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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

Zettlr Markdown Editor 1.7 Adds Vim And Emacs Input Modes, Tabs Support, Faster Startup Time

Zettlr, a free and open source Markdown editor for personal knowledge management and publishing, had a new release recently (1.7.0, followed by 1.7.1 to fix some issues) which adds Vim and Emacs input modes, tabs support, and faster application startup time thanks to caching, along with many other improvements. Read more

How to access Samsung DeX mode on Linux and Chrome OS

Google has yet to offer a full-fledged desktop interface in Android, but you can access the hidden barebones version of it on some devices running Android 10. A handful of OEMs, on the other hand, offer their own implementations of the desktop mode, and Samsung’s DeX is inarguably the most polished and feature-rich option among them. The latest version of Samsung DeX can even seamlessly integrate itself with Macs and Windows PCs. While Samsung did backport DeX for PC support to older flagships, they still don’t provide an official Linux (and Chrome OS) companion app corresponding to this handy feature. From the perspective of a regular Samsung user who uses Linux, it means that you could only access the DeX mode if you had an external display. There is no OS level limitation per se, so XDA Senior Member KMyers has decided to create a proof-of-concept technique that ultimately works as a Linux client for Samsung DeX. [...] Typical features like clipboard sharing and drag-and-drop installation of APK files are working without issue in this method, but sound routing is a bit messy. You might have to compile scrcpy from source, though, because the available build on the default package repository of Debian based operating systems (e.g., Ubuntu and the Crostini environment on Chrome OS) is usually outdated. This step can be particularly problematic on ARM-powered Chrome OS devices, so opt for cross-compiling instead. Read more

Android Leftovers

Understanding Copyleft

The concept of copyleft means making a software program or other work free to use and additionally requiring all modified and extended versions of that program to be free as well. It’s important to note that “free” in this sense refers to freedom – not cost – and you may hear the commonly used phrases “free as in speech” and “free as in beer” used to make this distinction. According to the LINFO website, “the origin of the term copyleft is not certain. It may have first appeared in a message contained in Tiny BASIC, a free version of the Basic programming language that was written by Dr. Li Chen Wang in the late 1970s.” [...] As Joe Casad states in a Linux Magazine article, “The GNU General Public License was born of the simple idea that freedom matters. Yet this simple tool for protecting freedom has another important feature that makes it even more powerful, and that is the ability to build communities.” The amazing growth of projects and communities that make up the open source ecosystem stems in part from this ability to modify and extend tools to meet changing needs. Read more