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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34
votes
5answers
29k views

How to get near-perfect screen recording quality?

Someone suggested I direct a copy of the unmodified X display to a file and afterwards convert that file to a general purpose video file. What commands would I use to do this on a Kubuntu system? (...
21
votes
4answers
27k views

What is gvfs and why should I want it on my system?

What does gvfs do for me on my Kubuntu machine and why is /usr/lib/gvfs/gvfs-gdu-volume-monitor eating so much CPU time? BTW: I read https://en.wikipedia.org/wiki/GVFS and still don't know what's in ...
15
votes
5answers
31k views

ssh-agent not getting set up (SSH_AUTH_SOCK, SSH_AGENT_PID env vars not set)

I set up a new user account for a friend on Kubuntu 12.04. When he uses ssh he gets this error: Could not open a connection to your authentication agent We're running ssh in some bash scripts. ...
14
votes
2answers
52k views

Repairing python setup

On my Kubuntu 14.4 (which has python 2.7.6 as standard) my python is broken after I tried to install python 2.7.10 after building from source from python.org with the help of How to install the latest ...
12
votes
1answer
7k 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....
10
votes
2answers
11k views

How to restart KDE window decorations without loosing the running X session

For graphics editing of some special graphics formats I am using a java program called imagej. This has the annoying bug that one special function tends to kill KDE's window decorations if it has too ...
10
votes
2answers
3k views

Opening links outside of broswer in kubuntu opens html from local kde cache only

I have this odd problem where whenever a link is opened from the shell, the cached html is opened locally, instead of through a browser. to illustrate: if I run the command xdg-open http://www....
10
votes
3answers
2k views

Turn off Caps lock when Escape is pressed

Is there any way to disable CapsLock whenever Esc is pressed. Yes, I use VIM! I actually have an alternative all-caps keyboard layout on Ctrl-6 but I find it cumbersome and would prefer to just have ...
9
votes
3answers
20k views

Ideas how to get my usb audio interface to work with Linux?

PulseAudio does not appear to recognize the Focusrite Scarlett 6i6 USB audio interface. The 2i2, however, is properly recognized and it works as expected. I can't seem to get the 6i6 to work on the ...
8
votes
1answer
2k 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 ...
7
votes
3answers
70k 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 ...
6
votes
1answer
8k views

How to increase font size in KDE?

I have increased the font size by going to System Settings -> Font. This changed it for some applications like Konsole and File explorer. But this doesn't reflect in other applications like Firefox ...
6
votes
0answers
6k 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 ...
5
votes
3answers
6k 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 ...
5
votes
2answers
10k views

How to install listings package in Kubuntu for LaTeX?

I installed LaTeX on my Kubuntu with those commands: sudo apt-get install abntex sudo apt-get install texmaker sudo apt-get install texlive-latex-base texlive-latex-extra texlive-latex-recommended ...
5
votes
2answers
19k views

NVIDIA driver upgrade failed

I downloaded the latest(331.49), tried to install, but failed. I compiled the kernel module and at the end of the installation it said that it went successful. But on bootup it said: version mismatch, ...
5
votes
0answers
1k views

systemd-shutdown[1]: Failed to finalize DM devices, ignoring

Each time I reboot my laptop, that's running Kubuntu 20.04, I see this message right before it reluctantly reboots: systemd-shutdown[1]: Failed to finalize DM devices, ignoring Also, rebooting takes ...
4
votes
4answers
4k views

Kubuntu 20.04 Shutdown/Reboot Hangs At “Waiting for process: crond”

I'm running Kubuntu 20.04. 3 out of 4 times when I shutdown or reboot, it hangs at: Reached target Reboot. systemd-shutdown[1]: Waiting for process: crond I've spent a fair bit of time googling, ...
4
votes
2answers
2k views

Set the time of notifications in Plasma 5

The notification popups stay too long on the screen in my opinion. How to modify the number of seconds notifications are displayed? I see no such option in any of the notification settings. (...
4
votes
1answer
1k views

krusader - single queue instead of multiple queues

I need to copy a whole bunch of files from various directories onto an external drive. I thought Krusader might be the best tool for this job. As I select and copy different files, a new queue ...
4
votes
1answer
2k views

Replacing Multiple Debian Packages from Compiled Source

I've had to download and install a version of a library from its source code repository. The problem is is that other packages from the Kubuntu package manager require this library to be installed. ...
4
votes
2answers
613 views

keyboard layout is disabled in kde

I have kde Neon ~ ? screenfetch `..---+/---..` saeb@saeb-fujitsu `---.`` `` `.---.` OS: KDE neon 5.17 .--.` `` `-:-. ...
4
votes
1answer
370 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") ...
4
votes
0answers
365 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?
4
votes
1answer
2k 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 ...
4
votes
0answers
772 views

How can I crop a 1920x1200 monitor to 1920x1080?

