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GNOME: Mutter, Shell, Fractal and More

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  • Georges Basile Stavracas Neto: This Month in Mutter & GNOME Shell | May and June 2020

    The volunteers and contributors working on Mutter and GNOME Shell have been busy in the past couple of months — so much so that we didn’t have bandwidth to write the May development report!

    As a consequence, this development summary will have an above average number of changes to highlight.

  • Jonas Ådahl: Splitting up the Frame Clock

    Readers be advised, this is somewhat of a deep dive into the guts of Mutter. With that out in the open, lets start!

    Not too long ago mutter saw a merge request land, that has one major aim: split up the frame clock so that when using the Wayland session, each CRTC is driven by its own frame clock. In effect the goal here is that e.g. a 144 Hz monitor and a 60 Hz monitor being active in the same session will not have to wait for each other to update, and that the space they occupy on the screen will draw at their own pace. A window on the 144 Hz monitor will paint at 144 Hz, and mutter will composite to the monitor at 144 Hz, while a window on the 60 Hz monitor will paint at 60 Hz and Mutter will composite to the monitor at 60 Hz.

  • GNOME Shell + Mutter Off To A Good Start For Summer 2020

    The GNOME Shell and Mutter have seen a lot of work come together nicely over the past two months.

    The GNOME Shell blog is out with their recap of development work that landed over the months of May and June.

  • Important Patches Land To Improve GNOME's Multi-Monitor Experience With High Refresh Rates

    If you have say a 144Hz gaming monitor as well as a conventional 60Hz secondary display or any other multi-monitor configuration with different refresh rates, there is now another reason to get excited for GNOME 3.38.

    [...]

    This is very important for improving the multi-monitor experience with such configurations as up to now capping the refresh rate to match is a less than desirable experience. This work landed today in Mutter for September's release of GNOME 3.38. This next release is shaping up to be quite exciting with the plethora of optimizations to already land thus far. It is important to note that this multi-monitor improvement only benefits the GNOME Wayland session and not under X11.

  • Alejandro Domínguez: Refactoring Fractal: Remove Backend (II)

    So the time came for removing the Backend struct finally! The bits that were left in the previous patch have been removed, which were not just state but a ThreadPool and a cache for some info. Those were fitted in AppOp without too much thought on consistency of it.

    But what does this actually mean for the internal structure of the code?

    The result is that any state or utility that was needed for requests and modifying the UI is held only from a single place in the app. With it, the loop in Backend has been removed as well, and instead of sending messages to the receiver loop from the backend, those are sent from a spawned thread (to keep the UI thread unlocked) that sends the HTTP request directly and retrieves the response. Put in a simpler way, I replaced message passing to the backend loop with spawning threads, which was done anyways in the loop to be able to have multiple requests at the same time.

    I acknowledge that doing this kind parallelism with system threads in 2020 is a very crude way of doing the task, to say the least, but using coroutines requires a significant amount of work in other areas of the app right now.

  • GSoC 2020: the first milestone

    During the community bonding period, I had a video call with my absolutely amazing mentor Alberto, who told me about GNOME culture, and about his inspiring journey with GNOME as contributor. In the last month, I have been welcomed by the community and am very proud to be contributing to GNOME.
    Here’s a summary of the technical work that has been done in the last month.

  • Marcus Lundblad: Summer Maps

    Since it's been a while since the last post, I thought I should share a little update about some going ons with Maps.

More in Tux Machines

Debian Janitor: 8,200 landed changes landed so far

The Debian Janitor is an automated system that commits fixes for (minor) issues in Debian packages that can be fixed by software. It gradually started proposing merges in early December. The first set of changes sent out ran lintian-brush on sid packages maintained in Git. This post is part of a series about the progress of the Janitor. The bot has been submitting merge requests for about seven months now. The rollout has happened gradually across the Debian archive, and the bot is now enabled for all packages maintained on Salsa , GitLab , GitHub and Launchpad. Read more

Optimised authentication methods for Ubuntu Desktop

Still counting on passwords to protect your workstation? When set up properly, alternatives to passwords provide a streamlined user experience while significantly improving security. These alternative authentication methods can also easily be combined to create a custom and adaptive authentication profile. This whitepaper introduces three popular authentication methods that provide a solid alternative to passwords. Perhaps you’d like to configure your laptop for login using a YubiKey hardware token connected to a dock. Another option could be to login with a Duo push notification when not connected to the dock, but use a Google Authenticator one-time password when no network is available. Maybe you need a separate hardware token just for ssh authentication, and you always need to keep a long, complex password for emergency authentication should all other methods fail. All of these scenarios can be easily configured within Ubuntu. Read more

Open Hardware: Arduino, RISC-V and 96Boards

  • Arduino-controlled robot arm is ready to play you in a game of chess

    If you’re tired of playing chess on a screen, then perhaps you could create a robotic opponent like Instructables user Michalsky. The augmented board runs micro-Max source code, enabling chess logic to be executed on an Arduino Mega with room for control functions for a 6DOF robotic arm. The setup uses magnetic pieces, allowing it to pick up human moves via an array of 64 reed switches underneath, along with a couple shift registers. The Mega powers the robot arm accordingly, lifting the appropriate piece and placing it on the correct square.

  • New RISC-V CTO On Open Source Chip Architecture’s Global Data Center Momentum

    With more big international players on board, the foundation's new head of technology sees signs of "state of the art moving forward."

  • Snapdragon 410 based 96Boards CE SBC gets an upgrade

    Geniatech has launched a Linux-ready, $109 “Developer Board 4 V3” compliant with 96Boards CE that offers a Snapdragon 410E, GbE, 3x USB, 802.11ac, GPS, and-25 to 70°C support. Geniatech has released a V3 edition of its 96Boards CE form-factor Developer Board 4 SBC, the third update of the Development Board IV we covered back in 2016. Starting at $109, the Developer Board 4 V3 still runs Linux, Android, and Windows 10 IoT Core on Qualcomm’s 1.2GHz, quad -A53 Snapdragon 410m, although it has been upgraded to the 10-year availability Snapdragon 410E. Geniatech also sells a line of Rockchip based SBCs, among other embedded products.

Audiocasts/Shows: Linux in the Ham Shack and Linux Headlines

  • LHS Episode #360: Zapped

    Welcome to the 360th episode of Linux in the Ham Shack. In this short-topic show, the hosts discuss 1.2GHz distance records, a hybrid antenna for geosynchronous satellite operation, data mode identification for your smart phone, being pwned, Ubuntu 20.04.1, LibreOffice, HamClock and much more. Thanks for listening and hope you have a great week.

  • LHS Episode #361: The Weekender LIV

    It's time once again for The Weekender. This is our bi-weekly departure into the world of amateur radio contests, open source conventions, special events, listener challenges, hedonism and just plain fun. Thanks for listening and, if you happen to get a chance, feel free to call us or e-mail and send us some feedback. Tell us how we're doing. We'd love to hear from you.

  • 2020-08-14 | Linux Headlines

    Google could be extending its Firefox search royalty deal, PyPy leaves the Software Freedom Conservancy, Ubuntu puts out a call for testing, Linspire removes snapd support, Microsoft showcases its open source contributions, and Facebook joins The Linux Foundation.