For a number of years it has been known that the Btrfs RAID5 and RAID6 code is potentially unsafe and not nearly as mature as the native RAID support found in this Linux file-system for other levels. Finally now we are seeing the Btrfs user-space programs warn the user when attempting to create such Btrfs native RAID 5/6 configurations.
For those using Gallium3D Nine as a Direct3D 9 state tracker when running Windows games on Linux rather than the likes of DXVK for going through Vulkan, next quarter's Mesa 21.1 will better handle 32-bit games with the Nine state tracker.
While Linux 5.12-rc2 released on Friday due to that prominent corruption bug, there still is some Sunday kernel fun with Greg Kroah-Hartman releasing a slew of stable kernel updates including Linux 5.11.4 and 5.10.21 LTS.
With the exciting "HWCAPS" feature of Glibc 2.33+ allowing for optimized versions of libraries to be more easily deployed on Linux systems, diagnosing issues around it can be a bit more complicated but on the way for Glibc 2.34 is a welcome improvement to help in such issues.
Over the years Google Summer of Code (GSoC) has resulted in some really great projects in the X.Org ecosystem from work in the early days on the open-source Radeon graphics driver stack to VKMS more recently to many other improvements especially as it pertains to open-source graphics drivers / Mesa. But for Google Summer of Code 2021 at least, the organization will not be participating.
6 March
With plans of formally releasing FreeBSD 13.0 at month's end, FreeBSD 13.0-RC1 is available this weekend and on-schedule for helping to test and evaluate this forthcoming major BSD operating system update.
KDE developers have been off to a busy March so far with working on adaptive panel opacity support for Plasma 5.22. Another pleasant improvement with that next Plasma release is to avoid rendering work when the screen is off.
Released this week was Intel's open-source oneAPI Level Zero v1.2.3 for the headers and loader based on their public oneAPI Level Zero specification.
The LABWC Wayland compositor advertises itself as an Openbox alternative and just saw its inaugural release.
Disclosed by Arm last summer was the Straight Line Speculation (SLS) vulnerability and they were quick to introduce new safeguards against SLS in the GCC and LLVM compilers. The compiler-based mitigations to straight-line speculation involves adding speculation barrier sequences around the vulnerable instructions to prevent speculatively executing instructions around changes in control flow. While compiler developers were quick to add the options, so far the Linux kernel developers are in disagreement still over its importance and the proposed patches that would flip on this option when compiling the ARM Linux kernel.
Exiv2, the widely-used C++ metadata library / tools for dealing with image metadata via EXIF / IPTC / XMP standards and ICC profiles is looking to join the KDE project.
While Linus Torvalds long has released his new kernel releases -- both release candidates and the inaugural stable releases -- every Sunday, there are the occasional exceptions like this week with Linux 5.12-rc2 being issued on Friday night. The Linux 5.12-rc2 release has come early due to that nasty file-system corruption issue stemming from botched swapfile handling.
Following the recent promotions of DataSketches and ECharts, the Apache Software Foundation has promoted Daffodil as their newest top-level project. Apache Daffodil is an open-source universal interchange implementation of the Data Format Description Language (DFDL).
5 March
When it comes to the AMDGPU kernel driver changes in Linux 5.12 for modern open-source AMD Radeon graphics, most notable is RDNA2 OverDrive overclocking support now being available as well as AMDGPU FreeSync over HDMI (pre-HDMI 2.1). But from initial testing the new in-development kernel is showing mostly subtle performance improvements for the Radeon RX 6800 series over Linux 5.11.
PyTorch 1.8 was released on Thursday as the newest version of this widely-used machine learning library. Exciting many will be easier AMD Radeon ROCm support with Python wheels now provided for that Radeon Open eCosystem support.
Recently I wrapped up some tests looking at the Dell XPS Linux laptop with Core i7 1165G7 "Tiger Lake" processor when looking at the Linux kernel performance of 5.10 vs. 5.11 vs. 5.12 as well as the impact if upgrading to the Linux 5.12 kernel.
