Ubuntu 25.10 snapshot 4, the new monthly snapshot release of the next Ubuntu release, is available to download.

This is the final snapshot release for 25.10, as next will be the Beta release planned for September 18, while Ubuntu 25.10 stable release will be available on October 9.

Ubuntu 25.10, code-name Questing Quokka, is the next short term release with 9-month support until July 2026. The official announcement for the snapshot is HERE.

According to the on-going release note page, Ubuntu 25.10 is expected to have GNOME Desktop 49, Linux Kernel 6.17.

In the new snapshot, it added the new default wallpaper, Ptyrix terminal emulator, and Loupe image viewer. In the “apps” settings page, it now provide option to enable auto-start on per-app basis, through it seems only working for those running in sandbox.

Other changes are mostly already available since the last release. They include removed GNOME on Xorg session, added RVA23S64 ISA profile for RISC-V, TPM-backed Full Disk Encryption recovery key management, and reduced desktop images for Raspberry Pi.

They are as well following changes expected:

• Full VRR support in Mutter for users with compatible monitors.
• Better Wayland experience on Nvidia GPUs.
• Fully functional desktop session on RISC-V CPU architecture.
• And more.

Download Ubuntu 25.10 Snapshot 4

The snapshot 4 provides desktop images for amd64 and arm64/aarch64, server images for amd64/arm64/aarch64, PowerPC, RISC-V, and IBM Z, as well as WSL images, Network install, and pre-installed desktop and server images, which are available to download via the link below:

For non-GNOME users, there are also 10 official flavors features different desktop environments, including:

• Edubuntu 25.10 for educational use and features GNOME Desktop.
• Kubuntu 25.10 with KDE Plasma desktop.
• Lubuntu 25.10 with LxQt desktop.
• Ubuntu Budgie 25.10 with Budgie desktop.
• Ubuntu MATE 25.10 with MATE Desktop.
• Ubuntu Unity 25.10 with Unity Desktop.
• Ubuntu Cinnamon 25.10 with Cinnamon Desktop.
• Ubuntu Studio 25.10 for multimedia production and features KDE Plasma desktop.
• Ubuntu Kylin 25.10 with UKUI.
• Xubuntu 25.10 with XFCE Desktop.

The default Firefox browser (Snap version) in Ubuntu 24.04 is always failing to download or open files! Here’s why and how you can fix it.

Not only for Firefox, the issue also happens when read or write user files with other SNAP apps in both Ubuntu 22.04 and 24.04 LTSs.

Why?

I first heard of the issue was that some of my readers reported they cannot download HPLIP installers when following my tutorial.

I thought it was something to do with the download server until I see the snap warnings below in screenshot:

The warning told me that AppArmor (the kernel security module) is enabled, but no prompting client present. So for all snap apps, it auto-denies all the requests when trying to read or write files in user directories.

Meaning NOT only Firefox, all the applications installed as snap packages in Ubuntu 22.04 and 24.04 have the issue, while Ubuntu 25.04 excluded as it has the prompting client installed out-of-the-box.

In short, Ubuntu now has AppArmor enabled by default! And, Ubuntu 22.04 & 24.04 auto-deny snap apps’ permission requests due to lack of prompting client to manage the requests!

How to Fix the issue

To fix the issue, you may choose one of the options below:

• install prompting client to manage snap app permission requests.
• disable AppArmor (NOT RECOMMEND).
• use non-snap apps.

Option 1: Install Prompting Client in Ubuntu 24.04 | 22.04

I’ve written about how to install the prompting client as well as security center in Ubuntu.

Prompting client is the official client for snap apparmor prompting. And, the desktop Security Center provides an easy-to-access interface to manage all snap apps permissions you added.

Both the packages are snap and pre-installed in Ubuntu 25.04, while the current 2 Ubuntu LTS releases may install them by doing the steps below:

• either press Ctrl+Alt+T to open terminal, and run the commands below one by one to install the packages:

  sudo snap install desktop-security-center

  sudo snap install prompting-client

  

• or, launch App Center (or Ubuntu Software) then search & install both (filter by snap package) packages:
  

  install prompting client via AppCenter

After successfully install the client, you may now launch a Snap app (e.g., Firefox) then try downloading or opening a file. It will pop-up a dialog asking to grant permission, either once or always.

