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today's leftovers

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  • POWER9 + ARM64 Performance For Dav1d 0.8 AV1 Decoding - Phoronix

    With last week's release of dav1d 0.8 for CPU-based AV1 video decoding we provided a number of x86_64 benchmarks while questions were raised around the ARM64 and POWER9 performance. Here are such benchmarks for those wondering about the AV1 video decoding speed on those architectures.

  • Mesa 21.0 Is Now Working With Haiku OS For Software OpenGL Rendering

    BeOS-inspired Haiku OS can now run with Mesa 21.0 well using the latest development code.

    A number of patches worked on for Haiu OS back for Mesa 20.x were freshened up and with some extra tweaking and code cleaning those patches have now been merged for Mesa 21.0. This includes factoring out a lot of the OpenGL legacy dispatch code and a lot of cleanups around the Softpipe driver handling.

  • Element: The Greatest Way To Access Matrix - YouTube

    I've been really liking Matrix recently and one of the biggest things helping that is that the main client called Element is actually really solid, it does have a few usability issues that need to be sorted out but right now it's still an amazing way to try out the platform.

  • Ubuntu Fridge | Call for Nomination: Local Communities Research Committee

    The Community Council has concluded that we need a new evaluation of the Ubuntu Local Communities project itself and this should be done by a Local Communities Research Committee.

    You can read the thoughts behind this call and what we are looking for on the Community Hub:
    https://discourse.ubuntu.com/t/local-communities-research-committee/20186

  • Wikipedia is 20, and its reputation has never been higher

    Yet Wikipedia is an oddity. It defies the Silicon Valley recipe for success. The site has no shareholders, has generated no billionaires and sells no advertising. Today’s aspiring tech giants burn vast quantities of investors’ money subsidising taxi rides (Uber) or millennial messaging (Snap) in pursuit of “scale”. Wikipedia grew organically, as more and more ordinary people decided to contribute. The site has its roots in the techno-optimism that characterised the internet at the end of the 20th century. It held that ordinary people could use their computers as tools for liberation, education and enlightenment.

    Like most Utopian thinking, the idea of an amateur encyclopedia was, for many years, treated as a bit of a joke. “A few endorse Wikipedia heartily. This mystifies me,” wrote a former president of the American Library Association in 2007. “A professor who encourages the use of Wikipedia is the intellectual equivalent of a dietician who recommends a steady diet of Big Macs with everything,” he sneered. Even now, after numerous academic studies highlighting its reliability, Wikipedia still lacks the gravitas and authority of older encyclopedias like “Britannica”, which are written by paid academic experts rather than amateurs. Schools, universities and The Economist’s fact-checkers frown on relying on it.

  • PHP 8.0 Is Too Fresh For Fedora 34 That It Will Be Punted To F35 In The Autumn - Phoronix

    While Fedora has been well known for years in always shipping the very latest packages in its distribution as of release even if it means using the likes of a near-final GCC compiler pre-release, developers have decided to postpone the shipping of PHP 8.0 until the autumn with their Fedora 35 release.

    PHP 8.0 was released at the end of November with many new features and changes. While it released in plenty of time for getting it into Fedora 34 that is due out this spring, the Fedora developers have decided to instead focus on shipping PHP 8.0 in the fall with the succeeding Fedora 35 release.

  • Java Generics With Upper and Lower Bounds Simply Explained

    Generics in Java and especially such with upper and lower bounds can be confusing even though they are otherwise very useful.

  • What Fonio, or any other food, should share with serious digital standards

    What Yolélé is doing seems too good, and too important to me, to not wish that it is really future-proof.

    If Yolélé goes bankrupt, something that again I do not wish to them, what happens to their proprietary system? Will it be lost in some legal limbo, where noone else can resume the good fight without reinventing lots of wheels, because that “intellectual property” is locked?

    What if Yolélé ends up exactly like scores of competitors of Facebook or Google, that is bought with a mountain of cash, for the only reason to shut it down, in order to make much bigger mountains of cash?

    A good way to prevent such outcomes, maybe the oly one, would be for Yolélé to become like email, or other digital standards that are ubiquitous exactly because they are impossible to really buy out. Yolélé should “configure” itself, as soon as possible, to “die in Open Source fashion”](/2019/02/what-should-happen-when-an-organization-dies/).

  • Intel Preparing New Driver Option To Disable GPU Security Mitigations - Phoronix

    Stemming from the renewed attention this week of Haswell GT1 graphics being broken for the past half-year under Linux with the latest versions of the kernel, a revised patch was sent out to restore that graphics support for low-end Haswell Celeron/Pentium processors. As part of that, a new option is being introduced to allow disabling security mitigations of the Intel graphics driver.

    This patch was sent out on Saturday that fixes up the Haswell GT1 support following the public attention this week over the low-end Haswell graphics support managing to be broken for the past several kernel release cycles while a prior version of that patch has been floating on the bug report thread for weeks.

