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Metrics for test suite comprehensiveness

November 23, 2018 by Alexandros Frantzis  |   Blog

How can we measure the comprehensiveness of a test suite? Code coverage is the standard metric used in the industry and makes intuitive sense. However, it can often present some difficulties for large scale surveys.

Metrics for test suite comprehensiveness

Gaining eBPF vision: A new way to trace Linux filesystem disk requests

November 21, 2018 by Gabriel Krisman Bertazi  |   Blog

A real-world use case of eBPF tracing to understand file access patterns in the Linux kernel and optimize large applications.

Gaining eBPF vision: A new way to trace Linux filesystem disk requests

FOSS in Toulouse

November 16, 2018 by Mark Filion  |   News & Events

After a great time in Vancouver, Collaborans are headed this weekend to southern France to attend and speak at the 2018 edition of Capitole du Libre, a weekend dedicated to free and Open Source software!

FOSS in Toulouse

Linux Plumbers in Vancouver

November 12, 2018 by Mark Filion  |   News & Events

Widely recognized as the premier event for developers working at all levels of the Linux kernel's plumbing layer and beyond, this year's edition of LPC is jam-packed with microconferences, a refereed track, a Kernel Summit track, multiple BoFs, and more.

Linux Plumbers in Vancouver

Daniel Stone featured in Linux Format!

November 07, 2018 by Mark Filion  |   News & Events

While our regular column (this time on Video4Linux, written by Ezequiel Garcia) is alive and well in this month's issue of LXF, there's also something else worth highlighting: a 6-page interview with none other than Collabora's Graphics lead, Daniel Stone!

Daniel Stone featured in Linux Format!

Quick hack: Speed up your GitLab CI

November 06, 2018 by Xavier Claessens  |   Blog

Did you know you could register your own PC, or a spare laptop collecting dust in a drawer, to get instant CI going on GitLab? Not only will you get faster CI, but you'll also reduce the queue on the shared runner for others!

Quick hack: Speed up your GitLab CI

Introducing Zink, an OpenGL implementation on top of Vulkan

October 31, 2018 by Erik Faye-Lund  |   Blog

For the last month or so, I've been playing with a new project during my work at Collabora, and as I've already briefly talked about at XDC 2018, it's about time to talk about it to a wider audience.

Introducing Zink, an OpenGL implementation on top of Vulkan

Edinburgh, continued!

October 25, 2018 by Mark Filion  |   News & Events

After three great days attending and catching up with the community at ELCE, Collaborans are continuing their stay in Edinburgh to take part in the GStreamer Conference & Hackfest, the Linux Media Summit and the Automated Testing Summit.

Edinburgh, continued!

Linux Kernel 4.19

October 22, 2018 by Helen Koike  |   News & Events

As the curtains rose on opening day of Embedded Linux Conference Europe & Open Source Summit Europe in Edinburgh, the latest release of the Linux Kernel, 4.19, was made available by Greg Kroah-Hartman. Collaborans were once again very active.

Linux Kernel 4.19

On the low adoption of automated testing in FOSS

October 18, 2018 by Alexandros Frantzis  |   Blog

For projects of any value and significance, having a comprehensive automated test suite is nowadays considered a standard software engineering practice. Why, then, don't we see more prominent FOSS projects employing this practice?

On the low adoption of automated testing in FOSS

Embedded Linux in Edinburgh

October 18, 2018 by Mark Filion  |   News & Events

Next week, Collabora will be sponsoring, exhibiting & speaking at Embedded Linux Confererence Europe in Edinburgh, Scotland. Now in its 13th year, ELCE is the premier vendor-neutral technical conference for companies and developers using embedded Linux.

Embedded Linux in Edinburgh

Automotive Grade Linux AMM

October 15, 2018 by Mark Filion  |   News & Events

This week, two Collaborans will be in Dresden, Germany to take part in the AGL All Member Meeting. George Kiagiadakis and Daniel Stone will be in attendance, with the former also giving a presentation on the latest happenings in upstream multimedia.

Automotive Grade Linux AMM

Automatic regression handling and reporting for the Linux Kernel

March 14, 2024 by Ricardo Cañuelo Navarro  |   Blog

In continuation with our series about Kernel Integration we'll go into more detail about how regression detection, processing, and tracking can be improved to provide a better service to developers and maintainers.

