Audiocasts/Shows: Destination Linux, TLLTS, FLOSS Weekly, Linux Headlines
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Coming up on this week’s episode of Destination Linux, we’re going to hold the first ever battle in the DL Battledome! This inaugural event will see BTRFS face off against one and only ZFS! Who will become the champion of the OCTAGON! Then we’ll answer some questions about systemd in the Community Feedback. This week we’re joined by Eric the IT Guy & Brandon Johnson, the hosts of the newest podcast on the Destination Linux Network, the Sudo Show! We’ve got some Linux News in the mix and then we’ll round out the show with our famous Picks of the Week with the Software Spotlight and our Tip of the Week. All that and so much more on this week’s episode of Destination Linux.
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new goodies, microcenter, streaming shows and packages, anime, camping
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Use of verifiable credentials and decentralized identifiers.
Explaining Self-sovereign identity and the use of verifiable credentials and decentralized identifiers, Kaliya Young, also known as "Identity Women," joins the show hosted by Doc Searls and Jonathan Bennet. They dive deep into what identity means and the future of identity. Kaliya is a vital part of the Internet Identity Workshop. This workshop brings talent together to design and build an identity system that empowers individuals. They also discuss the critical difference between open source and open standards and the implementations of what that means for identity.
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Mozilla suspends its Firefox Send service due to misuse by hacking groups, SUSE is acquiring Rancher Labs, Google launches the Open Usage Commons, and the Flutter framework arrives on Linux.
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One of the most often asked questions is what is the best "Linux?" Well, the answer to this question is obvious. But first, I'd just like to interject for a moment...
| Ubuntu and Robotics
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Linux has a lot to offer the automation industry. It is a stable and scalable alternative to Windows operating systems that allows for arguably greater connectivity between devices and systems. It is open-source software, which is a plus, and therefore can allow a large amount of development flexibility. Linux also generally doesn’t have as much downtime as Windows and is arguably less susceptible to cyber attacks. The fact is that as the industry leans towards Linux, so too must we adapt.
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Well, some industries prefer Linux for the aforementioned reasons, and because of that, we could see changes in how new manufacturing technologies and techniques are designed. Overall, as Linux becomes more prevalent, we may see the OS evolve to suit a variety of needs that are specific to each industry. Advancements are in progress every day, and it’s a possibility that automation will be made much easier as the OS adapts (at an increasing rate) to the needs of its consumers. Higher quality performance, increased security, greater versatility, and many other features are being looked forward to from the next iterations of Linux.
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ROS 2 Foxy Fitzroy was released on June 5 for Ubuntu 20.04. Foxy supports many under-the-covers performance and stability improvements. Two of our favorites that continue improving robot security include a ROS Node Definition Library (NoDL) and enhanced security monitoring.
NoDL defines configurations for each ROS node and how it interfaces with other nodes. By defining normal behaviors, ROS now can also enforce compliance with those behaviors, and robots can be monitored for abnormal behavior.
Foxy improves on security monitoring by enabling logging for DDS communications. Once ROS 2 security features are enabled, environment variables can be configured to log security events to a file or publish them through DDS. Now not only can you monitor operational robot behaviors, you can also monitor communications security!
This LTS release will be supported through May 2023. See Kyle Fazzari’s blog post for more information about ROS Foxy.
ROS 2 now also has a rolling release for preparing for the next stable distribution development. Rolling Ridley is continuously updated and will at times include breaking changes.
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Adi Singh, is the Product Manager in Robotics at Canonical. Canonical specializes in open source software, including Ubuntu, the world’s most popular enterprise Linux from cloud to edge, and they have a global community of 200,000 contributors.
Ubuntu is the most popular Linux distribution for large embedded systems. As autonomous robots mature, innovative tech companies turn to Ubuntu, we discuss advantages of building a robot using open source software and other key considerations.
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Building anything on open source software is usually a wise idea as it allows you to stand on the shoulders of giants. Individuals and companies alike benefit from the volunteer contributions of some of the brightest minds in the world when they decide to build on a foundation of open source software. As a result, popular FOSS repositories are very robustly engineered and very actively maintained; allowing users to focus on their innovation rather than the nuts and bolts of every library going into their product.
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Ubuntu is the platform of choice for developers around the world for frictionless IoT and robotics development. A number of popular frameworks that help with device engineering are built on Ubuntu, so the OS is able to provide several tools for building and deploying products in this area right out of the box. For instance, the most widely used middleware for robotics development – ROS – is almost entirely run on Ubuntu distros...
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The web team here at Canonical run two-week iterations. Here are some of the highlights of our completed work from this iteration.
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sounds like a messed xorg.conf
I'm no linux guru either, but it seems to me that you messed up your xorg.conf. type "cd /etc/X11" and then "ls" to see, if there is a backup of it("xorg.conf.backup", "xorg.conf.old", something like that). Now backup the existing xorg.conf: "cp xorg.conf xorg.conf.MYBACKUP", where xorg.conf.MYBACKUP is the name you want to give to your backup. Next, overwrite the existing xorg.conf that you just backuped: "mv xorg.conf.backup xorg.conf", where xorg.conf.backup is the original backup file you found in the first step. If nothing went wrong, "startx" should now start the GUI.
In case that there was no backup file, or that this backup file is corrupted as well, you should definately post the error created when you type "startx"(doing that is usually the first step, just wanted to give you a first help). Maybe you only have to fix the lines that set the resolution in your xorg.conf. But don't forget to backup before you do big changes to it!