The next major NVIDIA driver series, the 470 release series, is slated to be "even more Wayland-friendly" but what all that encompasses remains to be seen.
Published last month was an updated but still experimental version of the native Wayland support for Wine after that code was originally published last year. One of the lingering questions has been around the prospects of mainlining this Wayland driver in Wine while last week the longtime Wine project leader, Alexandre Julliard, provided some clarity on the matter.
hipSYCL, the innovative implementation of Khronos' SYCL for targeting CPUs and GPUs by integrating with existing toolchains, is seeing work on supporting Intel oneAPI Level Zero for running directly off Intel graphics hardware.
4 March
While it's 2021 and many modern Linux gaming and other workloads are focusing on the Vulkan API, Intel isn't letting up in their aggressive optimizations to their open-source "Iris" OpenGL Gallium3D driver for Linux systems. With the latest Mesa 21.1 code today there is a set of patches providing up to 17% better performance in some games while other OpenGL software is generally a few percent faster at least. In some micro-benchmarks it can be more than 50% faster.
Hector Martin, who has been working on the crowd-funded effort to bring Linux up on the Apple M1 SoC and the modern Apple devices using that in-house silicon, has sent out the third iteration of his kernel patches.
Linus Torvalds has now warned developers over using Linux 5.12-rc1 as a basis for their future branches and is looking to release 5.12-rc2 ahead of schedule as a result of that problematic file-system corruption bug stemming from a swap file bug.
Google has been delivering new Chrome milestone releases on a six week cycle for more than one decade while moving ahead they are shifting to a four-week cycle.
Qt 5.15.3 is out today with nearly 250 fixes as the latest point release for this last Qt5 long-term support series. However, as reported previously, new Qt 5.15 LTS point releases are restricted to The Qt Company's commercial customers.
Recent kernel point releases have reported erroneous maximum frequencies on AMD Zen 2 / Zen 3 CPUs in the area of 6GHz+ while now with the latest stable releases that is being fixed.
While the 5.12 merge window hasn't even been closed for a full week yet, there is already the first DRM-Misc-Next pull request heading into DRM-Next with the first batch of feature material aiming for the Linux 5.13 kernel cycle.
A set of "fixes" to the AMDGPU kernel driver were mailed out today that include a few notable changes for some post merge window alterations.
With the forthcoming Linux 5.12 kernel there is a big Redmond victory with Linux being able to boot as the root partition on Microsoft's hypervisor while moving forward the company still has more in store for the ongoing years long effort of Linux on Hyper-V.
Given this week's launch of Chrome 89 and the recent Firefox 86 debut, here are some quick benchmarks for those curious about the current performance when using Ubuntu Linux with a AMD Ryzen 9 5900X and Radeon graphics.
3 March
Zstd 1.4.9 is out today as the latest version of this implementation for the Facebook-led Zstandard lossless data compression algorithm. With Zstd 1.4.9 comes a very sizable speed-up when running in its long distance mode.
Intel SGX support finally landed in Linux 5.11 after going through 40+ rounds of review that took years for bringing up Software Guard Extensions in the mainline kernel. But that trek isn't yet over as Intel is now working on KVM SGX virtualization support to be upstreamed.
NomadBSD 1.4 is out today as the latest feature update to this operating system that is one of the BSD-based desktop initiatives.
AMD today announced the Radeon RX 6700 XT as the newest RDNA 2 graphics card to begin shipping later this month.
OpenSUSE Leap 15.3 Alpha started rolling out in December while today the beta builds have begun for this next openSUSE Leap installment.
For those wanting to help in testing out the Linux 5.12 kernel, at least it should no longer eat your data now if you rely on a swapfile.
The experimental NIR back-end for the R600 Gallium3D driver as an alternative to the default TGSI code-path has now enabled OpenGL 4.5 support for capable GPUs.
While DXVK has been receiving much attention these days for implementing Direct3D 9/10/11 atop the Vulkan API that can be consumed in a driver agnostic manner, Gallium Nine as a D3D9 state tracker going back years for Mesa continues to receive new work too.