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An introduction to Linux kernel initcalls

July 14, 2020 by Mylène Josserand  |   Blog

Initcalls, which serve to call functions during boot, were implemented early on in the development of the Linux Kernel. Read on as we take a closer look, including their purpose, their usage, ways to debug them (using initcall_debug or FTrace), and more.

An introduction to Linux kernel initcalls

Deep dive into OpenGL over DirectX layering

July 09, 2020 by Louis-Francis Ratté-Boulianne  |   Blog

Earlier this year, we announced a new project with Microsoft: the implementation of OpenCL & OpenGL to DirectX translation layers. Here's the latest on this work, including the steps taken to improve the performance of the OpenGL-On-D3D12 driver.

Deep dive into OpenGL over DirectX layering

Welcoming five new Collaborans!

July 09, 2020 by Erica Ryoo  |   News & Events

Despite the many obstacles brought on by the pandemic, Collabora continues to build and strengthen its engineering and administration teams for the road ahead. Join us in welcoming Angelica, Raghavendra, Doug, Italo and Theodotos!

Welcoming five new Collaborans!

Monado: Multi-application support with XR_EXTX_overlay

June 30, 2020 by Lubosz Sarnecki  |   News & Events

The recent improvements in Monado like out of process compositing and multi-layer rendering released with v0.2 prepared the requirements to implement OpenXR's XR_EXTX_overlay extension.

Monado: Multi-application support with XR_EXTX_overlay

Using syzkaller, part 4: Driver fuzzing

June 26, 2020 by Ricardo Cañuelo Navarro  |   Blog

Syzkaller is much needed tool for Linux kernel testing and debugging. With some work, it can also be enhanced to find bugs in specific drivers, such as V4L2. Here's how.

Using syzkaller, part 4: Driver fuzzing

Cross building Rust GStreamer plugins for the Raspberry Pi

June 23, 2020 by Guillaume Desmottes  |   Blog

Previously, we discussed about how Rust can be a great language for embedded programming. In this article, we'll explain an easy setup to cross build Rust code depending on system libraries, a common requirement when working on embedded systems.

Cross building Rust GStreamer plugins for the Raspberry Pi

Embedded Linux & Open Source take the virtual stage

June 18, 2020 by Mark Filion  |   News & Events

Collabora will be presenting on five separate occasions during the virtual editions of Embedded Linux Conference North America and Open Source Summit North America, taking place later this month.

Embedded Linux & Open Source take the virtual stage

Generating MPEG-DASH streams for Open Source adaptive streaming with GStreamer

June 12, 2020 by Stéphane Cerveau  |   Blog

Adaptive streaming is a technique to provide flexibility and scalability by offering variable bit-rate streams to the client. Here's a quick guide on how to generate a MPEG-DASH stream (the most completely adaptive streaming technique) using GStreamer.

Generating MPEG-DASH streams for Open Source adaptive streaming with GStreamer

Bifrost meets GNOME: Onward & upward to zero graphics blobs

June 05, 2020 by Alyssa Rosenzweig  |   Blog

With only free software, a Mali G31 chip can now run Wayland compositors with zero-copy graphics, including GNOME 3. We can run every scene in glmark2-es2, 3D games like Neverball can be played, and video players mpv and Kodi are now supported.

Bifrost meets GNOME: Onward & upward to zero graphics blobs

Kernel 5.7: Forging ahead, despite COVID-19

June 04, 2020 by Andrzej Pietrasiewicz  |   News & Events

This latest release is the first to contain development work accomplished amid the lockdown measures. Despite these significant changes, Collaborans have also been steadfast in their contributions, with multiple projects progressing.

Kernel 5.7: Forging ahead, despite COVID-19

Google Summer of Code 2020

June 01, 2020 by Mark Filion  |   News & Events

Coding hss begun for this year's Google Summer of Code (GSoC) projects, announced earlier last month. The 2020 edition selected 1,199 students from 66 countries, to work with 199 mentoring organizations over the course of the summer.

Google Summer of Code 2020

Monado OpenXR runtime development gaining momentum: version 0.2, multi-layer support & more!

May 29, 2020 by Jakob Bornecrantz  |   News & Events

With the excellent (online) edition of Augmented World Expo 2020 in full swing this week, what better time to announce version 0.2 of the Monado OpenXR runtime for Linux. It's been a very busy three months since the last Monado developer update!