I have just purchased a 1920x1200 monitor, and have some situations where I want to force the output to the more common 1920x1080. However, I don't want to distort the output, and would prefer a "...
4
votes
0answers
1k views

How to properly configure GRUB settings from KDE System Settings

I'm using Kubuntu 12.04 with KDE 4.10, and I recently installed the kde-config-grub2 that places a nice Grub configuration panel into KDE System Settings. I played around a bit, more for learning how ...
3
votes
3answers
2k views

Dead (compose) keys not working in GTK apps since upgrade

I'm running Kubuntu with KDE as my main desktop environment. A while ago I set up dead keys so I can type Chinese pinyin and other accented letters and special characters. As a side note, I use IBUS ...
3
votes
3answers
4k views

Increase System Tray Icon Size in KDE

How can I increase the size of these System Tray Icons? :
3
votes
1answer
1k 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 ...
3
votes
2answers
1k views

How to open a program as another user inside a logged display?

I'm trying to open netbeans as a different user, but isn't working. I'm running a Kubuntu 12.04 LTS with KDE. And I tried the following: Open a terminal, type su - myotheruser, type the myotheruser ...
3
votes
1answer
4k views

Can't mount RAID after upgrade

I just upgraded my box to 14.04 and on bootup I got a message, that my RAID devices can't be mounted automatically so I chose to skip it and work through it after boot time. Now booted up, A mount -a ...
3
votes
1answer
4k views

Dynamically change /etc/hosts

Each time I change my IP address I have to go edit /etc/hosts and change the line: myPc-Vaio 192.168.1.x I need this change for some programs I am using, so I can't just set the line to 127.0.0.1. ...
3
votes
1answer
793 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 ...
3
votes
2answers
19k 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 ...
3
votes
4answers
14k views

How to display a (zenity/GUI) dialog to the user after a root cron task has completed

I have a simple periodic cron task that must run as root. I want to use Zenity (or similar) to display a GUI informational dialog to user 1000 (or logged in user or all users) when the cron task ...
3
votes
2answers
4k 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 ...
3
votes
1answer
2k views

KDE - Problem with dark themes

Hello there Linux super users, I have a slight problem with my KDE Plasma 5.4 setup running on Kubuntu 15.10. Whenever I select a dark theme (in this case: KArc, the problem is the same for Breeze-...
3
votes
4answers
4k views

Dual boot - Kubuntu and Windows 8 - how to?

I recently installed Windows 8 on my computer. These are the specs: Fx-8150 CPU 8 GB RAM ATI HD7870 120 GB SSD 2 TB HDD Mainboard: Gigabyte GA-970A-UD3 (rev 1.1) (only bios but EFI mode possible for ...
3
votes
3answers
672 views

Linux Mint 14.1 not bootable because of “secure boot”

I'm trying to install Linux Mint 14.1 on my Lenovo B570, but when I try to boot the thumb drive, it displays a message: "Secure boot is not enabled" and then goes black screen. I read lots of posts on ...
3
votes
0answers
308 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 (...
3
votes
0answers
117 views

Directing sound output for specific applications

I'm trying to direct the sound from Youtube running in Opera to my sound card's HDMI output (to a TV), but still have all other OS sounds go to my PC's "Built-in Audio Analog Stereo" playback device. ...
3
votes
0answers
133 views

Automatically restarting process in the X server

I would like to know how to have a process that starts with the X server and automatically restarts when it stops running. I am running Ubuntu 14.04 with a KDE 4.13.3 desktop. I am running the ...
3
votes
1answer
1k views

How to customize logout options under Kubuntu

I'm running a machine with Kubuntu and Windows XP in dual-boot. I recently learned about the very useful grub-reboot command, and id like to know if it is possible to customize the logout options (...
3
votes
3answers
5k 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 ...
2
votes
2answers
7k 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: $ ...
2
votes
1answer
82 views

Isn't /boot a separate mount?

My understanding is that /boot is being accessed by lower level tools (e.g. grub) during system startup and so it is formatted specially in a simpler format than the rest of the disk. But when I do: ...
2
votes
1answer
2k views

WiFi not working Kubuntu 20.04 - Intel 8265 Network Interface

I have a problem with my WiFi card on Kubuntu. Sometimes the system doesn't recognise it, but what is strange is that it doesn't happen everytime, but just about one boot on four, and I can't ...
2
votes
1answer
13k views

Make a “java -jar file.jar” run at startup

Hello I am running a kubuntu 13.10 distro, but I guess my question is pretty general...how to make a .jar execute in background at system start?
2
votes
1answer
2k views

Resume from hibernate fails after image restoration

I've been trying to get hibernation to work, and am having problems. The system seems to go into hibernation just fine, but when I try to restore from disk, the process stops just after a message ...

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