Introducing architecture variants

Ubuntu 25.10 supports packages for specific silicon variants, balancing compatibility and performance. This includes support for x86-64 architecture levels like x86-64-v2, -v3, and -v4.

x86 architecture 1 byte opcodes

x86 architecture has special treatment for PM64 O32 NOP with REP prefix and XCHG EAX,EAX instruction. This behavior was supported on 8086/8088 processors and is still used by a corporate entity in 2025.

AI scrapers request commented scripts

https://cryptography.dog/images/brand/png-alpha/smol/cat.png
You discovered abusive bot behavior on your server, specifically scrapers trying to collect content for training LLMs by requesting a non-existent JavaScript file.

Nix Derivation Madness

User is experiencing confusion with Nix package system due to fixed-output derivations. They found that changing a derivation's attributes can create a new derivation path without affecting the output path.

Attention lapses due to sleep deprivation due to flushing fluid from brain

https://news.mit.edu/sites/default/files/images/202510/MIT-Sleep-Deprivation-01.jpg
New research from MIT shows that attention lapses due to sleep deprivation coincide with a flushing of fluid from the brain, a process that normally occurs during sleep. This flushing is believed to be necessary for maintaining a healthy brain, but it comes at a cost of dramatically impaired attention.

Lording it, over: A new history of the modern British aristocracy

https://newcriterion.com/wp-content/uploads/2025/10/The_Duke_of_Devonshire_at_Chatsworth-1024x875.jpg
Everyone loves a lord, or so the saying goes, and it is doubtless why Eleanor Doughty has written Heirs & Graces, a book about Britain’s aristocracy, otherwise generally known as the country’s hereditary peerage.1 There are quite a lot of them: twenty-four dukes, thirty-four marquesses, 189 earls, 110 viscounts, and 439 barons. They hold peerages with various designations: English, ...

Another European agency shifts off US Tech as digital sovereignty gains steam

https://www.zdnet.com/a/img/resize/e27b3953df87b835a77deeeec01f311aa283a5ec/2022/08/05/e2171bd1-84f6-4ca8-9801-2abdeb61a365/steven-vaughan-nichols.jpg?auto=webp&fit=crop&frame=1&height=192&width=192
Austria's Ministry of Economy migrated 1,200 employees to a Nextcloud-based cloud and collaboration platform hosted on Austrian-based infrastructure to achieve digital sovereignty. This move aligns with European governments' trend to control sensitive data and reduce reliance on US-based tech providers.

My Impressions of the MacBook Pro M4

https://michael.stapelberg.ch/posts/2025-10-31-macbook-pro-m4-impressions/2025-10-30-macbooks-displays_hu_4cb7e6e8fae8437.jpg
I have been using a MacBook Pro M4 as my portable computer for the last half a year and wanted to share a few short impressions. As always, I am not a professional laptop reviewer, so in this article you won’t find benchmarks, just subjective thoughts! Back in 2021, I wrote about the MacBook Air M1, which was the first computer I used that contained Apple’s own ARM-based CPU. Having a silent ...

Pangolin (YC S25) Is Hiring a Full Stack Software Engineer (Open-Source)

https://fossorial.mintlify.app/mintlify-assets/_next/image?url=%2F_mintlify%2Fapi%2Fog%3Fdivision%3DCareers%26title%3DSoftware%2BEngineer%2B-%2BFull%2BStack%26logoLight%3Dhttps%253A%252F%252Fmintcdn.com%252Ffossorial%252F9WAmOv_Qa55BD82u%252Flogo%252Flight.png%253Ffit%253Dmax%2526auto%253Dformat%2526n%253D9WAmOv_Qa55BD82u%2526q%253D85%2526s%253Dddb2a0f7aadebfa3d421b276bdeaf183%26logoDark%3Dhttps%253A%252F%252Fmintcdn.com%252Ffossorial%252F9WAmOv_Qa55BD82u%252Flogo%252Fdark.png%253Ffit%253Dmax%2526auto%253Dformat%2526n%253D9WAmOv_Qa55BD82u%2526q%253D85%2526s%253D2da0d4d775d6121ee08813d57b61e74e%26primaryColor%3D%2523F36117%26lightColor%3D%2523F36117%26darkColor%3D%2523F36117%26backgroundLight%3D%2523ffffff%26backgroundDark%3D%25230e0b0b&w=1200&q=100
Pangolin offers identity-aware remote access to internal apps and services with a focus on zero-trust networking and open-source infrastructure. As a Full Stack Software Engineer, you'll help architect and maintain the core of the Pangolin system, shaping its development as a product and company.

