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Linus Torvalds released 6.15-rc1 and closed the 6.15 merge window on April 6. By that time, 12,633 non-merge changesets had found their way into his repository; that is substantially more than were merged during the entire 6.14 development cycle. Just under 6,000 of those changesets were merged after the first-half merge-window summary was written.

The 6.14.1, 6.13.10, 6.12.22, 6.6.86, and 6.1.133 stable kernels have all been released. They contain a relatively small collection of important fixes across the kernel tree.

Security updates have been issued by Debian (abseil, atop, jetty9, ruby-saml, tomcat10, trafficserver, xz-utils, and zfs-linux), Fedora (chromium, condor, containernetworking-plugins, cri-tools1.29, crosswords-puzzle-sets-xword-dl, exim, ghostscript, matrix-synapse, upx, varnish, and yarnpkg), Gentoo (XZ Utils), Mageia (augeas, corosync, nss & firefox, and thunderbird), Oracle (container-tools:ol8, firefox, freetype, and kernel), Red Hat (firefox), SUSE (chromium, gn, firefox-esr, go1.23-1.23.8, go1.24, go1.24-1.24.2, google-guest-agent, govulncheck-vulndb, gsl, python311-ecdsa, thunderbird, and webkit2gtk3), and Ubuntu (kamailio, libdbd-mysql-perl, linux-nvidia, linux-nvidia-6.8, and tomcat9).

With vertical tabs and tab groups now available to everyone, Firefox 138 looks like a smaller update promising only support for copying links for background tabs using the tabstrip context menu on Linux and macOS systems, as well as an improved address and credit card autofill feature that better handles dynamically updated forms.

The post Firefox 138 Is Out for Public Beta Testing with New Contrast Control Settings appeared first on Linux Today.

Steam’s latest update fixes UI bugs, improve download estimates and enhances controller support, HDR rendering, and Remote Play functionality.

The post Steam Rolls Out April Update with Fixes and UI Improvements appeared first on Linux Today.

For Linux users, the new Steam Client update improves the download speed of Steam client updates, fixes a rare issue on Linux where non-steam Protons could get assigned an incorrect compatibility tool, and no longer applies compatibility tool filtering to shortcuts.

The post Valve’s Latest Steam Client Release Brings Faster Download of Updates on Linux appeared first on Linux Today.

March 2025 updates to the largest compilation of recommended free and open source software available for Linux.

The post Best Free and Open Source Software: March 2025 Updates appeared first on Linux Today.

When managing software packages on Debian/Ubuntu-based systems, it’s common to add external repositories or Personal Package Archives (PPAs) to install software that isn’t available in the default repositories.

However, sometimes you might encounter an error like this:

E: The repository ‘http://ppa.launchpad.net/xyz/ubuntu focal Release’ does not have a Release file.

This error can prevent the apt command from installing or updating packages from that source.

The post Fixing PPA Error: Repository Does Not Have a Release File on Ubuntu appeared first on Linux Today.

Incus 6.11 container & virtual machine manager is out with initial Linstor support, improved VM and OCI container features, enhanced network options, and more.

The post Incus 6.11 Container & Virtual Machine Manager Released appeared first on Linux Today.

Discover how to install the Portainer Server container on Linux or WSL with the kickstart guide that will help you on your Portainer journey.

The post How to Install Portainer Server on Linux or WSL appeared first on Linux Today.

Zorin OS 17.3 rolls out with new features, enhanced privacy, and a seamless experience aimed at pleasing Windows 10 users.

The post Zorin OS 17.3 Tries to Attract Windows 10 Users appeared first on Linux Today.

KDE developers propose a new Plasma Login Manager to replace SDDM, aiming for deeper integration and a more feature-rich, modern login experience.

The post KDE Proposes New Plasma Login Manager to Replace SDDM appeared first on Linux Today.

This roundup highlights useful tools to view your fonts. We only feature free and open source software here.

The post 8 Best Free and Open Source Font Viewers appeared first on Linux Today.

Version:6.14.1 (stable) Released:2025-04-07 Source:linux-6.14.1.tar.xz PGP Signature:linux-6.14.1.tar.sign Patch:full ChangeLog:ChangeLog-6.14.1

Version:6.13.10 (stable) Released:2025-04-07 Source:linux-6.13.10.tar.xz PGP Signature:linux-6.13.10.tar.sign Patch:full (incremental) ChangeLog:ChangeLog-6.13.10

Version:6.12.22 (longterm) Released:2025-04-07 Source:linux-6.12.22.tar.xz PGP Signature:linux-6.12.22.tar.sign Patch:full (incremental) ChangeLog:ChangeLog-6.12.22

Version:6.6.86 (longterm) Released:2025-04-07 Source:linux-6.6.86.tar.xz PGP Signature:linux-6.6.86.tar.sign Patch:full (incremental) ChangeLog:ChangeLog-6.6.86

Version:6.1.133 (longterm) Released:2025-04-07 Source:linux-6.1.133.tar.xz PGP Signature:linux-6.1.133.tar.sign Patch:full (incremental) ChangeLog:ChangeLog-6.1.133

Version:next-20250407 (linux-next) Released:2025-04-07

Linus has released 6.15-rc1 and closed the merge window for this release. "As expected, this was one of the bigger merge windows, almost certainly just because we had some pent-up development due to the previous releases being impacted by the holiday season. That said, while it's bigger than normal, it's not some kind of record-breaking thing.". In the end, 12.633 non-merge changesets were pulled into the mainline during this merge window.