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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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1answer
11 views

How to solve a temporary failure in name resolution error?

I've installed Kubuntu 18.04 on a desktop with an ethernet connection. During the installation, updates were downloaded and the internet was working fine. Once the operating system is installed, every ...
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0answers
29 views

Problem in Kubuntu while installing files… How to solve? E: Sub-process /usr/bin/dpkg returned an error code (1)

sudo apt install adobe-flashplugin Reading package lists... Done Building dependency tree Reading state information... Done adobe-flashplugin is already the newest version (1:20190212.1-...
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0answers
27 views

Tricking Slack into thinking you don't have multiple monitors

As far as I can tell there is no way to select a single screen to share in the Linux Slack app when you have more than one screen. So in my 3 screen set up, screen sharing is practically unusable. ...
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0answers
635 views

Issue while booting Kubuntu on VirtualBox: drm vmw_host_log vmwgfx error failed to send log

I have installed Kubbuntu as guest one virtualbox on Windows 10 and now when I want to boot it take a long time showing this message: [drm:vmw_host_log [vmwgfx]] ERROR Failed to send log What is ...
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1answer
97 views

Wifi downlink very slow with MSI B450 Gaming Pro Carbon AC

Today, I assembled a PC using the MSI B450 Gaming Pro Carbon AC as its motherboard. This motherboard comes with wifi. Already before installing Kubuntu 18.04, I noticed that the downlink is terribly ...
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1answer
24 views

Htop signals seem not to be sent on (K)Ubuntu 18.04

I am on Ubuntu 18.04 (Kubuntu), running through Konsole. I have a node process I can see in htop if I F4 and search for node. I highlight it and use F9 to send it a signal (tried SIGINT, SIGQUIT, ...
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0answers
36 views

Remote desktop(RDP) to Kubuntu 18.04 does not show application launcher

I am trying to access my Office PC(Dual monitor configured, access with citrix, behind a firewall) with "Remote Desktop" which is the only tool allowed. I can access my PC, but I only see an empty ...
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0answers
23 views

Strange static lines in Kate Editor

I'm having a strange issue with Kate under Kubuntu 18.10 where the lines displayed in the below screenshot seem to persist no matter what option it is I'm disabling. They are static and remain in the ...
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0answers
118 views

Avoid notification “kdeinit5 closed unexpectedly” in Plasma 5.14 when starting Dolphin

After upgrading Kubuntu from 18.04 to 18.10 and that to Plasma 5.14.5 through the "backports" PPA I am lucky enough to face almost no bugs, except annoying notifications saying "kdeinit5 closed ...
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0answers
39 views

Duplex printing on Kubuntu by default

When I was using Ubuntu 16.04, duplex printing worked like a charm with my Brother DCP-J4120DW. However, I switched to Kubuntu 18.04. This makes Okular the default document viewer and also my document ...
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1answer
132 views

Problems installing Ubuntu / Kubuntu 18.04 on new build computer

I build a new computer with Gigabyte B360n wifi motherboard (Bios F4), a I7 8700 and a Sapphire Radeon RX 590. Linux Mint KDE 18 Serena booted perfectly, and installed without producing errors in uefi ...
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2answers
59 views

How do I find the display number of the X server currently using the physical monitor / running in the active virtual terminal?

I'm in the process of making a x11vnc launching script that would fix the dreaded black screen that prevents you from using VNC until reboot. So far, I've managed to find a workaround by using the ...
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0answers
162 views

How to install Linux on an MSI laptop(Gl62M 7REX model) having 128GB SSD as primary storage and 1 tb Hard disk as secondary storage

I want to install Debian + KDE on my MSI laptop(Gl62M 7REX model) having 128GB SSD as primary storage(windows 10 installed currently) and 1TB Hard disk. I tried installing by disabling the fast boot ...
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0answers
20 views

1440p 120Hz over HDMI 1.4b with chroma subsampling

I have read that running 2560x1440 120Hz in "Y′CBCR with 4:2:2" mode would be able to feed my monitor over a HDMI 1.4b connection. How would I do this from Kubuntu 18.10 (kernel 4.20) while using ...
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0answers
39 views

Simulating UVC webcam from v4l2loopback stream

Is there any way to emulate a USB camera device (UVC) from my v4l2loopback stream at /dev/video0, so my linux can recognize it as a real USB device?
2
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0answers
31 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], ...
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0answers
21 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
45 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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0answers
63 views

Screen goes blank if I turn it off and then on without X server

I'm in the process of running some Machine Learning algorithm that needs all my GPU. As such I want to leave it running during the night with X server off as to let all the GPU RAM available to my ML ...
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0answers
30 views

Kubuntu upgrade to 18.04 and problem with USB printer and systemd

After an upgrade to Kubuntu 18.04 if I try to send a print to a usb printer, the printer doesn't work and in the log I get this message: systemd-udevd[4145]: error opening ATTR{/sys/devices/pci0000:...
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2answers
26 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
votes
1answer
55 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 ...
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1answer
41 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 &...
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2answers
211 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 ...
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0answers
44 views

Linux won't boot after GRUB?

I have a rather weird issue with my desktop. Today I got my new case and moved my setup over. However if I boot everything works fine (POST, Splashscreen, etc.) until GRUB tries to boot into GUI. As ...
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0answers
34 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 ...
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0answers
158 views

Large cursor in some applications but not others (KDE)

I've installed a fresh copy of Kubuntu 18.04LTS and have noticed that the cursor is very large in some applications (as pictured below) and normal in others (e.g. Firefox). How to get the cursor to ...
0
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1answer
53 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
43 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
3k 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 ...
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0answers
33 views

Assistance with SSD partitioning to dual boot Gecko Plasma Next and Kubuntu

I currently have Kubuntu installed on a SSD drive (128 gB) and I want to dual boot Kubuntu and Opensuse/Gecko Plasma Next. When I installed Kubuntu I allowed the intaller to use the entire disk and I ...
0
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1answer
57 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
1k 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. ...
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0answers
31 views

KMail: Sent mails land in “Drafts” instead of “Sent”

After upgrading from Kubuntu 14 to Kubuntu 16 I noticed some unusual behavior in KMail. When I sent an email it lands in "Drafts" folder, but not in "Sent". Is it a bug or can KMail be somehow ...
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0answers
139 views

KDE Plasma System Try no percentage battery

I cannot find the way to enable the battery to show percentage, I have no problems with the GUI and the battery is shown but I cannot see the status.
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1answer
362 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 ...
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0answers
328 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 ...
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2answers
358 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?
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1answer
787 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 ...
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1answer
54 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?
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vote
1answer
2k 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 ...
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1answer
1k 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
640 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 ...
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1answer
497 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 ...
4
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1answer
2k 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....
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0answers
88 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 (...
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1answer
263 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 ...
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1answer
161 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 ...
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0answers
399 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, ...
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1answer
30 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,...