Monado OpenXR runtime development gaining momentum: version 0.2, multi-layer support & more!

Improving the reliability of file system monitoring tools

March 14, 2022 by Gabriel Krisman Bertazi  |   Blog

Every file system used in production has tools to try to recover from system crashes. To provide a better infrastructure for those tools, our kernel team developed FAN_FS_ERROR, a new fanotify event which monitors error notifications.

Improving the reliability of file system monitoring tools

PipeWire: A year in review & a look ahead

March 08, 2022 by George Kiagiadakis  |   Blog

The PipeWire project made major strides over the past few years, bringing shiny new features, and paving the way for new possibilities in the Linux multimedia scene. A look what was accomplished in 2021, and what lies ahead for 2022.

PipeWire: A year in review & a look ahead

Landing a new syscall: What is futex?

February 08, 2022 by André Almeida  |   Blog

Over the past 18 months, we have been on a roller-coaster ride developing futex2, a new set of system calls. As part of this effort, the futex_waitv() syscall has now landed in Linux 5.16. But what exactly is futex?

Landing a new syscall: What is futex?

Writing an open source GPU driver - without the hardware

January 27, 2022 by Alyssa Rosenzweig  |   Blog

Until now, no Valhall devices (Mali-G57, Mali-G78) ran mainline Linux - whilst this made driver development obviously difficult, there’s no better time to write drivers than before the devices even get into the hands of end users.

Writing an open source GPU driver - without the hardware

A Pixel's Color & new documentation repository

January 25, 2022 by Pekka Paalanen  |   Blog

My work on Wayland and Weston color management and HDR support has been full of learning new concepts and terms. Many of them are crucial for understanding how color works, and what the values in a pixel actually mean.

A Pixel's Color & new documentation repository

Wine on Wayland year-end update: improved functionality & stability

December 22, 2021 by Alexandros Frantzis  |   Blog

It has been just over a year since we first announced our effort to implement a Wayland driver for Wine. Here's a recap of what has been done since then to improve both the functionality and stability of the driver.

Wine on Wayland year-end update: improved functionality & stability

Venus on QEMU: Enabling the new virtual Vulkan driver

November 26, 2021 by Antonio Caggiano  |   Blog

A step-by-step guide on how to enable 3D acceleration of Vulkan applications in QEMU through the new Venus experimental Vulkan driver for VirtIO-GPU with a local development environment.

Venus on QEMU: Enabling the new virtual Vulkan driver

Run your own CI pipeline with GStreamer's new monorepo

October 26, 2021 by Xavier Claessens  |   Blog

Maintaining a non-trivial set of GStreamer patches can be tricky. Thanks to the recent move to a single, unified git repo, you can now easily run a GStreamer continuous integration pipeline on your own GitLab instance. Here's how.

Run your own CI pipeline with GStreamer's new monorepo

Improving test coverage for cameras in KernelCI

October 08, 2021 by Nícolas F. R. A. Prado  |   Blog

Earlier this year, I joined Collabora as an intern to work on improving testing in libcamera and automating it through KernelCI. Having recently completed the internship, here's a look back at this experience and what was accomplished.

Improving test coverage for cameras in KernelCI

A tale of two toolchains and glibc

September 30, 2021 by Adrian Ratiu  |   Blog

With the LLVM toolchain seeing increasing development and adoption alongside the older, more established GNU toolchain, projects needing to support both, in particular the GNU C library (glibc), are facing challenges and questions.

A tale of two toolchains and glibc

An xrdesktop summer of code

September 10, 2021 by Lubosz Sarnecki  |   Blog

This summer, Christoph Haag and I had the pleasure of taking part in Google Summer of Code as mentors for xrdesktop, the Open Source project bringing the Linux desktop to VR on Valve's SteamVR & Monado. Here's what was accomplished.

An xrdesktop summer of code

Adding VP9 and MPEG2 stateless support in v4l2codecs for GStreamer

June 23, 2021 by Daniel Almeida  |   Blog

Earlier this year, from January to April 2021, I worked on adding support for stateless decoders for GStreamer as part of a multimedia internship at Collabora. Here's a recap of this completed work.