Automatic regression handling and reporting for the Linux Kernel

Almost a fully open-source boot chain for Rockchip's RK3588!

February 21, 2024 by Eugen Hristev  |   Blog

Now included in our Debian images & available via our GitLab, you can build a complete, working BL31 (Boot Loader stage 3.1), and replace the closed binary blob with an open-source binary that anyone can compile.

Almost a fully open-source boot chain for Rockchip's RK3588!

What's the latest with WirePlumber?

February 19, 2024 by George Kiagiadakis  |   Blog

Back in 2022, after a series of issues were found in its design, I made the call to rework some of WirePlumber's fundamentals in order to allow it to grow. So where are we now? And what's next? Let's dive in!

What's the latest with WirePlumber?

DRM-CI: A GitLab-CI pipeline for Linux kernel testing

February 08, 2024 by Helen Koike  |   Blog

Continuing our Kernel Integration series, we're excited to introduce DRM-CI, a groundbreaking solution that enables developers to test their graphics subsystem patches across numerous devices within the community's shared infrastructure.

DRM-CI: A GitLab-CI pipeline for Linux kernel testing

Persian Rug, Part 4 - The limitations of proxies

January 23, 2024 by Edmund Smith  |   Blog

This is the fourth and final part in a series on persian-rug, a Rust crate for interconnected objects. We've touched on the two big limitations: lack of deletion and lack of enforced matching between proxies and containers. Let's look at other solutions.

Persian Rug, Part 4 - The limitations of proxies

How to share code between Vulkan and Gallium

January 16, 2024 by Faith Ekstrand  |   Blog

One of the key high-level challenges of building Mesa drivers these days is figuring out how to best share code between a Vulkan driver and a Gallium driver when Gallium isn't really capable of implementing Vulkan. Here's how.

How to share code between Vulkan and Gallium

Google Open Source Peer Bonus 2023

December 19, 2023 by Mark Filion  |   Blog

Google Open Source have chosen their second group of winners for the 2023 Google Open Source Peer Bonus Program, and Arnaud Ferraris, Senior Software Engineer at Collabora and Mobian project lead, is among the recipients!

Google Open Source Peer Bonus 2023

A new kselftest for verifying driver probe of Devicetree-based platforms

December 11, 2023 by Nícolas F. R. A. Prado  |   Blog

As we continue working to improve the kernel integration landscape on multiple fronts, this also means making better tests available for all. Working closely with the community, we have now landed a new, ready-to-use, kselftest in mainline Linux.

A new kselftest for verifying driver probe of Devicetree-based platforms

Thoughts on PipeWire 1.0 and beyond

December 06, 2023 by George Kiagiadakis  |   Blog

We can now confidently say that PipeWire is here to stay. But of course it is not the end of the journey. There are many new areas to explore going forward, especially in WirePlumber and the ecosystem that builds around PipeWire.

Thoughts on PipeWire 1.0 and beyond

Persian Rug, Part 3 - The warp and the weft

December 05, 2023 by Edmund Smith  |   Blog

Our look at the Rust crate for interconnected objects continues, as we examine how persian-rug really does tie the room together by providing a convenient container solution with a safety net to go along with it.

Persian Rug, Part 3 - The warp and the weft

Advocating a better Kernel Integration for all

December 01, 2023 by Gustavo Padovan  |   Blog

The testing ecosystem in the Linux kernel has been steadily growing, but are efforts sufficiently coordinated? How can we help developers and maintainers integrate code more efficiently? How can we mitigate maintainer burnout?

Advocating a better Kernel Integration for all

WirePlumber: Exploring Lua scripts with Event Dispatcher

October 30, 2023 by Ashok Sidipotu  |   Blog

With the upcoming 0.5 release, WirePlumber's Lua scripts will be transformed with the new Event Dispatcher. More modular and extensible with very little redundant processing, they will look and feel completely different.

WirePlumber: Exploring Lua scripts with Event Dispatcher

Linaro Virtual Connect - Fall 2021

September 01, 2021 by Mark Filion  |   News & Events

September's busy conference schedule kicks off next week with the Fall edition of Linaro Virtual Connect. Join us as we look at how to master your PipeWire streams with WirePlumber, and de-mystify GFX virtualization with VirGL!

