Language Selection

English French German Italian Portuguese Spanish

LWN

Syndicate content
LWN.net is a comprehensive source of news and opinions from and about the Linux community. This is the main LWN.net feed, listing all articles which are posted to the site front page.
Updated: 2 hours 11 min ago

Perl 6 renamed to Raku

Tuesday 15th of October 2019 03:29:29 PM
The pull request changing the name of Perl 6 to Raku has been merged. See the full text for more information. "This document describes the steps to be taken to effectuate a rename of 'Perl 6' to 'Raku', as described in issue #81. It does not pretend to be complete in scope or in time. To change a name of a project that has been running for 19+ years will take time, a lot of effort and a lot of cooperation. It will affect people in foreseen and unforeseen ways." (Thanks to Sean Whitton)

Security updates for Tuesday

Tuesday 15th of October 2019 02:58:33 PM
Security updates have been issued by Debian (sudo and xtrlock), openSUSE (sudo), Red Hat (Single Sign-On), Slackware (sudo), SUSE (binutils, dhcp, ffmpeg, kernel, kubernetes-salt, sudo, and tcpdump), and Ubuntu (sudo).

KDE Plasma 5.17 released

Tuesday 15th of October 2019 01:18:43 PM
The KDE project has announced the release of version 5.17 of the Plasma desktop environment. "Night Color, the color-grading system that relaxes your eyes when the sun sets, has landed for X11. Your Plasma desktop also recognizes when you are giving a presentation, and stops messages popping up in the middle of your slideshow. If you are using Wayland, Plasma now comes with fractional scaling, which means that you can adjust the size of all your desktop elements, windows, fonts and panels perfectly to your HiDPI monitor."

Python 3.8.0 released

Monday 14th of October 2019 10:15:39 PM
Version 3.8.0 of the Python language has been released. New features include the controversial assignment expressions, positional-only arguments, the Vectorcall mechanism, and more; see the what's new in Python 3.8 document for more information.

PyPy 7.2 released

Monday 14th of October 2019 07:11:30 PM
Version 7.2 of PyPy, an implementation of the Python language, is out. With this release, Python 3.6 support is deemed ready: "This release removes the 'beta' tag from PyPy3.6. While there may still be some small corner-case incompatibilities (around the exact error messages in exceptions and the handling of faulty codec errorhandlers) we are happy with the quality of the 3.6 series and are looking forward to working on a Python 3.7 interpreter."

[$] Finding race conditions with KCSAN

Monday 14th of October 2019 06:13:07 PM
Race conditions can be some of the trickiest bugs to find. The resulting problems can be subtle, and reproducing the problem in order to track it down can be difficult or impossible; often code inserted to narrow down a race condition will cause it to stop manifesting entirely. A tool that can find race conditions automatically would thus be a valuable thing for the kernel community to have. In late September, Marco Elver announced a tool called KCSAN (the Kernel Concurrency Sanitizer) that does exactly that — and which has already found a number of real problems.

Security updates for Monday

Monday 14th of October 2019 03:00:06 PM
Security updates have been issued by Arch Linux (chromium, sdl, and unbound), Debian (clamav, libdatetime-timezone-perl, openssl, tcpdump, and tzdata), Fedora (cutter-re, jackson-annotations, jackson-bom, jackson-core, jackson-databind, jackson-parent, libapreq2, ming, opendmarc, radare2, and thunderbird), openSUSE (chromium), Oracle (kernel), and SUSE (axis, jakarta-commons-fileupload, kernel, sles12sp3-docker-image, sles12sp4-image, system-user-root, and webkit2gtk3).

Kernel prepatch 5.4-rc3

Monday 14th of October 2019 01:52:12 PM
The 5.4-rc3 kernel prepatch is out for testing. "Things continue to look fairly normal, with rc3 being larger than rc2, as people are starting to find more regressions, but 5.4 so far remains on the smaller side of recent releases."

More stable kernels

Saturday 12th of October 2019 11:19:26 PM
The 5.3.6, 4.19.79, and 4.14.149 stable kernel updates have been released; each contains another set of important updates.