Once you clicked “Allow”, then the snap (Firefox in the case) can open or the download the file. And, you may then launch “Security Center” to manage the permissions you set.

Option 2: Disable AppArmor (NOT RECOMMEND)

AppArmor is a Linux Kernel security module to restrict app capabilities and permissions with profiles. Due to security reason, it’s NOT recommended to disable this feature.

But if you insist, do the following steps to disable it in Ubuntu (and most other Linux) which is using the default Grub bootloader.

1. First, press Ctrl+Alt+T to open terminal, and, run command to edit Grub configuration file:

sudo nano /etc/default/grub

2. When file opens in terminal, add apparmor=0 as value to either ‘GRUB_CMDLINE_LINUX_DEFAULT’ or ‘GRUB_CMDLINE_LINUX’ section.

3. After edited the file, press Ctrl+S to save and Ctrl+X to exit. Finally, run command below to update Grub:

sudo update-grub

And, the change will apply in next boot. To check AppArmor status, run command sudo aa-status in terminal.

Tips: For choice, user may install the graphical Grub-Customer tool, and use the tool to add apparmor=0 as kernel parameter under “General” tab.

That’s all. Enjoy!

CopyQ, the free open-source clipboard manager, released new 11.0.0 version few days ago.

The new release of this Qt-based advanced clipboard manager added some new features and improved scripting support with new class and other changes.

First, the release introduced new frameless_window option, allowing to show or hide the header/title-bar and window borders.

Simply, launch the action dialog (go to ‘Item -> Action’ or press F5 key) and run the command below will hide them, making CopyQ window borderless (Ubuntu may use Super + drag to move window in this mode).

copyq config frameless_window true

While, Linux user may also run the command from terminal to do the same job. And, replace true with false in the command to un-hide the header and border.

For advanced users who use the scripting API for network request, CopyQ 11.0.0 introduced new NetworkRequest class, allowing to make HTTP request with custom headers, HTTP method, number of allowed redirects and timeout.

Here’s an example from the official Docs:

let req = NetworkRequest();

# allow redirects
req.maxRedirects = 5;

# set request headers
req.headers = {
   'User-Agent': req.headers['User-Agent'],
   'Accept': 'application/json',
};

# create JSON data
const data = JSON.stringify({text: 'Hello, **world**!'});

# send POST request
const reply = req.request(
    'POST', 'https://api.github.com/markdown', data)

# the request is synchronous and may not be finished
# until a property is called (like reply.data or reply.status)
if (!reply.finished) { serverLog('Processing...'); }
print(reply.data);

CopyQ added Emacs navigation key-bindings support in last 10.0.0, the new release improved it by enabled Vi/Emacs navigation in menus, and Ctrl+[ in Vi and Ctrl+G in Emacs to work in many other places as Esc key (e.g., to hide menus, dialogs).

It as well added support localizing command names in the command INI files, e.g.,:

[Command]
Name = ...
Name_cs = ...
Name_fr = ...
Name_pt_BR = ...
Name_pt = ...

Other changes include:

• Automatically switch light / dark header (title-bar) to match system color scheme.
• Support showing preview for more images: webp and ico.
• Prevent backspace from closing the main window.
• Selections and current items/rows/data in scripts now only relate to the tab selected with tab(...) in scripts
• Various bug-fixes and translation updates.

How to Install CopyQ Clipboard Manager 11.0.0

For more changes, and installer packages for Windows, macOS, Debian, openSUSE, and Raspbian, go to the project releases page:

For Ubuntu 22.04, Ubuntu 24.04, and 25.04, the official PPA has updated with the new package for modern Intel/AMD platform.

Simply press Ctrl+Alt+T on keyboard to open terminal and run commands below one by one to add PPA & install the clipboard manager:

sudo add-apt-repository ppa:hluk/copyq
sudo apt update
sudo apt install copyq

CopyQ can be also installed in most Linux on Intel/AMD and ARM platforms through Flatpak package, which runs in sandbox environment.

• Install flatpak daemon. For other Linux, see this setup guide:

  sudo apt install flatpak

• Install the clipboard manager:

  flatpak install https://dl.flathub.org/repo/appstream/com.github.hluk.copyq.flatpakref

Uninstall CopyQ

Depends on which package you installed, you may remove CopyQ (.deb) by running command:

sudo apt remove copyq

Then remove the Ubuntu PPA from your system via:

sudo add-apt-repository ppa:hluk/copyq

Also run sudo apt update to refresh cache if it didn’t do it automatically.

