This listing collects desktop notes applications including sticky notes that we recommend for Ubuntu 24.04 Noble Numbat. We included here KNotes, which are well-known and full-featured, and also Affiche.app which just works but less-known, among others in order to promote them to more users (and open the opportunity for more people to get involved in the project). All applications are available in the official repository and no third-party sources required. Now, let's start exploring them!

  

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This tutorial will help you using silver, metallic theme "Oxygen" that was popular in the era of KDE 4 on the modern Kubuntu 22.04 "Jammy Jellyfish". In short, we will use Elarun as wallpaper and Oxygen as the rest of the whole themes including application style, colors, icons, Plasma style, and splash screen. All in all, we want to offer the best visual experience we had in the past to new generation of Kubuntu users as well as the long time users themselves especially those who appreciate nostalgia. Finally, we hope you will enjoy this!

This tutorial will help you protect your data and GNU/Linux filesystem on a battery that is not in 100% health anymore by re-adjusting low battery power warning on Kubuntu. By doing this, your system will show a notification of low battery at your choice for example at 55% is warning and 50% is critical and do something like shutdown automatically if that happens. We wish you the best!

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This tutorial will help you adjust cursor size on Kubuntu KDE. This is useful for people like teachers and those with vision impairments and you can help them by exercising simple procedures below. It is a continuation to our tutorials in same configuration for MATE and GNOME users respectively. Now let's try it out.

 

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When you receive PDF files in Telegram Desktop, you might be disappointed when it opens in the wrong application not in your PDF reader. For example, in Kubuntu, it wrongly opens PDF with LibreOffice Draw, while it should be Okular. In other cases, it may instead opens PDF with web browser. We will show you how to fix this issue quickly. 

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This is a list of Free Software Desktop Systems, like KDE and GNOME the desktop environments, and like Kubuntu and Ubuntu the operating systems, and whether one is available as a complete computer to purchase. In this article, you will find useful information and further readings about the user interface choices available on GNU/Linux and BSD computing platforms. This will be used further on UbuntuBuzz.com to accompany every desktop related explanation.

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It is exciting that now big software projects are using GitLab for their own development. Debian, the universal operating system, and KDE, the best computer user interface plus applications compilation, and also Trisquel, the completely free software computer OS are among them. You can click those mentioned links to get involved in the software developments. It is certainly a good news as it is good example for the other projects in sovereignty of the infrastructure (borrowing Trisquel's terms). I made this article after the Rocky Linux's one as I just realized how important it is. However, as an addition it is also good if there is a project maintains their own Gitea (instead of GitLab) infrastructure as both are certainly libre software. I wish the best for them all!

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This article is licensed under CC BY-SA 3.0.

First time encountering Free Libre Open Source Software? First time using GNU plus Linux computers? Want to get friends and supports? want to know more about software freedom? Join our community -- the Free Software community. In this list you will see biggest discussion forums in form or web forums, mailing lists, etc. Once again, I don't make distinction whether each forum is official or not. This is a short version of my old longer list (see here, see here) so you can immediately see and join!

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KOrganizer is a colorful and useful calendar application for computer. For years, it helps me schedule my works, teaching, and personal life and also reminds me for important appointments so I won't forget any task I should do. It works offline and can also work with online calendar services you have. After I wrote many articles about it before, now I want to sum them up in a simple yet thorough overview of this awesome tool. Thanks to all KOrganizer developers I could reach up to this point with it. Let me share with you, it is fun! I believe you will also love scheduling after reading this. Happy scheduling!

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Framagenda (www.framagenda.org) is a gratis calendar online service comparable to Google Calendar and Fruux. Framagenda is a free software-based service by the famous Framasoft organization that is hosted using Nextcloud. In this tutorial I will show you how to synchronize your Framagenda account with KOrganizer desktop calendar on GNU/Linux. The result is so you can work everywhere with calendar both in desktop and web (including mobile) and you can share your online calendar to be seen by friends. Okay, let's go!

