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today's leftovers

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  • Want A More Secure Computer At The Cost Of Performance? Linux 5.8 Landing L1d Flushing

    For those very concerned about CPU data sampling vulnerabilities, the Linux 5.8 kernel comes with the ability to flush the L1 data cache on each context switch. That's good for security, but will hurt the system performance with all the excess L1 cache flushing.

    This work stems from a proposal earlier this year to flush the L1d cache on context switches due to recent snoop assisted data sampling vulnerabilites or the cache data leaked via side channels. This work was carried out by an Amazon engineer so presumably there is some interest in offering this functionality in the AWS space.

  • AMD Radeon Linux Driver Sees Patches For New "Sienna Cichlid" GPU

    Still digging through the 207 patches for the AMD Radeon Sienna Cichlid, but will update if seeing anything else of note. For the most part it's leveraging the existing Navi code paths but the usual churn surrounding firmware, clock-gating / power management differences, and other modifications in the usual spots for bringing up new hardware. The main code additions primarily pertain to the new DCN3 and VCN3 blocks.

    Given the timing of these patches, the AMD Sienna Cichlid won't be mainlined until the Linux 5.9 merge window opening in August and then releasing in stable around October. That timeframe at least does point to Sienna Cichlid likely being the "RDNA 2" graphics card launch coming later in the calendar year.

  • 2020-06-01 | Linux Headlines

    The Linux kernel packs version 5.7 with exciting additions, version 2.2 of the Foliate eBook reader is out with support for many more formats, and members of the Association of American Publishers sue the Internet Archive over their library lending practices.

  • Ubuntu Cinnamon Remix 20.04 LTS overview | Ubuntu, traditionally modern.

    In this video, I am going to show an overview of Ubuntu Cinnamon Remix 20.04 LTS and some of the applications pre-installed.

  • SUSE Update Infrastructure Access Through the Data Center

    In Step 2 Toward Enhanced Update Infrastructure Access the time-line for enabling access to the SUSE update infrastructure in the Public Cloud via routing through the data center was announced. As of June 1, 2020 we have started the work necessary to make this possible for all regions in AWS, Azure, and GCE. This marks the beginning of the final phase of a process that started almost 1 year ago with A New Update Infrastructure For The Public Cloud. We expect to have everything completed by no later than the end of June 2020, but will most likely be much faster. The changes from a global IP based access control mechanism to an instance based access mechanism apply to both SUSE Linux Enterprise Server (SLES) and SUSE Linux Enterprise Server For SAP Applications (SLES For SAP) on-demand instances and any images released in the future that might access the update infrastructure.

  • Learn how to save money, reduce complexity with SUSE Manager [Ed: Linux has been around since the 1970s, it says. OK, whatever...]

    “The first is cost,” he says. “Linux has been around since the 1970s and has come a long way in that time. In one month (April 2020), Linux installations grew from 1,3% of the total installed base to a 3%. This might not sound like a lot, but it represents massive growth. For some Linux distributions, the grow rate was better than 600%.”

    [...]

    Brink points out that switching to a Linux front-end and an effective back-end management tool could save organisations a massive chunk of their end user license costs.
    SUSE Manager monitors an organisation’s infrastructure and manages how they deploy services on to front-end devices from a central point.

  • OSI Charting a Course for 2020 and Beyond [Ed: Why does the OSI take pride in becoming a home for a Microsoft front group like ClearlyDefined?]

    The key to understanding how we move forward is to first remember how we got here. OSI as we know it didn't exist until 2013.

