, or upgrade a package I got the following message: $ sudo apt upgrade Reading package lists... Done Building dependency tree Reading ...
0
votes
1answer
155 views

Password incorrect when using SSH with public/private key

I enabled logging to my remote Kubuntu computer with a public/private key following this short tutorial, and now logging is easy and doesn't ask for password. Anyway, I noticed when I try to sudo, I'...
3
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2answers
15k views

What are the system requirements for KDE?

KDE.org promotes Plasma Desktop as "fast and efficient", but there is no relevant information given in order to have such experience. The web content is now entirely changed (2019), but was seen until ...
1
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0answers
380 views

Configure Yakuake Terminal Separator Color?

I am using KDE 5 with Yakuake as my drop-down terminal, on Kubuntu. I am now encountering a documented bug, which is that the separators between multiple terminals only show on a black background. ...
1
vote
1answer
270 views

How can I correct errors in the KDE Start Menu/Launcher?

For whatever reason, whenever I try to launch Google Chrome via the KDE Start menu, I get this error: KDEInit could not launch '/usr/bin/google-chrome-beta' The thing is, I don't have google-...
4
votes
1answer
344 views

How to toggle audio between PC and TV set?

I created a script that toggles audio output between PC and TV set connected via HDMI. It looks so: inactive_sink_id=$(pacmd list-sinks | grep -E "[^*] index: [0-9]+" | sed -r -e "s/.*([0-9]+)/\1/g") ...
1
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0answers
250 views

Mount two same usb device Always in the same port UBUNTU

need to mount two device (identical/equal) at the same port...not difficult but look this: /dev/input/event6 - Sycreader_RFID_Technology_Co.__Ltd_SYC_ID_IC_USB_Reader_08FF20140315 /dev/input/event2 - ...
1
vote
1answer
57 views

KDE's run command is broken when using multiple monitors

When running run command (shortcut or from desktop menu) it only works on one monitor. On all other monitors no window is shown (it is working, "just" window position seems to be broken, when I don't ...
1
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1answer
3k views

Install AMD HD 6400M / 7400m drivers

How to install AMD drivers for above mentioned graphic card in Kubuntu 16.04 LTS Here is the info that may be needed to help. vasu@vasu-PC:~$ sudo ubuntu-drivers devices [sudo] password for vasu: ==...
3
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0answers
314 views

How to change the width of tasks in taskbar?

I am using Kubuntu. I am interested in changing the width of tasks in task manager but didn't see it in 'Task Manager Settings', Is there a config file for this or how to do it anyway?
8
votes
1answer
1k views

Why is Linux kernel killing processes when it has 14GB free memory, and how to fix it?

Output of free showed that my applications only use 2GB, swap was not used at all. Yet my applications were being killed (Skype, Firefox, Thunderbird). I watched it on htop and it looked like they ...
1
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1answer
779 views

kubuntu 16.04 plasma widget on panel - icon

Kubuntu 16.04. I want to run custom application/command (wine running windows app). In 14.04, I could just drag any application and edit icon settings (command + icon). Now when I right click any ...
4
votes
1answer
1k views

Desktop Linux distro that is laptop friendly (w/ docking station with 1x VGA and 2x Display Port)

I have a laptop + docking station with 1x VGA and 2x Display Port (1 converted to DVI, 1 native DP) outputs on it. When docked I want it to use the 3 external displays and have the onboard display ...
0
votes
1answer
129 views

LSI MegaRaid Controller - Switched OS's

I originally installed the MegaRaid Controller on Windows. I switched to Kubuntu and now I'm having great difficulties getting the raid setup recognized. I don't really need the raid (Just the ...
1
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0answers
47 views

How to recover system when wrongly entered command? [duplicate]

I wrongly entered chmod -700 /. My entire system collapsed. All applications shutdown automatically. Then I restarted my computer. I could no longer login. What happened, and how can I fix it?
0
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0answers
583 views

Overheating/high CPU usage by Windows VM

I am running Kubuntu 14.4 as a host and windows 7 in a VirtualBox. The later is using ~30% of my CPU and overheats the CPU to 94°C. This does not seem healthy. What is going on here and how can I fix ...
1
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0answers
10 views

Konqueror randomly showing same search results

In Konqueror I use startpage.com as searchengine. Recently I began to notice that no matter what I search for the searchengine is randomly showing the same results page. I clean the cache at every ...
2
votes
1answer
3k views

Wireless problem with Intel WiFi Link 5100

I'm using Kubuntu and I've problems connecting to Wifi since I tried to update the system a week ago. I tried installing drivers several times but nothing changed. Now I'm trying again with a fresh ...