[$] Calibrating your fear of big bad optimizing compilers

Friday 11th of October 2019 02:14:14 PM
As noted earlier, when compiling Linux-kernel code that does a plain C-language load or store, as in "a=b", the C standard grants the compiler the right to assume that the affected variables are neither accessed nor modified by any other thread at the time of that load or store. The compiler is therefore permitted to carry out a surprisingly large number of optimizations, any number of which might ruin your concurrent code's day. Given that current compilers usually do not emit diagnostics warning of potential ruined days, it would be good to have other tools take on this task.

Security updates for Friday

Friday 11th of October 2019 02:04:07 PM
Security updates have been issued by Debian (lucene-solr and ruby-openid), Fedora (krb5 and SDL2), openSUSE (kernel and libopenmpt), and Ubuntu (python2.7, python3.4).

Understanding Scheduling Behavior with SchedViz (Google Open Source Blog)

Thursday 10th of October 2019 10:38:28 PM
The Google Open Source Blog has an announcement of the release of the SchedViz tool that is used internally at the company "to discover many opportunities for better scheduling choices and to root-cause many latency issues". SchedViz provides a GUI to explore kernel traces: "The SchedViz UI displays collections in several ways. A zoomable and pannable heatmap shows system cores on the y-axis, and the trace duration on the x-axis. Each core in the system has a swim-lane, and each swim-lane shows CPU utilization (when that CPU is being kept busy) and wait-queue depth (how many threads are waiting to run on that CPU.) The UI also includes a thread list that displays which threads were active in the heatmap, along with how long they ran, waited to run, and blocked on some event, and how many times they woke up or migrated between cores. Individual threads can be selected to show their behavior over time, or expanded to see their details."

[$] BPF at Facebook (and beyond)

Thursday 10th of October 2019 04:47:38 PM
It is no secret that much of the work on the in-kernel BPF virtual machine and associated user-space support code is being done at Facebook. But less is known about how Facebook is actually using BPF. At Kernel Recipes 2019, BPF developer Alexei Starovoitov described a bit of that work, though even he admitted that he didn't know what most of the BPF programs running there were doing. He also summarized recent developments with BPF and some near-future work.

Security updates for Thursday

Thursday 10th of October 2019 01:47:25 PM
Security updates have been issued by Debian (clamav, libtomcrypt, and rsyslog), Fedora (suricata), SUSE (libopenmpt and python-requests), and Ubuntu (libsoup2.4 and octavia).

[$] LWN.net Weekly Edition for October 10, 2019

Thursday 10th of October 2019 12:58:31 AM
The LWN.net Weekly Edition for October 10, 2019 is available.

[$] An update on the input stack

Wednesday 9th of October 2019 09:59:52 PM
The input stack for Linux is an essential part of interacting with our systems, but it is also an area that is lacking in terms of developers. There has been progress over the last few years, however; Peter Hutterer from Red Hat came to the 2019 X.Org Developers Conference to talk about some of the work that has been done. He gave a status report on the input stack that covered development work that is going on now as well as things that have been completed in the last two years or so. Overall, things are looking pretty good for input on Linux, though the "bus factor" for the stack is alarmingly low.

Stallman: No radical changes in GNU Project

Wednesday 9th of October 2019 06:46:01 PM
Richard Stallman has issued a brief statement saying that there will not be any radical changes in the GNU Project's goals, principles and policies. "I would like to make incremental changes in how some decisions are made, because I won't be here forever and we need to ready others to make GNU Project decisions when I can no longer do so. But these won't lead to unbounded or radical changes."

[$] Free software support for virtual and augmented reality

Wednesday 9th of October 2019 04:05:12 PM
A talk at the recent X.Org Developers Conference in Montréal, Canada looked at support for "XR" in free software. XR is an umbrella term that includes both virtual reality (VR) and augmented reality (AR). In the talk, Joey Ferwerda and Christoph Haag from Collabora gave an overview of XR and the Monado project that provides support for those types of applications.

Security updates for Wednesday

Wednesday 9th of October 2019 02:57:03 PM
Security updates have been issued by Fedora (chromium), openSUSE (rust and sqlite3), SUSE (dnsmasq, firefox, and kubernetes, patchinfo), and Ubuntu (python2.7, python3.5, python3.6, python3.7).

