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Monday, 16 Sep 19 - Tux Machines is a community-driven public service/news site which has been around for over a decade and a half and primarily focuses on GNU/LinuxSubscribe now Syndicate content

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  • 07/07/2019 - 5:40pm
    JamieCull
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today's howtos and programming

Filed under
Development
HowTos

Linux 5.4 and Linux Foundation's Reactive Foundation

Filed under
Linux
  • Google's FS-VERITY File Authentication Called For Inclusion In Linux 5.4 Kernel

    Linux kernel engineer Eric Biggers of Google has sent in a pull request adding FS-VERITY support to the Linux 5.4 but it remains to be seen if Linus Torvalds is content with pulling the code at this stage.

    FS-VERITY is the code Google has been working on for a while now in the context of Android. The focus is on providing transparent integrity/authenticity support for read-only files on an otherwise writable file-system. See this presentation to learn more on this file-based authenticity protection.

  • Linux 5.4 Brings Working Temperature Reporting For AMD Ryzen 3000 Series CPUs

    Due to a combination of poor timing and an oversight at AMD, the CPU temperature reporting under Linux for the Ryzen 3000 series processors isn't in order until this new Linux 5.4 cycle. Back at the Ryzen 3000 series launch event I was told everything was "all good" from the Linux support perspective for thermal monitoring, after having been closely following the situation for past Zen CPUs and ended up myself adding the Linux CPU temperature monitoring support for Threadripper 2 among other hudles in the past. That all-good though just ended up meaning that there is no Tcontrol offset needed for these new CPUs, which is great news no longer needing the temperature offset by an arbitrary amount. But the oversight was the Family 17h Model 70h ID was never added to the AMD k10temp driver. As a result, temperature monitoring wasn't actually working and took an extra kernel cycle before this trivial addition landed.

  • All about Reactive Foundation,The Linux Foundation's new baby

    The Linux Foundation has announced the launch of the Reactive Foundation, a community of leaders established to accelerate technologies for building the next generation of networked applications. The foundation is made up of Alibaba, Lightbend, Netifi and Pivotal as initial members and includes the successful open source RSocket specification, along with programming language implementations.

    The aim of reactive programming is to build applications that maintain a consistent user experience regardless of traffic on the network, infrastructure performance and different end-user devices (computers, tablets, smartphones). Reactive programming uses a message-driven approach to achieve the resiliency, scalability, and responsiveness that is required for today's networked cloud-native applications, independent of their underlying infrastructure. The Reactive Foundation establishes a formal open governance model and neutral ecosystem for supporting open source reactive programming projects.

    [...]

    The aim of reactive programming is to build applications that maintain a consistent user experience regardless of traffic on the network, infrastructure performance and different end-user devices (computers, tablets, smartphones). Reactive programming uses a message-driven approach to achieve the resiliency, scalability, and responsiveness that is required for today's networked cloud-native applications, independent of their underlying infrastructure. The Reactive Foundation establishes a formal open governance model and neutral ecosystem for supporting open source reactive programming projects.
    "From the beginning of our work on RSocket during my time at Netflix, our intent was to have an open system that encouraged broad adoption, which is essential for networking technology. We're thrilled to be hosted at the Linux Foundation with commitment from leaders and disruptors in the industry, and are excited to make progress enabling reactive programming," said Ryland Degnan, Co-Founder, and CTO at Netifi and Foundation community chair.

cmus – free terminal-based audio player

Filed under
Software

It took me a few years to appreciate console-based software. Repairing a broken system using the ubiquitous vi text editor was a turning point in my Linux journey. Now I spend a lot of time at the terminal, and listening to music. Best combine the two!

When it comes to console-based music software, I really admire musikcube, a wonderful audio engine, library, player and server written in C++.

This review looks at an alternative to musikcube. It’s called cmus. It shares many similarities with musikcube. Both are designed to run on a text-only user interface, reducing the resources required to run the application.

cmus is written in C.

Read more

Also: Rclone Browser Fork With Fixes And Enhancements

GNU Linux-libre 5.3-gnu

Filed under
GNU
Linux
GNU Linux-libre 5.3-gnu sources and tarballs are now available at
<http://www.fsfla.org/selibre/linux-libre/download/releases/5.3-gnu/>.
It didn't require any deblobbing changes since -rc7-gnu, the first
published rc-gnu.  Freesh binaries are already available!, thanks to
Jason Self; others are on the way.


