What’s New in Ubuntu 22.04?

Ubuntu 2204

Ubuntu is used globally in data centres and powers your favorite cloud apps, offering built-in security and long-term support of five years or more.

GNOME 42 features some major visual changes for an improved desktop experience. Applications have become lighter while dark themes are now an option within settings. Dynamic Tripple Buffering technology has also been added for better performance.

GNOME 42

With GNOME 42, the popular desktop environment receives a new dark mode and an entirely reworked screenshot workflow. Furthermore, numerous settings panels have been improved and many default GNOME applications upgraded to GTK 4 with next-gen features via libadwaita support.

UI changes may be subtle, yet noticeable. On GNOME Shell desktops, theme tweaks have been implemented that aim at tightening up and simplifying UI elements such as applet pop-overs. Rounded corners have also been eliminated and triangles used as “call outs” have been eliminated by simply inferring it within the top bar.

A new screenshot UI makes it much simpler to take screenshots or record videos of entire desktops or single windows, or record anything specific using keyboard shortcuts. Plus, you can even create videos of your screen that can be shared online using keyboard shortcuts!

GNOME 42 brings with it numerous improvements for users of its Files app, including a scrollable path bar and enhanced renaming functionality. There are also other notable updates:

GNOME 42 will soon become available in most Linux distributions’ stable software repositories, with rolling-release distros such as openSUSE Tumbleweed and Arch Linux being among the first to receive it. In addition to new dark mode features and revamped screenshot tool refactorings, this release also introduces Console app, designed specifically to give newcomers to Linux an easy terminal emulator experience for basic CLI tasks. Additional improvements include increased file indexing performance, enhanced input handling improvements and direct scanout support for most full-screen OpenGL or Vulkan apps in order to reduce energy consumption.

PulseAudio

PulseAudio is a network capable audio server utilized by several programs such as Amarok, GStreamer and XMMS to playback and record audio. It features low latency while supporting numerous client libraries – its modular architecture can even accommodate additional modules for services like Jackd, Multicast RTP (MRTP) or Lirc.

To maximize performance of pulseaudio it is recommended that it be run using real-time scheduling if your platform supports it (and it’s not running headless). This decouples its scheduling latency from system load, helping prevent dropouts during playback. Unfortunately, giving real-time scheduling privileges to user processes carries with it the risk that someone could exploit this privilege and cause lockups; for this reason most distributions only utilize real-time scheduling on kernel processes themselves rather than any lower layers.

If your desktop environment doesn’t use pulseaudio sound server, make sure that pavucontrol (the GTK-based mixer) or media-sound/pavucontrol-qt is installed to enable control over “mixer” settings for whole system or individual applications. Most often these programs won’t mention pulseaudio server specifically but rather say something generic like “Sound Settings”.

If the sound in your applications has stopped working, a quick solution may be to open a terminal and execute these commands: “pactl list short sinks followed by “pacmd set-default-sink sink #>.” This will force the daemon to restart with its new configuration; you may need to do this several times if the issue still persists; alternatively updating /etc/pulse/cookie could help.

Dark Theme

Layan is a sleek dark theme designed with elegance in mind that elevates your Ubuntu desktop experience to new levels of sophistication. Available in Grey and Pink variants, Layan gives GNOME experience an elegant yet subtle appearance; transcending trends for lasting elegance on your computer screen.

Inspired by the Maia color palette, this dark theme offers something truly distinctive for your Linux desktop computer. Easy on the eyes and suitable for low light conditions. Compatible with various applications making this theme suitable for professional environments.

Nordic is hard to go wrong with. This theme offers an elegant combination of dark shell and light app windows – the same mix that other GNOME-based distributions like Fedora employ. Easy to install and offering an array of colour choices tailored to personal taste, this dark theme also comes with extensions that enhance its dynamic and functional user interface. Furthermore, all themes available through Nordic are free with open licenses; simply download from their respective websites before installing using GNOME Tweak tool.

Tripple Buffering

As with previous Ubuntu releases, Ubuntu 22.04 includes the most up-to-date Linux kernel (version 5.15 LTS). This update brings with it many improvements for desktop users such as increased support for modern hardware and enhanced security measures.

Low latency is one of the cornerstones of an excellent desktop experience, which refers to how long it takes an input, like keyboard stroke, to appear on screen. Latency often refers to how long an app needs to respond when someone keys in or clicks a mouse button – though it also applies to things such as graphics performance and how quickly inputs appear onscreen.

Problematic is that GPU processing times may take too long before being displayed on screen, due to factors like hardware issues, memory fragmentation or software bugs; this delay is noticeable to users and should be reduced as soon as possible.

Triple buffering may reduce delays; however, this solution comes with its own set of issues such as increased memory usage and lower framerates. A more efficient rendering engine like Vulkan could provide an ideal solution.

Ubuntu and Debian users already enjoy this feature thanks to Daniel Van Vugt who works at Canonical on GNOME as well as providing numerous upstream fixes/improvements. GNOME will receive this new addition in summer 2020.

Raspberry Pi

The Raspberry Pi is one of the most versatile and cost-effective computers on the market, capable of running headless (without monitor) or with screen and keyboard attached. Furthermore, its built-in Wi-Fi allows it to easily connect to networks.

Ubuntu supports Raspberry Pi in several ways. First, use the Raspberry Pi Imager to choose an Ubuntu image when flashing an SD card; after which, follow our desktop, server, and core tutorials to set up and begin using your Pi.

Installing Ubuntu onto a Raspberry Pi using the server edition’s ARM-specific settings is another viable solution for creating an Ubuntu server compatible with your device. Although the server edition doesn’t contain an X Window environment, GNOME, KDE and Unity applications can easily be added if required.

Advanced users may also benefit from configuring their filesystem to use Zswap and Zram, which can reduce storage usage by as much as 60% without negatively affecting performance. You can do this using tools such as zram-config or zram-tools.

Ubuntu also provides an authentic Linux experience on Windows with their Ubuntu WSL virtual machine, equipped with the latest apps and tools, integrated deeply into leading public clouds, certified for certain hardware types and certified to deliver an secure experience straight out of the box. For more information about this offering please visit their official website.

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