OpenSSH 8.1 released

Wednesday 9th of October 2019 02:39:40 PM
OpenSSH 8.1 is out. It includes some security fixes, including the encryption of keys at rest to defend them against speculative-execution attacks. There is also an experimental new signature and verification mechanism for public keys.

More in Tux Machines

Google: Replacing Google Chrome, AMP and Titan Security Keys

  • The top 5 alternatives to Google Chrome

    Google Chrome is the most popular web browser on the market. It provides a user-friendly, easy-to-use interface, with a simple appearance featuring a combined address and search bar with a small space for extensions. Chrome also offers excellent interconnectivity on different devices and easy syncing that means that once a user installs the browser on different devices, all their settings, bookmarks and search history come along with it. Virtually all a user does on Google chrome is backed up to Google Cloud. Chrome also offers easy connectivity to other Google products, such as Docs, Drive, and YouTube via an “Apps” menu on the bookmarks bar, located just below the address/search bar. Google Translate, one of the best translation applications currently available on the internet, is also included.

  • Google unplugs AMP, hooks it into OpenJS Foundation after critics turn up the volume [Ed: Microsoft Tim on Google passing a bunch of EEE to a foundation headed by a Microsoft ‘mole’, 'open'JS ]

    AMP – which originally stood for Accelerated Mobile Pages though not any more – was launched in 2015, ostensibly to speed up page loading on smartphones. The technology includes AMP HTML, which is a set of performance-optimized web components, and the AMP Cache, which serves validated AMP pages. Most AMP pages are served by Google’s AMP Cache.

  • Google USB-C Titan Security Keys Begin Shipping Tomorrow

    Google announced their new USB-C Titan Security Key will begin shipping tomorrow for offering two-factor authentication support with not only Android devices but all the major operating systems as well. The USB-C Titan Security Key is being manufactured by well known 2FA key provider Yubico. This new security key is using the same chip and firmware currently used by Google's existing USB-A/NFC and Bluetooth/NFC/USB Titan Security Key models.

Manjaro | Review from an openSUSE User

There are many flavors of Linux, we call them distributions but in a way, I think “flavor” is a good word for it as some some are a sweet and delightful experience while with others a lingering, foul taste remains. Manjaro has not left a foul taste in any way. In full disclosure, I am not a fan of Arch based Linux distributions. I appreciate the idea of this one-step-removed Gentoo and for those that really like to get into the nitty-gritty bits Arch is good for that. My problem with Arch is the lack of quality assurance. The official repository on Arch Wiki describes the process of how core packages need to be signed off by developers before they are allowed to move from staging into the official repositories. With the rate at which packages come in, it is almost an impossibility that through manual testing software will continue to work well with other software as some dependencies may change. Admittedly, I don’t use it daily, outside of VMs for testing nor do I have a lot of software installed so this is not going to be a problem I am likely to experience. Manjaro, from my less than professional opinion, is a slightly slower rolling Arch that seems to do more testing and the process, from what I understand, is similar. Developers have to approve the packages before they are moved into the official repositories. I also understand that there isn’t any automated QA to perform any testing so this is all reliant on user or community testing, which, seemingly, Manjaro is doing a good job of it. My dance with Manjaro is as part of a BigDaddyLinuxLive Community challenge, to give it a fair shake and share your experience. This is my review of Manjaro with the Plasma Desktop. Bottom Line Up Front, this is quite possibly the safest and most stable route if you like the Arch model. In the time I ran it, I didn’t have any issues with it. The default Plasma Desktop is quite nice, and the default themes are also top notch. The graphical package manager works fantastically well and you do have Snap support right out of the gate. It’s truly a great experience. Was it good enough to push me from my precious openSUSE? No, but it has made for a contender and something about which to think. Read more

Android Leftovers

Open source interior design with Sweet Home 3D

Historically, I practiced the little-known fourth principle: don't have furniture. However, since I became a remote worker, I've found that a home office needs conveniences like a desk and a chair, a bookshelf for reference books and tech manuals, and so on. Therefore, I have been formulating a plan to populate my living and working space with actual furniture, made of actual wood rather than milk crates (or glue and sawdust, for that matter), with an emphasis on plan. The last thing I want is to bring home a great find from a garage sale to discover that it doesn't fit through the door or that it's oversized compared to another item of furniture. Read more