It's the "hardware", stupid

AI 하드웨어가 실패한 이유와 OpenAI·조니 아이브의 혁신적 소비자 AI 기기 도전 과정

Sustainable memristors from shiitake mycelium for high-frequency bioelectronics

https://storage.googleapis.com/plos-corpus-prod/10.1371/journal.pone.0328965/1/pone.0328965.g001.PNG_I?X-Goog-Algorithm=GOOG4-RSA-SHA256&X-Goog-Credential=wombat-sa%40plos-prod.iam.gserviceaccount.com%2F20251031%2Fauto%2Fstorage%2Fgoog4_request&X-Goog-Date=20251031T142956Z&X-Goog-Expires=86400&X-Goog-SignedHeaders=host&X-Goog-Signature=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
Researchers used shiitake fungi to create memristors, which can mimic neural functions and be used in neuromorphic computing. Fungal memristors are environmentally sustainable, biodegradable, and can be grown using simple bioreactors.

Fire TV: Amazon to block piracy apps in the future

https://heise.cloudimg.io/width/610/q85.png-lossy-85.webp-lossy-85.foil1/_www-heise-de_/imgs/18/4/9/6/7/4/3/9/Streaming-Piraterie-a711c77c4e2bdafe.png
Amazon will block apps on Fire TV that provide access to pirated content starting today. Users will be notified before the app is blocked, but can still install apps via sideloading.

Perfetto: Swiss army knife for Linux client tracing

https://lalitm.com/img/perfetto-swiss-army-03.jpg
I gave a talk at the 2025 Tracing Summit last month titled “Perfetto: The Swiss Army Knife of Linux Client/Embedded Tracing”. My goal in this talk was to show how Linux kernel, systems and embedded developers can use Perfetto when debugging and root-causing performance issues in their respective domains. Even though the Perfetto UI is primarily built for viewing Android or Chrome traces, it ...

Floppy Disk / Diskettes // retrocmp / retro computing

https://retrocmp.de/fdd/diskette/3m-diskette_01.png
Floppy disks have size and sector distinctions, with 3.5 and 3 inch being soft-sectored and 5.25 inch hard-sectored. Hard-sectored disks are rare and can be emulated with a Virtual Sector Generator.

AMD could enter ARM market with Sound Wave APU built on TSMC 3nm process

https://www.guru3d.com/data/teaser/default/amd-logo.png
AMD is developing an ARM-based APU called "Sound Wave" for thin and light computing platforms. It features a 2 + 4 hybrid core design, 4 RDNA 3.5 compute units, and AMD's fourth-generation AI engine.

Just Use a Button

https://gomakethings.com/img/articles/that-not-how-it-works-thats-not-how-any-of-this-works.gif
A developer argues that using a <div> instead of a <button> can be problematic for accessibility. Adding a role attribute to a <div> does not fix keyboard navigation issues.

John Carmack on mutable variables

Something went wrong, but don’t fret — let’s give it another shot. Some privacy related extensions may cause issues on x.com. Please disable them and try again.

The cryptography behind electronic passports

https://blog.trailofbits.com/img/passports_figure_1.png
Electronic passports contain an embedded device with a filesystem, access controls, and cryptographic protocols to prevent unauthorized reading, eavesdropping, forgery, and copying. They use a secure channel to protect data, but legacy protocols put passport holders at risk.