    Founded in 1998, the organization was held together in its first decade through strong board leadership in Michael Tiemann (2001-2012) and Danese Cooper (2002-2011). Deb Bryant (2012-present), Karl Fogel (2011-2014), Mike Milinkovich (2012-2018), and Simon Phipps (2010-2020) helped OSI begin professionalizing, by hiring General Manager Patrick Masson (2013-present), and becoming more democratic, with the introduction of a community-elected board. Molly de Blanc (2016-2020), Allison Randal (2014-2019), and Stefano “Zack” Zacchiroli (2014-2017) fostered better ties with the free software community. Richard Fontana (2013-2019) elevated legal discussions, taking OSI’s licensing work from knowledgeable hackers to expert practitioners and defining a review process. And Pam Chestek (2019-present) has brought a new level of professionalism to the license review process.

    This is a reductionist and inevitably incomplete view of OSI’s history, but the point is this: OSI has come a long way, and I am forever grateful to the talented and generous individuals who collectively invested decades to get us here.

    Over the last seven years, OSI has: sustained its core mission, shaped policy around the globe, worked tirelessly to mitigate open washing, built an alliance of more than 125 organizations representing hundreds of thousands of people, provided a home for projects like ClearlyDefined, and rolled out programs like FLOSS Desktops for Kids and Open Source Technology Management courses with Brandeis University.

  • Priyanka Sharma Joins CNCF as General Manager

More in Tux Machines

Interview – NXP Linux BSP and Timesys Vigiles Maintenance Service & Security Updates

I’ve been interviewing Ed White, Manager of NXP’s Professional Support and Engineering Services, and Akshay Bhat, Director of Engineering, Security Solutions at Timesys by email to find out more about NXP Linux BSP development process, and how Timesys can help to keep it updated and secure with its Vigiles service. Read more

Screen Zoom and Mouse Indicator on Ubuntu 20.04

Ubuntu can help you to enlarge screen items and easily display cursor movements to your audience. This article is a company to Focal For Teachers and continuation to Screen Zoom on KDE. This is practicable to every GNOME operating system not only Ubuntu but also Fedora, Red Hat, Zorin and others. You can watch practical examples in this new video below and also image editing videos I published recently. For teachers and tutorial makers, this article is for you. Enjoy! Read more

Python Programming

  • Find the coefficients of the Quadratic Equation of the given two roots with Python

    In this example, you are expected to find the coefficients of the quadratic equation of the given two roots (x1 and x2) with a python function. The Quadratic Equation looks like this ax^2 + bx + c = 0. Our mission is to find the coefficients of the equations which is a, b, and c. The return type from the function is a Vector containing coefficients of the equations in the order (a, b, c). Since there are infinitely many solutions to this problem, we fix a = 1. Below is the method to find the return Vector.

  • Episode #188: Will the be a "switch" in Python the language?
  • Python 3.9.0b4

    Python 3.9 is still in development. This release, 3.9.0b4, is the fourth of five planned beta release previews. Beta release previews are intended to give the wider community the opportunity to test new features and bug fixes and to prepare their projects to support the new feature release.

  • Python 3.9.0b4 is now ready for testing

    On behalf of the entire Python development community, and the currently serving Python release team in particular, I’m pleased to announce the release of Python 3.9.0b4.

  • 10 most useful Python Dictionary Methods

    Dictionary is used in python to store multiple data with key-value pairs. It works like an associative array of other programming languages. The curly ({}) brackets are used to define a dictionary and the key-value is defined by the colon(:). The content of the key and value can be numeric or string. Python has many built-in methods to do different types of tasks on the dictionary data such as add, update, delete, search, count, etc. 10 most useful dictionary methods of python are explained in this article.

  • 10 most useful Python String Methods

    The string data is the characters of an array that contains one or more characters as value for any programming language. All printable characters such as alphabets, numbers, special characters, etc. are commonly used in the string data. ASCII code and Unicode are mainly used for converting any character to a number that the computer can understand. Python uses Unicode characters for string data. We need to perform different types of tasks based on the programming purpose on the string data such as searching the particular character or characters, capitalizing the first character, making all characters uppercase, etc. Python has many built-in string methods to do these types of tasks very easily. The 10 most useful python string methods are explained in this article.

Shell/Bash Picks