Adding VP9 and MPEG2 stateless support in v4l2codecs for GStreamer

NVK reaches Vulkan 1.0 conformance

November 20, 2023 by Faith Ekstrand  |   News & Events

As of today, NVK is now an officially conformant implementation of the Vulkan 1.0 API on NVIDIA Turing hardware. This is the first time any Nouveau driver has gotten the Khronos conformance badge on any API.

NVK reaches Vulkan 1.0 conformance

Patch Ready for Linux Plumbers 2023

November 09, 2023 by Kara Bembridge  |   News & Events

To ensure the Linux kernel is running smoothly, it requires maintenance from a variety of levels. Those working on the lower levels, or the plumber layers, of the kernel will have a chance to convene next week at the annual Linux Plumbers Conference.

Patch Ready for Linux Plumbers 2023

Benchmarking machine learning frameworks

November 02, 2023 by Vineet Suryan  |   News & Events

MLBench enables developers and maintainers to effortlessly gauge how their frameworks perform compared to other implementations, prior code versions, or across different boards, with respect to both runtime performance and other metrics.

Benchmarking machine learning frameworks

Kernel 6.6: Long-awaited features and enhanced hardware support

October 31, 2023 by Laura Nao  |   News & Events

Linux Kernel 6.6 has arrived, bringing a significant amount of new features and performance enhancements. Collabora has actively contributed many patches, including work on MediaTek and Rockchip.

Kernel 6.6: Long-awaited features and enhanced hardware support

X.Org Developer's Conference 2023

October 12, 2023 by Kara Bembridge  |   News & Events

The fall conference season continues next week with the X.Org Developer's Conference, taking place from October 17 to 19 in A Coruna, Spain. Sponsored by Collabora, this event brings together developers with an interest in open graphics.

X.Org Developer's Conference 2023

Pressing play on GStreamer Conference 2023

September 21, 2023 by Kara Bembridge  |   News & Events

Sunny Spain will have multimedia developers on speed dial next week for the 11th edition of the GStreamer Conference, taking place at the Palexco Convention Centre in A Coruña from September 25 to 26.

Pressing play on GStreamer Conference 2023

Perfecting Open Source Recipes in Paris

September 19, 2023 by Kara Bembridge  |   News & Events

The world-renowned culinary scene in The City of Light will be getting a pack of different types of chefs next week for Kernel Recipes and Embedded Recipes. Kernel Recipes kicks off on September 25, then Embedded Recipes from September 28 to 29.

Perfecting Open Source Recipes in Paris

Empowering Open Source at IBC 2023

September 11, 2023 by Kara Bembridge  |   News & Events

Collabora is headed to Amsterdam! This year, we will be showcasing some of our recent work on the DAB protocol, as well as the software integration of LCEVC, MPEG's novel enhancement codec, into the GStreamer multimedia framework.

Empowering Open Source at IBC 2023

Monado SLAM datasets now available

September 11, 2023 by Mateo de Mayo  |   News & Events

The Monado SLAM datasets (MSD) are egocentric visual-inertial SLAM datasets recorded to improve the Basalt-based inside-out tracking component of the Monado project.

Monado SLAM datasets now available

Video codecs: Adding AV1 stateless video decoder support to Linux

September 07, 2023 by Benjamin Gaignard  |   News & Events

The latest mainline Linux kernel (v6.5) includes 22 patches that enable support for the AV1 uAPI and for two stateless video decoders: one for the Rockchip RK3588 and one for MT8195, a MediaTek SoC.

Video codecs: Adding AV1 stateless video decoder support to Linux

Linux kernel 6.5: USB4v2 and Wifi7 have arrived

August 30, 2023 by Adrian Larumbe  |   News & Events

The 6.5 release is here and it comes with many changes. As is often the case, Collabora has been actively involved in the submission of patches, mostly in the task of hardware enablement for Mediatek and Rockchip SoCs.

Linux kernel 6.5: USB4v2 and Wifi7 have arrived

Ready to All Systems Go!

August 23, 2023 by Kara Bembridge  |   News & Events

Set in the captivating city of Berlin, All Systems Go! is ready to explore foundational user-space Linux technologies after a 4-year hiatus.

Ready to All Systems Go!

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Upcoming Events

Here are the events we'll be attending in the coming weeks – come say hello!

AGL All Member Meeting

July 17-18, Berlin, Germany

 

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