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Neon GNU/Linux recently gained more popularity and it is good to start Qt5 application development on it because Neon is an operating system built upon both latest Qt and KDE. With Qt5, you can create perfect and cross-platform GUI applications working on GNU/Linux and other OSes. Qt5 development here uses C++ language by default and gives you advanced user interface designer. And with Neon you can easily install and update latest Qt Software Development Kit (SDK) to support your development. This setup tutorial includes the IDE, framework (libraries), C++ compiler & debugger, complete documentation and examples, as well as other necessary programs. If last January I presented you Neon for Designers, then now is the time for Neon for Programmers. I hope this tutorial helps every new programmer in Qt. Happy hacking!

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Dolphin is file manager from KDE we can compare to Nautilus from GNOME. Dolphin has a lot of features Nautilus doesn't such as internal terminal and split vertical. Not to mention, unlike Nautilus, it supports a lot of third-party plugins like my 2016' Right-Click Batch Converter. In case you wish to change your file manager to Dolphin instead of Nautilus, but without removing any one, here's the way. I wish your life will be easier with this.

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Straight to the point, the final command line is this:

$ sudo umount -v /dev/sdb?* && udisksctl power-off -b /dev/sdb

Fortunately, you can make shortcut to that long command to be, for example:

$ magic

Explanation goes below. 

There are only 3 steps.

On KDE, more precisely on Dolphin File Manager, press F4 key so you see Konsole appears on its bottom:


To understand the command, we learn first where is the location of our partitions:

$ lsblk

 

Second, we unmount all attached partitions of external hard disk:

$ sudo umount -v /dev/sdb?*

Third, we safely remove the disk drive:

$ udisksctl power-off --block-device /dev/sdb

The final result should present you all partitions disappeared and lsblk shows /dev/sdb no more.


Example above given by considering /dev/sdb as the external disk drive we want to unmount. If lsblk output shows you it's not /dev/sdb but /dev/sdc instead, then use /dev/sdc. And so on.

See? Nothing hard.

Important notes explained below.

• 1) GNU/Linux OS reads every disk drive attached in special identifier, like, /dev/sdb or /dev/sdc. To know them, use lsblk command. 
• 2) The OS reads every partition with number following its disk drive identifier, like, /dev/sdb1 or /dev/sdb2, which is a partition inside /dev/sdb disk drive.
• 3)  
• 4) The umount and udisksctl commands work with special identifier of partitions and disk drives, respectively.
• 5) The -v option of umount command means verbose that is to show the process currently being done. 
• 6) The && sign means making a combination of two commands.

Making short version described below.

To make such long command short, you simply need to create an equation, that is in the .bashrc file of yours. Please be aware that this example is limited to /dev/sdb only, so this is not perfect, and you are free to learn more about this.

1) Edit it with editor:

$ nano ~/.bashrc

2) Scroll down.

3) Write this as new line at bottom:

alias magic="sudo umount -v /dev/sdb?* && udisksctl power-off -b /dev/sdb"

4) Save:
Ctrl+O

5) Exit:
Ctrl+X

6) Try it out:

$ magic

Enjoy!

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This article is licensed under CC BY-SA 3.0.

Imagine your laptop's left speaker is broken so every time you play something you hear noisy sound although the right speaker is normal. Then, you want to disable or reduce left speaker's volume while retaining the right one. On KDE system like Kubuntu, I find no such configuration on either its System Settings or Sound Volume tray. In fact, my left speaker is actually broken now so I need control for both of them on Neon GNU/Linux. Fortunately, I managed to do so installing PulseAudio Volume Control. The procedures are simple:

1) Install the tool:

$ sudo apt-get install pavucontrol

2) Run PulseAudio Volume Control.

3) See Output Devices tab.

4) Click shield button on top-right corner, so you see two sliders: Front Left and Front Right.

5) For example, I reduce the Front Left slider to 14% but let the Front Right 100%. This way, I can hear normal playback sound once again by using only the Right Speaker.

6) Try to play audio.

Happy working!
 

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This article is licensed under CC BY-SA 3.0.