To uninstall the Flatpak package, use command:

flatpak uninstall --delete-data com.github.hluk.copyq

Skip --delete-data if you want to keep personal configurations, and run flatpak uninstall --unused to remove useless run-times.

FFmpeg, the popular free open-source multimedia library, released new major 8.0 version almost a year since the last 7.1.

The new FFmpeg 8.0, codename “Huffman”, added native decoding support for Samsung’s Advanced Professional Video (APV) codec, Apple’s ProRes RAW, Sanyo LD-ADPCM, RealVideo 6.0, G.728, and ADPCM IMA Xbox.

It also added encoding support for APV (via libopenapv wrapper), libx265 alpha layer, and animated JPEG XL images (through libjxl).

FFmpeg 8.0 also introduced new decoders and encoders based on pure Vulkan compute implementation. It’s a cross-platform, open standard APIs, allowing programs to use GPU hardware accelerated rendering, calculating, and decoding, which can provide very significant speedups on some hardware.

So far, the Vulkan compute-based codecs only supports FFv1 (encoding and decoding) and ProRes RAW (decode only), while ProRes (encode + decode) and VC-2 (encode + decode) will be available in next minor release.

The release as well improved some codecs support by introducing hardware accelerated decoding support for VP9 (Vulkan), VVC (VAAPI), and hardware accelerated encoding support for AV1 (Vulkan). And, both decoding and encoding (hardware accelerated) for the OpenHarmony H264/5 video codecs.

Other changes include improved VVC (aka H.266) support via all content of SCC (Screen Content Coding), including IBC (Inter Block Copy), Palette Mode and ACT (Adaptive Color Transform), and following more:

• New filters: colordetect, pad_cuda, scale_d3d11, Whisper, and others.
• APV parser
• APV in MP4/ISOBMFF muxing and demuxing
• VVC in Matroska,
• CENC AV1 support in MP4 muxer.
• Enhanced FLV v2: Multitrack audio/video, modern codec support.
• set default prediction method to PAETH for pngenc.

In addition, FFmpeg 8.0 also dropped OpenSSL < 1.1.0, removed yasm support (users need to use nasm), and deprecated OpenMAX encoders. For more, see the official release note.

Get FFmpeg 8.0

FFmpeg only provides the source tarball which is available to download at its website via the link below:

For Linux, besides waiting for your Distro to update the FFmpeg package, Deb Multimedia repository has built the 8.0 release for Debian experimental.

UPDATE: For Ubuntu 22.04, Ubuntu 24.04, and Ubuntu 25.04, FFmpeg 8.0 is available via this unofficial PPA.

NOTE: The PPA contains many updated libraries that may break dependencies! And, the packages are NOT well tested. Use at your own risk!

To add the PPA and install FFmpeg 8.0, run command:

sudo add-apt-repository ppa:ubuntuhandbook1/ffmpeg8
sudo apt update
sudo apt install -t "o=LP-PPA-ubuntuhandbook1-ffmpeg8" ffmpeg

Modern GNOME apps do NOT support traditional themes, but you may change the look with custom color schemes!

As you know, GNOME has moved to use GTK4 + LibAdwaita for its applications and desktop components. And, so many apps use the LibAwaita library for their modern UI, which however do not support theming (see this thread).

To make libadwaita apps look consistent on non-GNOME desktops, Linux Mint has a soft fork called libadapta, and programmers can inject their custom CSS code.

What if you have no coding skill, but want a fresh look of the GNOME apps? Here’s a stupid simple app that can do the job by changing the color schemes!

There used to be an app called Gradience to set custom colors for Adwaita apps, which is however discontinued due to lack of maintenance. Just a month ago, a new app was born for GNOME users boring with the default look.

It’s Rewaita, a free open-source app written in CSS and Python, which provides a simple user interface, with few dozen of color scheme presets (for light and dark mode) and few window controls (min, max, close) layout.

Just choose one from the list, then Adwaita apps (may need a re-launch), Gnome top-bar, and menus’ colors change automatically according to the color scheme.

For choice, user may switch to “Custom” tab for options to set custom background and text colors for buttons, main window, widgets, warning, etc components.

