HarfBuzz 12.3 Released - Nice Performance Improvements To This Text Shaping Engine

HarfBuzz 12.3 was just released for ending out 2025 with some nice performance improvements to this widely-used text shaping engine. HarfBuzz in turn is used by the prominent Linux desktop environments, Java, Flutter, various game engines, and apps like Chrome and Firefox for text shaping needs with OpenType fonts and more.

HarfBuzz 12.3 brings various fixes, support for full-instancing fonts with the v2 avar table, and other updates. Exciting me the most with this release are the
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44% Of GNOME Core Apps Are Written In C, 13% In JavaScript & 10% In Rust

GNOME developer Sophie Herold has shared some interesting end-of-year code stats for the GNOME project. The "GNOME" codebase is up to 6,692,516 lines of code at the end of 2025 with 1,611,526 lines of that being from GNOME apps. Where the data gets interesting is on the programming language breakdown in different areas.

Of the official GNOME Core apps, Sophie found that 44.8% of them are written
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Linux Kernel Highlights For 2025: Schedulers, Rust & Torvalds' Commentary

With the end of the year quickly drawing to a close, here is a look back at the most-viewed Linux kernel news of 2025.

This year brought a lot more Rust code to the Linux kernel, Linus Torvalds continuing to make sound decisions around kernel happenings, from handheld gaming devices to hyperscaler servers there continues to be immense activity each merge window, Bcachefs was dropped from the kernel this year, and the overall Linux kernel development community continues to be healthy and move in a steadfast manner.

So

Intel Open-Source Software Setback: IWD Development Hiatus

Adding to the unfortunate engineering setbacks at Intel this year as part of cost-cutting measures, the Intel IWD software development has been on a hiatus for the past three months. Going from previously seeing monthly releases and almost constant activity to now development ceasing up with no activity in the past three months.

Over the past three months a number of Phoronix readers have written in with concern around IWD , the Intel software project that they open-sourced back in 2016 with the intent of serving as a replacement to
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Linux 6.19 Lands Fix For ARM64 EFI Systems Crashing On Boot

Adding to the early headaches of Linux 6.19 with some regressions in performance and functionality were ARM64 hosts crashing on this in-development kernel version for those platforms using EFI. But a fix is now merged ahead of Linux 6.19-rc3 due out tomorrow.

It sure would be nice if more ARM64 hosts used EFI, especially in the single board computer (SBC) space but for now it's a more common trait for ARM64 Linux servers. In any
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QNX Self-Hosted Developer Desktop Brings QNX 8.0 To A Wayland + Xfce Desktop

Announced earlier in December but flying under the radar until now is the initial reoease of a QNX Self-Hosted Developer Desktop. This is a developer environment for the QNX real-time operating system primarily used on embedded systems. With now having this developer desktop option, the hassle of cross-compilation to target QNX can be avoided.

The debut QNX Self-Hosted Developer Desktop gets a full desktop environment running atop QNX 8.0 to focus on self-hosted QNX development. This does work with the QNX free personal
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Wine 11.0-rc4 Brings 22 Bug Fixes

Wine 11.0-rc4 is out today as the latest weekly release candidate in working toward the stable Wine 11.0 release in January.

With Wine 11.0 having been under a code/feature freeze since early December, it's strictly bug fixes the past four weeks. For this week's Wine 11.0-rc4 release there are 22 known fixes.

The fixes include taking care of gaming problems with Myst Masterpiece Edition, Heroes of Might and Magic 4

AMD RDNA3/RDNA4 Go Down Hard On Linux 6.19, But Here's How The Older AMD GPUs End Out 2025

As part of the various end-of-year benchmarking comparisons on Phoronix and with Linux 6.19 switching older AMD GCN 1.0/1.1 graphics cards to the AMDGPU driver by default , I planned for a very large AMD Radeon graphics card comparison on the latest open-source Linux driver for ending out 2025. In the end though I was thwarted by newer AMD RDNA3 / RDNA4 graphics cards regressing hard on Linux 6.19 that led to ending this testing prematurely

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Intel

Coreboot 25.12 Released With Qualcomm X1 Plus Platform Support, AMD Turin PoC

Coreboot 25.12 is out today as the latest quarterly feature update to this open-source BIOS/firmware solution.

Coreboot 25.12 rolls out proof-of-concept level support for AMD EPYC 9005 "Turin" processors. Great seeing EPYC Turin finally getting Coreboot treatment similar to Genoa. AMD EPYC (and Ryzen) will hopefully see more expansive Coreboot support and greater motherboard availability with their next-gen (Zen 6) wares as openSIL reaches production status.

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Ubuntu's Rust Infatuation, New Optimizations & Other Ubuntu Linux 2025 Highlights

It was a very interesting year for Ubuntu Linux. Ahead of the important Ubuntu 26.04 LTS release due out this coming April, Ubuntu Linux this year was expeditiously migrating to new Rust-based system tools like sudo-rs and Rust Coreutils, new performance optimizations continued to be explored for bettering the out-of-the-box Ubuntu performance, better ARM64 support with its desktop ISO, and enhancing the Snapdragon X Elite laptop support were among the Ubuntu highlights in 2025.

Out