Besides recognizing new false positives (sequences that our blob hunter
would report as suspicious, but that are neither blobs nor requests for
blobs), updating the deblobbing scripts for 5.3 required adjusting
cleaned up drivers for updated blob names, recognizing one new Free
piece of firmware with binary and corresponding sources embedded in the
kernel sources, and disabling blob loading introduced in a few drivers:
QCOM, DRM (HDCP), Allegro-DVT, and Meson-VDEC.

This last one was particularly disappointing: the firmware sources were
supposed to be available from LibreELEC, and though the link to the
alleged sources there is broken, I managed to find the "source" repo
containing them, only to find out the "source" was just a binary blob
encoded in C as an array of char, just like Linux used to do back when I
got involved with Linux-libre.  Oh well...  Request disabled...

If anyone can find Freely-licensed actual source code for that, or for
any other file whose loading we disable, please let us know, so that we
can refrain from disabling its loading.


For up-to-the-minute news, join us on #linux-libre of irc.gnu.org
(Freenode), or follow me (@lxoliva) on Twister <http://twister.net.co/>,
Secure Scuttlebutt, GNU social at social.libreplanet.org, Diaspora* at
pod.libreplanetbr.org or pump.io at identi.ca.  Check my web page (link
in the signature) for direct links.


Be Free! with GNU Linux-libre.

Read more

Also: GNU Linux-Libre 5.3 Kernel Arrives for Those Seeking 100% Freedom for Their PCs

GNU Linux-libre 5.3 Continues Deblobbing & Dealing With Firmware Trickery

New WireGuard Snapshot Offers Better Compatibility With Distributions/Kernels

Filed under
GNU
Linux
Software
Security

WireGuard sadly isn't slated for the now-open Linux 5.4 merge window, but lead developer Jason Donenfeld has put out a new development snapshot of this open-source secure VPN tunnel.

Coming barely two weeks since the previous WireGuard snapshot, this newest development release isn't too heavy on the changes but the focus is on better portability/compatibility.

Read more

A Simple Review of GNOME 3.34

Filed under
GNOME
Reviews

That's all for now. As always, I love how simple and beautiful GNOME release announcement was. After testing in 3 days, I immediately like this version more than the previous one for the speed improvement and I hope Ubuntu and other distros adopt it soon. Ah, I forgot, regarding Ubuntu, good news for us: next October's Ubuntu Eoan Ermine will feature 3.34! Regarding GNOME, I don't know if this is coincidence or what, but this year's KDE Plasma is faster and smoother and so is GNOME. I think next GNOME 3.36 will be faster and better as well. Finally I would love to say thank you GNOME developers! You all did well in last 6 month.

How do you think about 3.34? Let me know in the comment section!

Read more

Also: Internet Speed Indicator for GNOME 3.34

PulseAudio 13 Released with Dolby TrueHD and DTS-HD Master Audio Support, More

Filed under
Linux
OSS

Released three months after the PulseAudio 12 series, PulseAudio 13 is here with support for Dolby TrueHD and DTS-HD Master Audio, support for the SteelSeries Arctis 5 USB headset, improved initial card profile selection for ALSA cards, as well as S/PDIF improvements for CMEDIA USB2.0 High-Speed True HD Audio.

The PulseAudio 13 series also adds several new module arguments, including "max_latency_msec" for module-loopback, "stream_name" for module-rtp-send, and "avoid_resampling" for module-udev-detect and module-alsa-card, and no longer uses persistent Bluetooth card profile choices by default, recommending users to use A2DP by default.

Read more

GNOME Firmware App Launches Officially to Make Updating Firmware Easier on Linux

Filed under
Linux
GNOME

Promising to make firmware updates easier to deploy, GNOME Firmware is a graphical application for power users that lets them check for new firmware for their devices, update or downgrade current firmware, as well as to install new firmware. GNOME Firmware is designed as an optional utility for GNOME users, as well as users of other desktop environments.

"GNOME Firmware is designed to be a not-installed-by-default power-user tool to investigate, upgrade, downgrade and re install firmware," said Richard Hughes in a blog post. "GNOME Software will continue to be used for updates as before. Vendor helpdesks can ask users to install GNOME Firmware rather than getting them to look at command line output."

Read more

Chuwi AeroBook review: Testing 5 Linux distributions

Filed under
Linux
Reviews

Chuwi is likely not a brand familiar to many, though the Chinese firm has established its abilities in producing budget-focused notebooks and tablets—essentially, attempting to provide a full Windows experience at a price point of an average Chromebook. Chuwi's upmarket Chuwi Aerobook could be the right price for an Ultrabook form factor at a $500 price point.