As well, you may change the named colors, e.g., Blue, Teal, Green, Orange, Yellow accent colors. So, when you select an accent color in Appearance settings page, it won’t display the named color but the custom color you set.

The custom colors can be saved as preset for either light or dark mode, then apply at any time from the “Theming” tab.

How to Install Rewaita:

NOTE: Rewaita so far does NOT work in Ubuntu 24.04 and works partially IN MY CASE in Ubuntu 25.04, probably because Ubuntu does not feature vanilla Gnome environment.

Rewaita is available to install in most Linux on amd64 and arm64 platforms as Flatpak package, which runs in sandbox environment.

Fedora workstation (with 3rd party repository enabled) may search & install it from GNOME Software.

While, other Linux may do the steps below one by one to get it:

• First, follow the official setup guide to enable Flatpak support. For Debian/Ubuntu, simply open terminal (Ctrl+Alt+T) and run command:

  sudo apt install flatpak

  

• Next, install the Rewaita package by running command:

  flatpak install https://dl.flathub.org/repo/appstream/io.github.swordpuffin.rewaita.flatpakref

  There’ll be also lots of downloads for GNOME and FreeBSD run-times if you don’t have them.

  

After installed the app package, launch either from GNOME Overview (log out and back in if app icon not visible) or by running command in terminal:

flatpak run io.github.swordpuffin.rewaita

And, replace run with update in last command to check & install updates.

In addition, to make custom colors work for Flatpak apps, you need to run one more command to grant read & write permission to the gtk-4.0 configuration directory for Flatpak.

sudo flatpak override --filesystem=xdg-config/gtk-4.0:rw

And for GNOME Top-bar and menus, you need to set Gnome Shell theme to Rewaita (via Gnome Tweaks).

Tips: if “Shell” theme option is grayed out, then you need to install User Themes extension:

• either visit the last link and use the ON/OFF toggle to install. Though you need to install browser extension if prompted, and Debian/Ubuntu needs to install the agent package first:

  sudo apt install chrome-gnome-shell

• or install “Extension Manager” from Gnome Software, App Center (debian package), or your system package manager, and use it to search & install Gnome Shell extensions.
• finally, re-launch Gnome Tweaks.

Uninstall Rewaita

To uninstall the app, first reset to default color schemes (use the ⟳ icon) for both light, dark, and window controls.

Then, run the command below to remove the flatpak package:

flatpak uninstall --delete-data io.github.swordpuffin.rewaita

Fooyin, the free open-source Foobar2000 inspired music player, released new 0.9.0 (and 0.9.1 with quick fixes) version few days ago.

In case you didn’t know Fooyin, it’s a music player features Foobar2000 look like appearance and Qt6-based user interface designed for KDE desktop.

It uses FFmpeg library as backend for local music playback, and supports VGM (Video Game Music), ReplayGain, tag editing, and gapless playback. And, it supports editing mode to customize the app layout, and it’s highly extensible with a plugin system and scripting language.

Fooyin is less than 2 years old. It keeps updating with new features. And, the new 0.9.0 version is the most recent one that introduced some new features.

Since the release, it supports searching and downloading album artwork from LastFM, Discogs, and/or MusicBrainz (Cover Art Archive).

Just right-click on current cover art, then you may either select “Quicksearch for artwork” to automatically download and set new artwork. Or, choose “Search for artwork” to open the finder dialog to search more and fetch the one that your favorite.

The downloaded cover arts by default are embedded into the music files (as metadata tags), though you may choose to save them separately in your music folder.

Besides that, Fooyin 0.9 added searching lyrics from either local files or remote sources, including LRCLIB, NetEase Cloud Music, QQ Music, and DarkLyrics.

You can enable/disable lyrics sources, drag’n’drop re-arranging the order in which they are queried, save lyrics (either manually or automatically) into either metadata tags or separate files, and view and edit lyrics using the lyrics editor dialog.

The release also introduced initial autoplaylist support. You can create an autoplaylist from “Files” menu, then load from ‘Most Played’, ‘Recently Added’, ‘Last Played’, ‘Has Lyrics’, or use query by using script editor.

Autoplaylists are playlists generated from a query. They are automatically populated, which means their tracks cannot be edited. They will also regenerate whenever the music library changes i.e. tracks added, deleted or changed.

