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Ubuntu Leftovers

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  • Debug ACPI DSDT and SSDT with ACPICA Utilities

    Using acpidbg on Ubuntu 18.04 x64 can be quite handy; however, the Linux kernel with ACPI_DEBUGGER is not always available, such as on Ubuntu for ARM. In such cases, acpica also provides a set of utilities, named acpica-tools, for ACPI debugging.

  • NVIDIA Jetson Nano is a $99 Computer Built for AI, Powered by Ubuntu

    Sold as a complete compute solution, the Jetson Nano Developer Kit wants to let embedded designers, researchers, and DIY makers harness the power of AI, all at an affordable price.

    A NVIDIA’s JetPack SDK provides a ‘complete desktop Linux environment based on Ubuntu 18.04 LTS’, replete with accelerated graphics, NVIDIA CUDA toolkit support, and more.

    NVIDIA say developers will find it “easy” to install leading open-source Machine Learning (ML) frameworks like TensorFlow, Caffe and Keras. Frameworks for computer vision and robotics development like OpenCV and ROS are also available via the SDK.

    The JetPack 4.2 SDK [shipped on the microSD card] provides a complete desktop Linux environment for Jetson Nano based on Ubuntu 18.04 with accelerated graphics, support for NVIDIA CUDA Toolkit 10.0, and libraries such as cuDNN 7.3 and TensorRT 5,” Nvidia says of the nimble Nano dev kit.

    But how powerful is it?

  • Vertical rhythm and spacing in Vanilla Framework 2.0

    Vanilla, the CSS framework behind Canonical’s suite of products and services, has undergone significant changes over the last 12 months. We’ve introduced vertical rhythm, a new type scale, consistent white space in and between elements, and adjustable information density. 

  • Ubuntu 19 04 Desktop Tour of New Features

Debian and Ubuntu, Lies and Marketing

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  • Jonathan Carter: Running for DPL

    I am running for Debian Project Leader, my official platform is published on the Debian website (currently looks a bit weird, but a fix is pending publication), with a more readable version available on my website as well as a plain-text version.

    Shortly after I finished writing the first version of my platform page, I discovered an old talk from Ian Murdock at Microsoft Research where he said something that resonated well with me, and I think also my platform.

  • Stephen Michael Kellat: Middle of March Meandering

    Eventually I intend to try Ubuntu Server installations to the three idle Raspberry Pi 3B+ boards. The ultimate goal there is for being able to offload video transcoding.

  • Ubuntu Weekly Newsletter Issue 570
  • Two-thirds of Android antivirus apps are worthless or worse

    Yes, you may as well change your wallpaper to say "no viruses allowed:" it'd be just as effective as the 170 antivirus products that detected fewer than 30 per cent of the 2000 malicious apps installed for testing purposes.

  • Why foldable smartphones are more fad than forever devices

    I've been a part of many industries and, without fail, each industry eventually resorts to gimmicks to sell a product. In some instances, the gimmick convinces consumers that the new product and is the must-have of the industry.


    The smartphone industry is no stranger to such snake-oil salesmanship. We've seen pop-up selfie cameras, Samsung Air View, built-in projectors, the HTC kickstand, the Amazon Fire Phone, the Ubuntu Phone, LG Modules, smart scroll, Alcatel disco lights, Blackberry Storm, Samsung edge display, KnockOn Password, HTC U11, and Pixel squeezable sides.

    The point being, the smartphone industry is keen on bringing to light a plethora of gimmicks to try and woo users away from their current devices.

Canonical Says Ubuntu 14.04 Extended Security Maintenance Begins April 25, 2019

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Released five years ago on April 17th, 2014, the Ubuntu 14.04 LTS (Trusty Tahr) operating system series will reach its end of life next month on April 30th. Following on the success of the Ubuntu 12.04 LTS (Precise Pangolin) operating system series, Canonical announced some time ago that it would offer its Extended Security Maintenance (ESM) commercial package to Ubuntu 14.04 LTS users as well.

Canonical said it would reveal more details about when the ESM (Extended Security Maintenance) offering is available for Ubuntu 14.04 LTS (Trusty Tahr), so the company now announced that users who want to continue using the operating system and still receive security updates after the April 30th end of life, can purchase the ESM package beginning April 25th, 2019.

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Canonical Releases Important Linux Kernel Patch for Ubuntu 16.04 LTS, Update Now

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The new Linux kernel security update is here to address five security issues discovered by various security researchers in the Linux 4.4 kernel used in the Ubuntu 16.04 LTS (Xenial Xerus) operating system series and official derivatives that aren't using the Linux 4.15 HWE (Hardware Enablement) kernel from Ubuntu 18.04 LTS (Bionic Beaver).

These include a flaw (CVE-2017-18241) in Linux kernel's F2FS file system implementation, which incorrectly handled the noflush_merge mount option, and multiple integer overflows (CVE-2018-7740) in the hugetlbfs implementation. Both issues could allow local attackers to crash the vulnerable system through a denial of service.

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Devices: Ubuntu Core Ported to Developer Kit and Kontron’s New Board

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  • Porting Ubuntu Core 18 to Nvidia Jetson TX1 Developer Kit

    Ubuntu Core (UC) is Canonical’s take in the IoT space. There are pre-built images for officially supported devices, like Raspberry Pi or Intel NUCs, but if we have something else and there is no community port, we need to create the UC image ourselves. High level instructions on how to do this are found in the official docs. The process is straightforward once we have two critical components: the kernel and the gadget snap.