Support for Linux on fundamentally consumer hardware has improved considerably over the last decade, largely preventing the need to perform extensive manual configuration. In 2019, minor compatibility issues—tiny papercut-like problems that are harder to actually solve—can pop up for specific hardware configurations. Depending on the return policies of your preferred marketplace, it might be impossible or cost-prohibitive to return a product like this if it doesn't work with Linux.

Read more

New webpage for Plasma Desktop

Filed under
KDE

In my quest to improve the website of KDE, I updated the Plasma Desktop webpage. This is a huge improvement to the old website, which didn’t show any screenshots and didn’t list any Plasma features.

I already teased the improvements I made in the Plasma BoF in Milan to the Akademy.

The redesign got a lot of positive feedback by the Plasma team and after some small modifications the changes landed.

Read more

Can a Raspberry Pi 4 really replace your PC?

Filed under
Linux

I have written several times already about the recently-released Raspberry Pi 4 Model B (see my first impressions, how-to setup, my hands-on experience, and my thoughts two months in). Now I'm going to look at one of the practical aspects that I think a lot of people have been wondering about - is it (finally) good enough to use as an every-day desktop system?

We've been through this several times before, when the original Raspberry Pi, the Pi 2 and the Pi 3 came out - and each time the answer was "only if you have enough patience". Although the amount of patience required decreased each time, it was still too slow on many everyday tasks, or too limited in configuration (primarily memory) for most people to be satisfied using it. So maybe this time it will make the grade?

Read more

Stable kernels 5.2.15, 4.19.73, 4.14.144, 4.9.193, and 4.4.193

Filed under
Linux
  • Linux 5.2.15

    I'm announcing the release of the 5.2.15 kernel.

    All users of the 5.2 kernel series must upgrade.

    The updated 5.2.y git tree can be found at:
    git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git linux-5.2.y
    and can be browsed at the normal kernel.org git web browser:
    https://git.kernel.org/?p=linux/kernel/git/stable/linux-s...

  • Linux 4.19.73
  • Linux 4.14.144
  • Linux 4.9.193
  • Linux 4.4.193

Why Debian Is the Gold Standard of Upstream Desktop Linux

Filed under
Linux
Debian

If you don’t follow the fortunes of Linux distributions, you might think that the days of Debian’s dominance are long since gone. However, superficial appearances can be deceiving. Not only does Debian consistently appear in the top ten of Distrowatch’s page hit ranking, it’s used as the base of the majority of other distributions as well, far eclipsing rivals like Fedora and Red Hat or openSuse. In fact, Debian might be said to be the most influential distro ever.

That may seem an overstatement, but the figures are hard to argue with. For at least eight years, Debian has been by far the most dominant distribution. Some details of its dominance have changed, but the overall pattern has been constant. Without Debian, modern Linux would be vastly different.

Read more

Games: It Stares Back, Receiver, Beyond Blue, NARWHAR Project Hornwhale, Buoyancy, Overcooked and Shing!

Filed under
Gaming
  • It Stares Back, an RTS with a really wild style will be coming to Linux

    Always on the lookout for my next strategy game fix, I recently came across It Stares Back after it pulled my in due to the wild visuals.

    Currently, it's only available for Windows in Early Access on Steam. However, the developer confirmed to me on the Steam forum that it's planned for Linux just like their last game, Castle Battles. The Linux version should come once the game is complete.

  • Receiver, the experimental FPS from Wolfire Games had a big update recently

    Receiver is a name I've not heard in a long time, the indie FPS released back in 2013 by Wolfire Games and it's just seen a big update.

    There's no new enemies or levels in this update, instead Wolfire focused on the tech that runs the game. In this case it's the Unity game engine and they gave it quite a big update. It also adds in some graphical prettiness and other bits like that.

  • Ocean exploration game Beyond Blue has a new story trailer and voice cast reveal

    Beyond Blue, the near-future ocean exploration game from E-Line Media (publisher of Never Alone) has a new story teaser.

    If you've not heard of it before, this is not some survival game like Subnautica. Instead, it's a game about exploring the depths of our oceans. Think of it like Blue Planet: The Game, that sums it up quite well especially since they've teamed up with BBC Studios (who did the Blue Planet documentary).

  • NARWHAR Project Hornwhale, a really wacky shoot 'em up that reminds me of the Amiga days

    The developer of NARWHAR Project Hornwhale emailed in recently about their new arcade style shoot 'em up being released with Linux support. It's a bit wild.

    I'll admit the name, along with the setting of this thoroughly made me chuckle to no end. Space Narwhals that rule with an iron fist, with you playing as one of two Rays that shoot lasers? The damn Narwhals took away all the free milkshake, so naturally a rebellion happened. What's not to love about such a crazy setting?