Other changes in Fooyin 0.9.0 include:

• Add button to clear artwork cache.
• VBR (Variable Bitrate) track update interval configurable.
• Add support audio/x-flac mime type.
• Option to control playback after queued song.
• Add libre.fm service
• New script functions..

For more, see the release note in Github page.

Install Fooyin Music Player

Fooyin so far provides only Linux installer packages which are available to download at the Github page via the link below:

They are .pkg for FreeBSD, .rpm for Fedora, and .deb for Debian and Ubuntu. While, Arch Linux may get it from AUR repository.

For choice, it also runs in sandbox for most Linux through the Flatpak package.

LibreOffice, the popular free open-source office suite, release new 25.8 version today!

LibreOffice 25.8 is a new major release that features user interface improvements, many new spreadsheet functions, faster file loading, and many other new features.

First, the new release added support for exporting PDF 2.0 (ISO 32000-2). The PDF export dialog now offers a drop-down box to choose PDF 2.0 or PDF/A-4 that’s using PDF 2.0 as the base. And, it implemented modern AES-256 encryption that is mandatory with PDF 2.0.

For those who would like to use LibreOffice as a document viewer, the release introduced application-wide viewer mode that all files will be open as read-only mode with all editing tools disabled.

And the option is controlled by ViewerAppMode option in the Advanced -> Expert Configuration dialog.

The Calc app in the release introduced many new functions. They include CHOOSECOLS, CHOOSEROWS, DROP, EXPAND, HSTACK, TAKE, TEXTAFTER, TEXTBEFORE, TEXTSPLIT, TOCOL, TOROW, VSTACK, WRAPCOLS, and WRAPROWS functions.

It as well added “Clear AutoFilter” option to Calc cells context menu, and ability to customize conditional formatting operators in icon sets.

The Writer app introduced new Move line hyphenation rule to choose whether to hyphenate the last line words of the pages and move the whole lines to the next pages instead.

It added paragraph, column, page and spread end zones, command to insert a paragraph break before a table, command to convert fields into plain text, and dialog for copy content of a field from read-only document.

There are also per-window track changes recording, reinstate for tracked changes, option to redact images (remove sensitive data), and ability to set the language of certain punctuation characters.

LibreOffice 25.8 also has significantly performance improvements. Writer and Calc open files up to 30% faster in benchmark tests.

For Writer, it’s now much faster for deleting very large tables, faster loading tables with bookmarks, and faster to open large right-to-left documents in. For Calc, it greatly improved loading XLSX files with lots of conditional formatting, graphical objects, customFormat attributes, or formulas.

Other changes in the release include:

• Accessibility check for links and references in writer header/footer.
• Support Embedded fonts in PPTX files.
• Master Slides in Impress and Master Pages in Draw can now be copied.
• Show boundaries for page margins in Draw.
• Signed PDF output now compatible with Adobe Reader.
• Background image in document now visible as a bitmap thumbnail.
• BASIC IDE code completion and auxiliary resources (experimental).
• New Macro Manager dialog (experimental)
• ODF Wholesome Encryption (experimental)

LibreOffice 25.8 also removed Windows 7 and 8/8.1 support, deprecated 32-bit Windows build. And, it’s the last version that runs on macOS 10.15. For more, see the official release note.

Get LibreOffice 25.8

LibreOffice 25.8 is available to download for Linux, Windows, and macOS via the link below:

For Ubuntu users, there are 5 choices, though some of them are not updated at the moment of writing.

• AppImage package – run to launch the office suite without installation required. Ubuntu since 22.04 needs to install libfuse2 package first.
  

  LibreOffice AppImage

• Flatpak package – runs in sandbox environment. Ubuntu users may run the 2 commands below one by one to install:

  sudo apt install flatpak

  flatpak install https://dl.flathub.org/repo/appstream/org.libreoffice.LibreOffice.flatpakref

• Snap package – available in App Center (Ubuntu Software), which also runs in sandbox environment.
• Ubuntu PPA – recommend for users who prefer native .deb package. Though the LibreOffice Fresh PPA usually has a few weeks (even months) delay for the new major releases.To add PPA and upgrade pre-installed libreoffice to the latest, run commands below one by one:

  sudo add-apt-repository ppa:libreoffice/ppa
  sudo apt update
  sudo apt install libreoffice

• Official Deb packages – the download page also provide native .deb packages for Ubuntu and Debian users.After downloaded the tarball, extract, and navigate to the sub-folder that contains all the .deb packages. Right blank area and select “Open in Terminal”, finally run command to install them all:

  sudo apt install ./*.deb

  

Uninstall LibreOffice

As there are so many ways to install the office suite, it’s easy to get it installed multiple times, resulting duplicated app icons.

