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today's leftovers

Submitted by Roy Schestowitz on Monday 18th of May 2020 11:00:37 PM Filed under
Misc
  • Laval Virtual: OpenXR master class in VR!

    Collabora's long-standing tradition of presenting talks at conferences took an unexpected turn in the last few months, with numerous events deciding to go virtual for their 2020 editions. Collaborans have been up to the challenge however, presenting online talks at a number of events including foss-north ("FOSS Virtual & Augmented Reality") and Linaro Tech Days ("Wayland and Weston: 8 years of production devices" & "Open Source GPU Drivers BoF").

    In addition to these online conferences, Collaborans also had the opportunity to speak at a event held entirely in VR! Laval Virtual World, which took place at the end of April, brought the concept of "virtual conference" to a new level with over 11,000 attendees from 110 countries taking part in a fully immersive experience! Here's a short highlight reel from the organizers, to give you an idea of what the event was like.

  • XSAVES Supervisor States For Linux 5.8 To Support Future Intel CPU Features

    Queued up this weekend as part of the x86/fpu changes slated for the upcoming Linux 5.8 cycle is low-level functionality necessary for supporting other current and future Intel CPU features.

    The XSAVES supervisor states (Save Processor Extended States Supervisor) support is now queued up ahead of the Linux 5.8 kernel. These patches have been on the mailing list for a while and now deemed ready for mainline inclusion after being queued by Borislav Petkov.

  • “Why don’t you just fix [thing] already?”

    The title of this post is a somewhat common gripe among users. Its obvious answer is that resources are limited and people were working on other things.

    Duh! Not very helpful.

    We need to dig deeper and find the implicit question, which is “Why wasn’t [thing that I care about] prioritized over other things?” This is a more accurate and useful question, so we can arrive at a more accurate and useful answer: because other things were deemed either more important or more feasible to fix by the people doing the work.

    Why would other things be deemed more important? For bugs, it’s because they affect everyone and are trivially reproducible. The ones that get overlooked tend to be more esoteric issues that are not easily reproducible, or only affect niche use cases or hardware. Put bluntly, it’s appropriate that such issues are de-prioritized; it should be obvious that issues which affect everyone and are trivially reproducible are more important to fix.

  • OpenBSD Seeing Initial Work Land On Enabling 64-bit POWER

    It's arguably long overdue but OpenBSD is seeing initial work on POWERPC64 enablement landing in its source tree.

    OpenBSD is joining the ranks of other BSDs and Linux distributions in supporting recent 64-bit IBM POWER / OpenPOWER hardware. It's still a journey ahead but as of last week the initial pieces of the architecture enablement were merged.

  • How to install Xtreme Download Manager - XDM on Ubuntu 20.04

    In this video, we are looking at how to install Xtreme Download Manager - XDM on Ubuntu 20.04.

  • 2020-05-18 | Linux Headlines

    openSUSE board elections are still causing friction in its community, Audacity rolls back its 2.4 update, the curl project seeks participation in its annual survey, the bootiso Bash script hits version 4.0, and Sunflower lands its first release in four years.

»

Tech but not Linux-related

Submitted by Roy Schestowitz on Monday 18th of May 2020 11:09:12 PM.
  • Everything you need to know about Night mode in Samsung Internet

    Here’s a quick refresher on SVG images before we dig into this topic: SVG images are XML documents with different shapes (like rectangles, circles, etc.) and paths described as positioned objects with styling applied to them. Unlike a bitmap image, the individual objects the image consists of remains. You can target and e.g. animate or change the color of different parts of an SVG image.

    The same color filtering that is used on bitmap images should have been used for SVG images. That’s what they appear to have done as well. However, they didn’t abandon the idea of the HSL lightness inversion for SVG images. I’ll let these examples of day and night renderings of some SVG images speak for themselves...

  • Russell Coker: A Good Time to Upgrade PCs

    PC hardware just keeps getting cheaper and faster. Now that so many people have been working from home the deficiencies of home PCs are becoming apparent. I’ll give Australian prices and URLs in this post, but I think that similar prices will be available everywhere that people read my blog.

    From MSY (parts list PDF ) [1] 120G SATA SSDs are under $50 each. 120G is more than enough for a basic workstation, so you are looking at $42 or so for fast quiet storage or $84 or so for the same with RAID-1. Being quiet is a significant luxury feature and it’s also useful if you are going to be in video conferences.

    For more serious storage NVMe starts at around $100 per unit, I think that $124 for a 500G Crucial NVMe is the best low end option (paying $95 for a 250G Kingston device doesn’t seem like enough savings to be worth it). So that’s $248 for 500G of very fast RAID-1 storage. There’s a Samsung 2TB NVMe device for $349 which is good if you need more storage, it’s interesting to note that this is significantly cheaper than the Samsung 2TB SSD which costs $455. I wonder if SATA SSD devices will go away in the future, it might end up being SATA for slow/cheap spinning media and M.2 NVMe for solid state storage. The SATA SSD devices are only good for use in older systems that don’t have M.2 sockets on the motherboard.

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today's howtos

  • How to install go1.19beta on Ubuntu 22.04 – NextGenTips

    In this tutorial, we are going to explore how to install go on Ubuntu 22.04 Golang is an open-source programming language that is easy to learn and use. It is built-in concurrency and has a robust standard library. It is reliable, builds fast, and efficient software that scales fast. Its concurrency mechanisms make it easy to write programs that get the most out of multicore and networked machines, while its novel-type systems enable flexible and modular program constructions. Go compiles quickly to machine code and has the convenience of garbage collection and the power of run-time reflection. In this guide, we are going to learn how to install golang 1.19beta on Ubuntu 22.04. Go 1.19beta1 is not yet released. There is so much work in progress with all the documentation.

  • molecule test: failed to connect to bus in systemd container - openQA bites

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  • How To Install MongoDB on AlmaLinux 9 - idroot

    In this tutorial, we will show you how to install MongoDB on AlmaLinux 9. For those of you who didn’t know, MongoDB is a high-performance, highly scalable document-oriented NoSQL database. Unlike in SQL databases where data is stored in rows and columns inside tables, in MongoDB, data is structured in JSON-like format inside records which are referred to as documents. The open-source attribute of MongoDB as a database software makes it an ideal candidate for almost any database-related project. This article assumes you have at least basic knowledge of Linux, know how to use the shell, and most importantly, you host your site on your own VPS. The installation is quite simple and assumes you are running in the root account, if not you may need to add ‘sudo‘ to the commands to get root privileges. I will show you the step-by-step installation of the MongoDB NoSQL database on AlmaLinux 9. You can follow the same instructions for CentOS and Rocky Linux.

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    Ghost is a very popular open-source content management system. Started as an alternative to WordPress and it went on to become an alternative to Substack by focusing on membership and newsletter. The creators of Ghost offer managed Pro hosting but it may not fit everyone's budget. Alternatively, you can self-host it on your own cloud servers. On Linux handbook, we already have a guide on deploying Ghost with Docker in a reverse proxy setup. Instead of Ngnix reverse proxy, you can also use another software called Traefik with Docker. It is a popular open-source cloud-native application proxy, API Gateway, Edge-router, and more. I use Traefik to secure my websites using an SSL certificate obtained from Let's Encrypt. Once deployed, Traefik can automatically manage your certificates and their renewals. In this tutorial, I'll share the necessary steps for deploying a Ghost blog with Docker and Traefik.

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