Linaro Virtual Connect - Fall 2021

Reverse-engineering the Mali G78

July 20, 2021 by Alyssa Rosenzweig  |   News & Events

After a month of reverse-engineering the Arm Mali G78, we’re excited to release documentation on the Valhall instruction set, available as a PDF, as well as a Valhall assembler and disassembler to be used as a reverse-engineering aid.

Reverse-engineering the Mali G78

Kernel 5.13: Growing team and KernelCI hackfest

July 08, 2021 by Gabriel Krisman Bertazi  |   News & Events

Collabora's team working directly on the Linux kernel is growing. Collaborans continue to expand on their efforts to close the gap between hardware support on vendor trees and mainline.

Kernel 5.13: Growing team and KernelCI hackfest

A very successful first KernelCI hackfest

June 21, 2021 by Shreeya Patel  |   News & Events

Earlier this month, Collabora took part in the very first KernelCI hackfest, initiated as a joint effort with the Google Chrome OS team. Here's a look at what led to our participation and what was accomplished.

A very successful first KernelCI hackfest

Growing for the road ahead

June 21, 2021 by Erica Ryoo  |   News & Events

Despite the many obstacles brought on by the pandemic, Collabora has continued to grow its teams for the road ahead. Join us in welcoming Kiril, Benjamin, Daniel, Shreeya, Ariel, Nicolas and James!

Growing for the road ahead

Wine on Wayland meets Vulkan, multi-monitor support & more

June 07, 2021 by Alexandros Frantzis  |   News & Events

We first announced our work on the driver last December, and posted an update earlier this year. We are now happy to announce a second update for this driver, adding several major features which increase its scope and utility.

Wine on Wayland meets Vulkan, multi-monitor support & more

A libweston-based compositor for Automotive Grade Linux

June 02, 2021 by Marius Vlad  |   News & Events

Simplifying AGL's existing Wayland-based graphical stack and avoiding the use of modules that aren't maintained upstream has lead to the creation of a new compositor based on libweston, bringing more reliable and fine-grained system control.

A libweston-based compositor for Automotive Grade Linux

Bridging the OpenGL and Vulkan divide

May 27, 2021 by Rohan Garg  |   News & Events

Thanks to a new, low overhead extension in Mesa, OpenGL and Vulkan applications can now talk to each other, bringing more flexibility to application developers while easing the transition path between the industry-standard Khronos® APIs.

Bridging the OpenGL and Vulkan divide

Kernel 5.12: Working to close the gap

May 04, 2021 by Ariel D'Alessandro  |   News & Events

With their latest contributions all around the kernel, notably to the Video4Linux APIs and hardware enablement, Collaborans continue to expand on their efforts to close the gap between hardware support on vendor trees and mainline.

Kernel 5.12: Working to close the gap

PanVk: An Open Source Vulkan driver for Arm Mali Midgard and Bifrost GPUs

March 25, 2021 by Boris Brezillon  |   News & Events

The Panfrost project started as a reverse engineering effort to understand Arm Mali Midgard and Bifrost GPU internals. With the driver getting more and more mature, the natural next step was to work on an Open Source Vulkan driver for those GPUs.

PanVk: An Open Source Vulkan driver for Arm Mali Midgard and Bifrost GPUs

Linaro Virtual Connect - Spring 2021

March 22, 2021 by Mark Filion  |   News & Events

Join us this week at the Spring edition of Linaro Virtual Connect, as we discuss bringing stateless video decoding support to Linux, and take a look at where we are, and what's to come, for open drivers for Arm GPUs.

Linaro Virtual Connect - Spring 2021

OpenGL on DirectX: Conformance & upstreaming of the D3D12 driver

March 10, 2021 by Erik Faye-Lund  |   News & Events

One year ago, we announced a new partnership with Microsoft to build OpenGL mapping layers to DirectX 12. Today, we're excited to share that the we have passed the OpenGL 3.3 conformance tests, and have now upstreamed the D3D12 driver in Mesa 3D!

OpenGL on DirectX: Conformance & upstreaming of the D3D12 driver

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