Claude outage

Claude's Status Page - Elevated errors on claude.ai.

Wheels for free-threaded Python now available for psutil

psutil 7.1.2 now offers wheels for free-threaded Python, thanks to community effort. However, most popular packages still lack free-threaded wheels, requiring manual compilation.

Ask HN: Who uses open LLMs and coding assistants locally? Share setup and laptop

You're interested in real-world workflows for using open-source LLMs and coding assistants on laptops. You're looking for specific models, integrations, hardware, tasks, and reliability for a personal investigation.

Use DuckDB-WASM to query TB of data in browser

https://lil-blog-media.s3.amazonaws.com/macey_vertical_filing_cabinet_1903.jpg
As part of our Public Data Project, LIL recently launched Data.gov Archive Search. In this post, we look under the hood and reflect on how and why we built this project the way we did. Libraries, digital humanities projects, and cultural heritage organizations have long had to perform a balancing act when sharing their collections online, negotiating between access and affordability. ...

Rotating Workforce Scheduling in MiniZinc

https://zayenz.se/_astro/cactus_elapsed_time_base.BxWzAftW_Z1YEb3i.webp
A MiniZinc model is developed to solve the Rotating Workforce Scheduling problem, which involves creating a weekly schedule for a group of workers covering projected needs, with each worker rotating through different schedules. The model is tested with various solvers, including Gecode, OR-Tools CP-SAT, and HiGHS, and the results show that CP-SAT is the best solver for large instances, while ...

In orbit you have to slow down to speed up

https://media.wired.com/photos/68fa93b40f48aeee5d43d099/master/w_2560%2Cc_limit/GettyImages-1026002098.jpg
Flying a spaceship in space is much more complicated than driving a car due to the unique physics of orbital mechanics. To navigate in space, one must understand concepts like centripetal acceleration, gravitational force, and Newton's second law, and use techniques like the Hohmann transfer to successfully dock with a space station.

Nim 2.2.6

https://nim-lang.org/assets/img/twitter_banner.png
Nim Team released version 2.2.6 with 141 commits, including bugfixes and improvements. It features enhanced exception handling, performance improvements, and fixes 15 known issues.

Reasoning models reason well, until they don't

https://arxiv.org/static/browse/0.3.4/images/arxiv-logo-fb.png
Large reasoning models (LRMs) excel in simple reasoning tasks but fail catastrophically at higher complexity. A new dataset shows LRMs' performance drops abruptly at sufficient complexity, limiting their generalization.

Immutable releases are now generally available on GitHub

https://github.blog/wp-content/uploads/2025/10/506111520-dcadd7e0-74fd-4dc6-90c1-363ff053672c.jpg?resize=2064%2C1084
GitHub now supports immutable releases for supply chain security, protecting assets from tampering after publication. Immutable releases receive signed attestations for authenticity and integrity verification.

Addiction Markets: Abolish Corporate-Run Gambling

https://substackcdn.com/image/fetch/$s_!Gpib!,w_1456,c_limit,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fb3ae2e5e-e6ee-44c6-9faf-805eab47d3b6_881x468.png
Maryland state Senator Joanne C. Benson introduced a bill to repeal online sports wagering, part of a growing counter-attack against corporate-run gambling in America. Americans are increasingly turning against online sports betting due to its addictive nature and negative consequences.

Bertie the Brain

https://upload.wikimedia.org/wikipedia/en/thumb/b/b4/Bertie_the_Brain_-_Life.jpg/250px-Bertie_the_Brain_-_Life.jpg
Bertie the Brain is a 1950 computer game that played tic-tac-toe against an AI. It was built by Josef Kates for the Canadian National Exhibition and was largely forgotten after its two-week display.

Result is all I need

https://rockyj-blogs.web.app/images/result_card.png
The user discusses the limitations of relying on AI for software development, emphasizing the importance of code organization and quality. They propose using the Result monad to safely chain functions together, promoting clean and compartmentalized code.