UbuntuHandbook | News, Tutorials, Howtos for Ubuntu Linux

Install VirtualBox Guest Additions for Ubuntu 24.04 VM

Last updated: September 12, 2024 — Leave a comment

This tutorial shows how to install the guest additions for Debian, Ubuntu, Linux Mint based systems that are running as Virtualbox virtual machine.

Guest Additions is an external package designed to be installed inside a VirtualBox guest OS. It enables closer integration between the host and guest OSes, including features such as shared folder, custom video drivers, seamless window mode, and more.

Guest Additions is not installed by default after installed your system as virtual machine. It’s however easy to install through the official CD image.

Ubuntu 24.04 Guest OS in VirtualBox

In Howtos Virtualbox

Scrcpy 2.6 Added Mirroring Android Audio Support

Last updated: August 7, 2024 — Leave a comment

Scrcpy, the free open-source Android screen mirroring app, released version 2.6 (then 2.6.1 with quick fix) a few days ago.

Scrcpy is an app works on Linux, Windows, and macOS, allowing users to remote access and control their Android screen from PC/laptop, either wirelessly through TCP/IP in same network or wired with USB cable.

It uses Android Debug Bridge (adb) to communicate with Android device. Nothing needs to be installed on Android side, but it needs to enable developer mode for USB debugging option which is required by adb.

In News Android, Android Remote Control

How to Encrypt An Existing Ubuntu 24.04 System

Last updated: September 6, 2024 — 5 Comments

This is a step by step tutorial shows how to encrypt Ubuntu, while preserving its data, after you installed it on your computer.

While installing Ubuntu 24.04, if you didn’t choose to use the entire disk, then there’s no graphical option to enable encryption. You can however manually encrypt the full Ubuntu system afterward.

So, on every boot of the Ubuntu system, it asks to input password to unlock boot entry (if /boot partition is also encrypted), then asks again to unlock disk partition before user being able to login.

it asks password twice to unlock boot entry & then root partition

In Howtos Disk Encryption, security

How to Install NVIDIA 560 / 555 Series Driver in Ubuntu via PPA

Last updated: November 10, 2024 — 2 Comments

NVIDIA Linux driver has reached 560 release series. Here’s how to install it or the 555 series in Ubuntu 24.04, Ubuntu 22.04, Ubuntu 20.04, and their based systems.

NVIDIA 560 so far is the latest new feature branch driver for Linux. It added support VRR (Variable Refresh Rate) on notebooks with the open kernel modules, as well as for Wayland on pre-Volta GPUs.

As well, there are multiple concurrent clients support to NvFBC direct capture, PipeWire backend to NvFBC, and EGL_KHR_platform_x11 and EGL_EXT_platform_xcb on Xwayland. See release note for more.

For NVIDIA 555, it uses GSP firmware by default on all GPUs that support it, which acts like a CPU embedded into the GPU that can offload GPU initialization and management tasks.

The 555 driver enabled HDMI 10 bits per component support by default. It also has better Wayland support. It now has less screen tearing, and supports linux-drm-syncobj-v1 protocol for explicit synchronization in EGL. For more about the new driver, see the release page.

In Howtos nvidia

Install & Setup RetroArch to Play Classic Video Games in Ubuntu 24.04

Last updated: July 30, 2024 — Leave a comment

This tutorial shows how to install and setup RetroArch to play classic video games, including Arcade, Atari, Commodore, Nintendo, Sony Playstation games, in Ubuntu PC or laptop.

RetroArch is a free open-source cross-platform front-end for emulators, game engines, media players, and other applications. It’s the reference frontend for the libretro API, that offers several uncommon technical features, such as multi-pass shader support, real-time rewinding, and video recording.

In Howtos game

Enable, Disable, Configure Firewall in Ubuntu 24.04 [Beginner’s Guide]

Last updated: August 5, 2024 — Leave a comment

This is a beginner’s guide shows you how to enable, disable, and configure firewall in Ubuntu using UFW.

Firewall is a network security system that monitors incoming and outgoing network traffic, and decides whether to allow or block specific traffic based on pre-defined security rules.

Linux Kernel has the Netfilter subsystem, which is implemented as a packet filter and firewall. Iptables (and nftables, the successor of iptables) is the user-level command line tool to configure the firewall by adding/removing netfilter rules.

Iptables (and nftables) is much more flexible but really hard for beginners. UFW (Uncomplicated Firewall), the user-friendly front-end for iptables, is which I’m going to talk about below.

Image by Pete Linforth from Pixabay

In Howtos firewall

Disable Update Notifier Indicator (Refresh Icon) in Ubuntu 24.04

Last updated: July 27, 2024 — Leave a comment

Ubuntu 24.04 has a new circular arrow indicator icon in top right system tray, when there are available system updates. By clicking on it allows to quickly launch Software Updater (Update Manager) tool for installing updates.

If you don’t like that indicator icon, here’s how to disable it, as well as stop checking for updates automatically.

Indicator icon reminding there are system updates

In Howtos ubuntu 24.04

Darktable 4.8.1 Released with Various Bug-Fixes [Ubuntu PPA]

Last updated: July 26, 2024 — Leave a comment

Darktable, the popular raw image processing software, released new 4.8.1 version few days ago.

This is the first minor release for the current 4.8 release series, which contains only bug-fixes. The release fixed the issue that export without high quality sampling but with up-scaling activated, crash when using the -d imageio option, and image jump if collection is empty.

There are as well fixes for importing/exporting issues, including large image exports due to a bug in finalscale module, JPEG2000 loading issue due to unspecified color space, and empty lighttable when importing from command-line. For more, see the official release note.

In News photo

Alpaca – New GTK4 App to Chat with AI Offline

Last updated: July 25, 2024 — Leave a comment

Want to chat with AI models locally without internet connection? Here’s a simple app can do the job in Linux Desktop!

It’s Alpaca, a free open-source application written in Python programming language. It uses Ollama as backend to manage and chat with multiple AI models, without needing any API keys.

By using GTK4 plus Adwaita toolkits, it provides a modern and simple graphical interface that’s well integrated into Ubuntu, Fedora Workstation and other Linux with GNOME desktop.

In App Review AI Chatbot, Ollama Client

Linux Mint 22 is Available to Download! Based on Ubuntu 24.04

Last updated: July 26, 2024 — Leave a comment

Linux Mint, the popular Linux Distribution for desktop PC and laptops, finally rolls out the new 22 major release images.

Linux Mint 22, code-name “Wilma”, is based on Ubuntu 24.04 LTS. It features Kernel 6.8, Cinnamon Desktop 6.2, and supports until 2029.

The stable release .iso images were rolled out few days ago on July 21 through the Linux Mint Community page. Most download mirrors have include the new .iso images in their websites.

If everything’s going well, the official website should update the download link and announce the release very soon.

In News Linux Mint

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