  • Buoyancy, a city-builder where you manage a floating city has a Linux test build up

    Sometimes when you ask if a game is coming to Linux it's a no, others say it's planned and when it's Buoyancy the developer just puts up a build soon after asking.

    Yep, that's what happened here. After asking about Linux support on Steam, developer replied to say "yes". When asking if they knew when, they went ahead and uploaded a build. If only it was always that easy…

  • The latest Overcooked! 2 expansion sounds more crazy than ever with the Carnival of Chaos

    Overcooked! 2 is no doubt one of the best, most hilarious and most infuriating co-op experiences around all in one. It just got bigger again too, with another great sound DLC out now.

  • Fantastic looking beat 'em up Shing! confirmed to be releasing for Linux

    One we completely missed from Gamescom is Shing!, a new beat 'em up from developer Mass Creation releasing next year and it looks like it's going to be a lot of fun.

    Curiously, it appeared recently in my Steam searching with a SteamOS/Linux icon but the store page only has Windows system requirements. When going to message the developer, I checked the Steam forum and as expected someone asked about Linux support. The reply from the developer was a very clear "Yes - Shing will be available on Linux.".

    They're saying it's so good, they've called it a "beat-em-up 2.0". With Shing! Mass Creation say they're mixing in classic arcade-style gameplay with modern graphics and an innovative control scheme. This is not going to be a button basher, instead you use the right stick of a gamepad to directly control your weapon. It sounds good on paper but does it look good? Sure does! Take a look at their recent gameplay reveal:

today's leftovers

Filed under
Misc
  • Talking About Communities and ‘People Powered’ with Leo Laporte

    I have always had a bit of a soft spot for the TWiT team and more specifically Leo Laporte. Years ago I used to co-host FLOSS Weekly on their network and occasionally I pop over to the studio for a natter with Leo.

    With ‘People Powered: How communities can supercharge your business, brand, and teams‘ coming out, I thought it would be fun to hop over there. Leo graciously agreed and we recorded an episode of their show, Triangulation.

  • Linux Action News 123

    Speed is the big story around GNOME 3.34, two new major Firefox security features start to roll out, and we explain the CentOS 8 delay.

    Plus our thoughts on the PineTime, and more.

  • KaOS 19.09 Run Through

    In this video, we are looking at KaOS 19.09.

  • Congress Is Investigating Apple's Repair Monopoly

    For years, the independent repair community has said that Apple has engaged in anticompetitive behavior by refusing to sell parts to repair shops who are not “authorized” by the company. The company has also lobbied heavily against so called right-to-repair legislation, which would require it and other electronics companies to sell parts and tools to the general public. It has sued independent repair companies for using aftermarket and refurbished parts and worked with the Department of Homeland Security to seize unauthorized repair parts from small businesses both at customs and from individual shops. And, as the committee's letter notes, Apple cut a deal with Amazon that restricted who is allowed to sell refurbished Apple devices on Amazon.

    Apple has made small strides toward opening up the repair ecosystem. Earlier this month, the company said it would begin to sell repair parts to certain independent repair shops, though it has not said how much they will cost or what parts will be available.

    The internal communications are due to the committee on October 14.

Qt Quick on Vulkan, Metal, and Direct3D

Filed under
Development
Graphics/Benchmarks

Now that the first beta of Qt 5.14 is getting closer, it is time to start talking about one of the big new features. We cannot possibly cover all the details around the graphics stack improvements and the road to Qt 6 in one post, so in part 1 and 2 we will describe the background and take a closer look at what 5.14 will ship with, and then dive into the technical details and future directions in another set of posts later on.

Read more

Also: Linux Drivers Entries Suggest two APU AMD Lines in 2020

today's howtos and programming

Filed under
Development
  • How to Install Postman on Debian 10
  • freshclam[15552]: Can’t create temporary directory /var/lib/clamav/clamav-969944fd9a258fa7aff08976496d8541.tmp
  • 30 Linux Permissions Exercises for Sysadmins
  • How to Check Linux Mint Version Number & Codename
  • Four semanage commands to keep SELinux in enforcing mode
  • How to start developing with .NET [Ed: Red Hat has totally lost it. It promotes Microsoft.]
  • Constraint programming by example

    There are many different ways to solve problems in computing. You might "brute force" your way to a solution by calculating as many possibilities as you can, or you might take a procedural approach and carefully establish the known factors that influence the correct answer. In constraint programming, a problem is viewed as a series of limitations on what could possibly be a valid solution. This paradigm can be applied to effectively solve a group of problems that can be translated to variables and constraints or represented as a mathematic equation. In this way, it is related to the Constraint Satisfaction Problem (CSP).