Make backup of your important data before uninstalling the application.

To uninstall the Snap package, either use App Center (or Ubuntu Software) or run command:

snap remove --purge libreoffice

For Flatpak package, use the command below to uninstall:

flatpak uninstall --delete-data org.libreoffice.LibreOffice

To uninstall the Deb packages downloaded from LibreOffice website, use command:

sudo apt remove libobasis25.8* libreoffice25.8*

Or, remove the Ubuntu PPA package by running command:

sudo apt remove --autoremove libreoffice-common

NOTE: Remove the PPA package will also get rid of the pre-installed LibreOffice (if Ubuntu was installed in “Extended selection” mode). You may choose to purge PPA which will downgrade LibreOffice to the stock version:

sudo apt install ppa-purge

sudo ppa-purge ppa:libreoffice/ppa

Kdenlive, the popular KDE video editing software, released new 25.08.0 version yesterday.

The new 25.08.0 is a new feature release that added 10 bit x265 encoding for NVIDIA, and 10 bit export profiles in the render dialog, though it will be converted to 8 bit when using compositing or non-avfilter effects.

It as well replaced AV1 profile with the faster SVT-AV1, along with preset options to control the quality and speed, and, added power management option to disable sleep while rendering and playing.

Audio mixer in the release has been redesigned with clearer level visuals and thresholds. And, it fixed some issues for better HiDPI displays support with fractional scaling.

Kdenlive 25.08.0 also improved SVG and image support for its titler. It’s now has ability to move and resize items, and shift-drag item border to center resize.

It renamed the Pattern tab to Templates and moved the templates dropdown to it. As well, it added timecode widget with ability to drag to seek in the Titler.

The subtitle edit widget in the new release now is resizable to adapt to lower resolution displays. And, it now requires shift + drag of a subtitle clip to create a new layer.

It as well added a new handle allowing to rotate an item in the preview using the Transform effect. And it improved monitor snapping by adding back snapping when resizing for non-rotated frames, snapping when moving a rotated frame, and added snapping support for all edges.

Other changes include:

• Improve Scope styling by using system palettes.
• Ability to create guides and markers from project notes.
• New option to show thumbnails in the markers list dialog.
• New ‘Show markers for all clips in the project’ toggle option.
• Add Enable Hardware Decoding option in welcome dialog.
• Add SVT-AV1 to codecs which use CRF option.
• Option to open log file in render dialog.
• Warn when exiting Kdenlive with running job.

For more about Kdenlive 25.08.0, see the official release note.

How to Install Kdenlive 25.08.0

The official installers for Linux, Windows, and macOS are available to download in its website via the link below:

As a KDE project, you may alternatively download it from KDE website via this page.

Linux user may choose download the AppImage, then click Run to launch the video editor after granted executable permission. Though, Ubuntu since 22.04 needs to install libfuse2 library first in terminal (Ctrl+Alt+T):

sudo apt install libfuse2

While AppImage is so far only for modern Intel/AMD (x86_64) platform, user may choose the Flatpak package that supports both X86_64 and ARM64 platforms, though it runs in sandbox environment.

Linux Mint and Fedora can search & install the Flatpak package from either Software Manager or GNOME Software.

While Debian/Ubuntu, may run the 2 commands below one by one to install the package:

• Enable flatpak support:

  sudo apt install flatpak

• Install Kdenlive flatpak package:

  flatpak install https://dl.flathub.org/repo/appstream/org.kde.kdenlive.flatpakref

For Ubuntu, there’s also official snap package available in App Center (or Ubuntu Software).

And, if you want to build Kdenlive from source, here’s a step by step guide shows how to do the job in Ubuntu 25.04.

Firefox 142.0, the August release of the free open-source web browser, is available to download.

The official release note for the new version is not ready at the moment of writing, though the source tarball and installers for Windows, Linux, and macOS are out!