  • L1d Cache Flushing On Context Switch Trying Again But More Conservative In 2021 - Phoronix

    Coming out in early 2020 were patches by an Amazon engineer to implement flushing the L1 data cache on context switching in the name of security given the various data sampling vulnerabilities. That work so far has been rejected from the mainline kernel but today was updated and makes it harder to enable and thus moving forward could stand chances to finally see the opt-in functionality merged to mainline.

    This opt-in L1d flushing on context switching tried for the Linux 5.8 kernel but at the time was rejected by Linus Torvalds as "beyond stupid", big performance implications, and not necessarily working out as desired. That L1d flushing work was since revised but hasn't yet made it into the mainline kernel as of Linux 5.11.

More in Tux Machines

Let's Try Debian Unstable

You may have been familiar with the name Debian Unstable also known as Sid and may want to try it. As an Ubuntu user, this curiosity is nothing weird, as every release of Ubuntu itself is created from it, and many persons around you may talk about it pretty often. The secret is, there is no image file to download for it, so you cannot install it as an operating system. This is why I make this simple guide to invite you to try Debian Unstable on your computer. Let's go! [...] You must have a computer with Debian Stable installed. For example, you may install Debian in a virtual machine as it counts as one computer. At the time I write this, Stable is Debian 10. Next time, Stable will be Debian 11. If you do not have one yet, download Debian 10, and install it to your computer. Please be aware that doing this will require you large data transfer and also time. As an example,in an expe riment it requires ~2GB download, ~4GB storage, and no less than 4 hours to finish. [...] Finally, post-upgrade may introduce you to multiple packages need to be removed. This can be known by running simply $ sudo apt-get install without argument. It may say "some packages need to be removed by command line apt-get autoremove. Read more

today's howtos

  • HOWTO Make Mozilla Firefox Blazing Fast On Linux

    The Firefox web browser is, by default, much, much slower than it can be on Linux. There is, luckily, several ways to make it a whole lot faster by changing one or more configuration options that are not so easy to find or understand. Newly released Firefox 88 made it easier, though you can make older Firefox versions and Firefox LTS versions faster with some trickery. Here's the options you have and the performance they provide.

  • How to Install Guider Linux Performance Analyzer on Ubuntu 20.04

    Monitoring the real-time state and behavior of the system and each of its components is crucial for any system administrator. Guider is an open-source performance analyzing tool for Linux operating systems. It is designed to measure the use of system resources, analyze it and improve the performance of the operating system. In this tutorial, I will show you how to install and use Guider on Ubuntu 20.04.

  • How to Uninstall Chromium and Get Rid of It From Your Computer

    Chromium is the open-source web browser project used by Google to create Google Chrome. It has an interface and functionality similar to Chrome, allowing you to navigate the Internet and take advantage of privacy features. You can set it up on any operating system, including Windows and Mac. It’s also possible to install Chromium on Linux.

  • How to Write a Shell Script in Ubuntu 20.04 LTS

    A shell script is a Linux-based script in which commands are written, and when a user executes the script, all those commands that are in the script are executed one after another. Think of it this way: You have a task you need to do that requires a certain number of commands to be written by the user, so it’s difficult to write and then execute those commands one at a time, that’s where the shell script comes in. To accomplish this task, simply write all of these commands into a single script and save that script file somewhere. Then, when the user needs to do a particular task, all they have to do is run the saved script and the task is done without having to write all the commands again one by one. The shell is an interpreter of the commands that the user writes.

  • How to display GUI dialogs in bash script using Zenity

    We all know that Linux bash scripts are a real strength of Linux. Often we want to display a graphical user interface (GUI) in our scripts to make interaction with users easier. GUI makes any script more user-friendly and beautiful. For GTK in shell scripts, there are many options and tools available in Linux. In this article, we will show you how to use Zenity to display GUI dialogs in Bash scripts. Zenity is an open-source application for displaying simple GUI in shell scripts. It makes scripts more user-friendly by displaying GTK+ dialogs. Zenity is a handy command-line tool for modern shell scripting. Zenity is easy to use and a cross-platform application.

  • Steven Pritchard: Dealing with old ssh implementations

    Over the last several releases, Fedora has removed support for old, broken crypto algorithms. Unfortunately, this makes it harder to deal with old devices or servers that can't easily be upgraded. For example, I have a switch that I can't connect to with the ssh on Fedora.

The 5 Best Linux PDF Editors You Should Try

Finding a good and reliable PDF editor is a nerve-racking job with all these unwanted opinions flying around on the internet. Everyone has different preferences and use cases for their PDF editor, and choosing the one that suits you the best is important. The number of applications available for Linux-based operating systems is immeasurable. But when it comes to PDF editors, only a handful of the apps top the chart. In this guide we have curated a list of the best Linux PDF editors that you can download for free on your computer. Read more

How to Upgrade to Ubuntu 21.04 from Ubuntu 20.10 (Groovy to Hirsute)

Here are the steps on how to upgrade your Ubuntu 21.04 from Ubuntu 20.10 (Groovy Gorilla to Hirsute Hippo). Read more