    Using a declarative programming style, it describes a general model with certain properties. In contrast to the imperative style, it doesn't tell how to achieve something, but rather what to achieve. Instead of defining a set of instructions with only one obvious way to compute values, constraint programming declares relationships between variables within constraints. A final model makes it possible to compute the values of variables regardless of direction or changes. Thus, any change in the value of one variable affects the whole system (i.e., all other variables), and to satisfy defined constraints, it leads to recomputing the other values.

  • Samuel Sutch: Why Python Has Become an Industry Favorite Among Programmers

    With the world stepping towards a new age of technology development, it isn’t hard to imagine a future that will be full of screens. And if so be the case then, demand for people with strong programming skills will definitely rise with more number of people required to develop and support the applications. Python Training is always a good idea for those wishes to be a part of this constantly developing industry. Python language is not only easy to grasp, but emphasizes less on syntax which is why a few mistakes here and there doesn’t give as much trouble as some other languages does.

Linux commands to display your hardware information

Filed under
Linux

There are many reasons you might need to find out details about your computer hardware. For example, if you need help fixing something and post a plea in an online forum, people will immediately ask you for specifics about your computer. Or, if you want to upgrade your computer, you'll need to know what you have and what you can have. You need to interrogate your computer to discover its specifications.

Alternatively, you could open up the box and read the labels on the disks, memory, and other devices. Or you could enter the boot-time panels—the so-called UEFI or BIOS panels. Just hit the proper program function key during the boot process to access them. These two methods give you hardware details but omit software information.

Or, you could issue a Linux line command. Wait a minute… that sounds difficult. Why would you do this?

Read more

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More in Tux Machines

cmus – free terminal-based audio player

It took me a few years to appreciate console-based software. Repairing a broken system using the ubiquitous vi text editor was a turning point in my Linux journey. Now I spend a lot of time at the terminal, and listening to music. Best combine the two! When it comes to console-based music software, I really admire musikcube, a wonderful audio engine, library, player and server written in C++. This review looks at an alternative to musikcube. It’s called cmus. It shares many similarities with musikcube. Both are designed to run on a text-only user interface, reducing the resources required to run the application. cmus is written in C. Read more Also: Rclone Browser Fork With Fixes And Enhancements

Android Leftovers

GNU Linux-libre 5.3-gnu

GNU Linux-libre 5.3-gnu sources and tarballs are now available at
<http://www.fsfla.org/selibre/linux-libre/download/releases/5.3-gnu/>.
It didn't require any deblobbing changes since -rc7-gnu, the first
published rc-gnu.  Freesh binaries are already available!, thanks to
Jason Self; others are on the way.


Besides recognizing new false positives (sequences that our blob hunter
would report as suspicious, but that are neither blobs nor requests for
blobs), updating the deblobbing scripts for 5.3 required adjusting
cleaned up drivers for updated blob names, recognizing one new Free
piece of firmware with binary and corresponding sources embedded in the
kernel sources, and disabling blob loading introduced in a few drivers:
QCOM, DRM (HDCP), Allegro-DVT, and Meson-VDEC.

This last one was particularly disappointing: the firmware sources were
supposed to be available from LibreELEC, and though the link to the
alleged sources there is broken, I managed to find the "source" repo
containing them, only to find out the "source" was just a binary blob
encoded in C as an array of char, just like Linux used to do back when I
got involved with Linux-libre.  Oh well...  Request disabled...

If anyone can find Freely-licensed actual source code for that, or for
any other file whose loading we disable, please let us know, so that we
can refrain from disabling its loading.


For up-to-the-minute news, join us on #linux-libre of irc.gnu.org
(Freenode), or follow me (@lxoliva) on Twister <http://twister.net.co/>,
Secure Scuttlebutt, GNU social at social.libreplanet.org, Diaspora* at
pod.libreplanetbr.org or pump.io at identi.ca.  Check my web page (link
in the signature) for direct links.


Be Free! with GNU Linux-libre.
Read more Also: GNU Linux-Libre 5.3 Kernel Arrives for Those Seeking 100% Freedom for Their PCs GNU Linux-libre 5.3 Continues Deblobbing & Dealing With Firmware Trickery

New WireGuard Snapshot Offers Better Compatibility With Distributions/Kernels

WireGuard sadly isn't slated for the now-open Linux 5.4 merge window, but lead developer Jason Donenfeld has put out a new development snapshot of this open-source secure VPN tunnel. Coming barely two weeks since the previous WireGuard snapshot, this newest development release isn't too heavy on the changes but the focus is on better portability/compatibility. Read more