According to the Github releases page, Firefox 142.0 added new ETP stick mode options to automatically apply required exceptions to avoid website breakage. Exceptions are split into baseline (core functionality) and convenience (extra features). And, it’s also available when working in ETP Custom mode.

The AI-powered link preview feature that was introduced as experimental since version 139.0, now is generally available for en-US, en-CA, en-GB, en-AU users.

The feature allows to long press (or right-click and choose “Preview Link”) a link to preview the page that can optionally include AI-generated key points. The AI content are processed on user’s local device, though it recommends more than 3 GB of available RAM.

And, this features is gradually rolling out and so far only enabled for users mentioned above. While, others can get it in Firefox Labs setting page.

For users in United States, Firefox now groups article recommendations on New Tab page into topic sections, like Sports, Food, and Entertainment. And, you can block ones that you’re not interested in.

On Windows, clicking a persistent notification when Firefox is closed / restarted will now properly open the browser with the relevant web-page, instead of opening the main page of the website.

In Firefox 142, when you click collapse a tab group, the active tab in that group is still visible. This can keep your header tidier when working with many tabs open in active tab group.

Other changes in the release include:

• Add Remove from Sidebar option to side-bar extension icon.
• Improve search results from browsing history via the address bar.
• Improve drag-and-drop support for blob images.
• Various security fixes.

There are as well new features and improvements for developers. They include wllama API for extensions support, allowing developers to integrate local language model (LLM) into add-ons, and:

• Prioritized Task Scheduling API, to assign and manage task priorities.
• Selection.getComposedRanges() API, to accurately get selected text ranges across shadow DOM boundaries.
• URLPattern API, to match and parse URLs using a standardized pattern syntax.
• Display Request Headers/Cookies/Params in the Network panel even request isn’t finished yet.

Get Firefox 142.0

For more changes and the download link, go to its website via the link below:

As mentioned, the release note is not ready at the moment of writing. If you can’t wait to try it out, download it from this FTP page.

Ubuntu 25.10, code-name Questing Quokka, is coming soon in next few months. Now, the default wallpapers are out!

As usual, the default wallpaper is made up of the mascot (quokka) in center, a type of wallaby from southwestern Australia, and a gradient background.

As you see via the image below, this time it looks like a quokka that’s hopping and bounding to Ubuntu (the small logo) on the earth.

The file-name is always “warty-final-ubuntu.png“, and it features 4K (3840×2160) resolution.

As well, there are few variants for different purpose, e.g., dark mode for dark desktop style, dimmed and light versions. See the previews below:

In addition, the Ubuntu 25.10 default wallpaper also has a full-color version along with its light, dark, and dimmed variants. They are:

• Questing_Quokka_Full_Color.png,
• Questing_Quokka_Full_Dark.png,
• Questing_Quokka_Full_Dimmed.png,
• and Questing_Quokka_Full_Light.png.

Download Ubuntu 25.10 Wallpapers

The new wallpapers will be soon made into the Ubuntu 25.10 system repository. For current 25.10 snapshot users, just keep the system up-to-date, then you’ll get the wallpapers in next few days.

For other operating systems, you may download the wallpapers from the source page via the link below:

Then, click the “plain” links at the end of the desired images to download:

• warty-final-ubuntu.png – default wallpaper (it will be 26.04 wallpaper around 6 months later).
• ubuntu-wallpaper-d.png – dark variant.
• Questing_Quokka_Full_Color_3840x2160.png – other variants.
• Questing_Quokka_Full_Dark_3840x2160.png – other variants.
• Questing_Quokka_Full_Dimmed_3840x2160.png – other variants.
• Questing_Quokka_Full_Light_3840x2160.png – other variants.
• Questing_Quokka_Wallpaper_Dimmed_3840x2160.png – other variants.
• Questing_Quokka_Wallpaper_Light_3840x2160.png – other variants.

NOTE: Firefox (default Snap) does NOT download files in my case. Try Firefox Deb or other web browsers.

And, please leave comment below if you know a better place to download the wallpaper images, as Ubuntu may change the source page (it did) in future!

Ubuntu 25.10 Optional Wallpapers

In addition, there will be some optional wallpapers shipped by default in Ubuntu 25.10. They are the wallpaper contest winners that will be out in next few days.

You can vote your favorite wallpapers HERE until August 18th. And, I’ll post the winner images below once available.