  • Stylish but rugged industrial mini-PC runs on Coffee Lake

    Kontron’s “KBox B-201-CFL” is a compact, embedded box PC that runs Linux or Windows on 8th Gen Core CPUs with 2x GbE, SATA and M.2 SSDs, shock, vibration, and EMC tolerance, and a low noise level of under 34 dBA.

    Kontron is introducing a storage-oriented, Coffee Lake based mini-PC built around an unnamed Mini-ITX board. The KBox B-201-CFL follows other KBox industrial PCs including its recent Raspberry Pi powered KBox A-330-RPI and i.MX6 based KBox A-330-MX6. Applications for the stylish, 190 x 190 x 60mm system include image processing, plant data collection, and manufacturing execution systems, as well as more commercial or corporate settings, including music studios.

Ubuntu Studio to Remain Officially Recognized Ubuntu Flavor

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During a meeting of the Ubuntu Developer Membership Board on March 11, 2019, two Ubuntu Studio developers, Council Chair Erich Eickmeyer and Council Member Ross Gammon, successfully applied for and received upload rights to Ubuntu Studio’s core packages, fulfilling the requirements prescribed in

We would like to thank the community for staying with us through this uncertain time, and thank the Ubuntu Developer Membership Board for approving Erich and Ross’s applications.

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Also: Debian vs Ubuntu – Their Differences and Similarities

Canonical Releases Minor Linux Kernel Security Update for Ubuntu 14.04 LTS

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A security issue affects the Linux 3.13 kernel of the Ubuntu 14.04 LTS (Trusty Tahr) operating system series and its derivatives, including Kubuntu, Xubuntu, Lubuntu, Ubuntu Kylin, Ubuntu Studio, Mythbuntu, and others, allowing attackers to run programs as an administrator.

The vulnerability is a race condition (CVE-2019-6133) discovered by Jann Horn of Google Project Zero in Linux kernel's fork() system call, which could allow a local attacker to gain access to services storing cache authorizations and run programs with administrative privileges.

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The Official Ubuntu 19.04 Wallpaper Is Revealed

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Say aloha to Ubuntu’s new desktop background, the one that you, me, and thousands of other Ubuntu users will stare at for the next six months.

Every new Ubuntu release ships with a new desktop wallpaper (well, almost; Ubuntu 14.10 didn’t) and the upcoming release of Ubuntu 19.04 is no exception.

It’s something of a design tradition, but it’s also practical: distinct desktop wallpapers make it far easier to ‘spot’ Ubuntu in use in the wild!

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Data Loss (Lubuntu), Debian Server Retirement and New Debian Developers/Maintainers

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  • Statement Regarding Infrastructure Data Loss

    We still have complete access to the Git repositories hosted on the Phabricator instance, as they have been mirrored to GitHub, however, all of the tasks on our Phabricator instance as well as the wiki and login information for all users has been lost.

    We sincerely apologize for the inconvenience, and expect services to be back up before the end of the day Central US time. On a positive note, starting anew has allowed us to refine the way the services are organized on the server, to offer a faster and more secure experience going forward.

  • Goodbye to a 15-year-old Debian server

    It was October of 2003 that the server I’ve called “glockenspiel” was born. It was the early days of Linux-based VM hosting, using a VPS provider called memset, running under, of all things, User Mode Linux. Over the years, it has been migrated around, sometimes running on the metal and sometimes in a VM. The operating system has been upgraded in-place using standard Debian upgrades over the years, and is now happily current on stretch (albeit with a 32-bit userland). But it has never been reinstalled. When I’d migrate hosting providers, I’d use tar or rsync to stream glockenspiel across the Internet to its new home.

    A lot of people reinstall an OS when a new version comes out. I’ve been doing Debian upgrades with apt for ages, and this one is a case in point. It lingers.

    Root’s .profile was last modified in November 2004, and its .bashrc was last modified in December 2004. My own home directory still has a .pinerc, .gopherrc, and .arch-params file. I last edited my .vimrc in 2003 and my .emacs dates back to 2002 (having been copied over from a pre-glockenspiel FreeBSD server).

  • New Debian Developers and Maintainers (January and February 2019)

    The following contributors got their Debian Developer accounts in the last two months:

    Paulo Henrique de Lima Santana (phls)
    Unit 193 (unit193)
    Marcio de Souza Oliveira (marciosouza)
    Ross Vandegrift (rvandegrift)
    The following contributors were added as Debian Maintainers in the last two months:

    Romain Perier
    Felix Yan

Canonical/Ubuntu: ROS2, Weekly Newsletter and FOSDEM 2019

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  • ROS2 launch: required nodes

    This also creates a talker/listener system where, if the talker exits the system continues, but if the listener exits the launched system is shut down. However, you can see that, unlike the ROS1 example, there are a few steps required to get there. Specifically, it requires the LaunchDescription to include an event handler to listen for an exit event for every required node which then emits a Shutdown event, which then FINALLY causes the launched system to shut down. That doesn’t scale particularly well to a real system where a large number of nodes may be required to run successfully.

    We went through a few design iterations for how to best solve this, and decided that both the scaling and the boilerplate issues could be solved if the Node definitions could specify somehow that they were required. Rather than carry over that language from ROS1, though, we decided to keep some commonality with OnProcessExit and simply add an on_exit action list directly to the Node definition. We also added a new action called Shutdown. Using these two new features together allows one to very simply specify that, if a given node exits, it should shut the entire launched system down. This greatly reduces boilerplate and scales far better than adding an event handler for each node.

  • Ubuntu Weekly Newsletter Issue 569
  • FOSDEM 2019, a recap

    As part of the Linux community, a team at Canonical that open sources its own code and who are avid users of free software, we of course wanted to participate, hoping to get some fresh ideas and an overview of the current state of affairs.

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