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Hotspot: A slick GUI for Linux perf performance analysis

2025-05-22

Hotspot: A slick GUI for Linux perf performance analysis

KDAB has developed Hotspot, a standalone GUI for performance data analysis, initially focusing on visualizing Linux perf data in a KCachegrind-like interface. It offers graphical visualization, timeline filtering, and the ability to launch perf to profile applications. Available as an AppImage for easy cross-distribution use, or via package managers (AUR, Debian, Ubuntu, Fedora), Hotspot allows users to analyze on-CPU and off-CPU time, exporting data for sharing. While not yet feature-complete, Hotspot simplifies Linux performance analysis.

(github.com)

Development

Soviet Hero: The Extraordinary Rescue of Shavarsh Karapetyan

2025-01-14

Soviet Hero: The Extraordinary Rescue of Shavarsh Karapetyan

Shavarsh Karapetyan, a former Soviet finswimmer, is renowned for his incredible bravery in saving the lives of 20 people during a 1976 trolleybus accident in Yerevan. In freezing, murky water, he repeatedly dived into the submerged vehicle, pulling people to safety. Despite suffering severe injuries and contracting pneumonia, he still competed and set a world record. Karapetyan's heroic act is a testament to human courage and selflessness, a truly inspiring legend.

(en.wikipedia.org)

Misc heroism rescue

QVQ-Max: An AI Model with Both Vision and Intellect

2025-04-06

QVQ-Max: An AI Model with Both Vision and Intellect

QVQ-Max is a novel visual reasoning model that not only 'understands' images and videos but also analyzes and reasons with this information to solve various problems. From math problems to everyday questions, from programming code to artistic creation, QVQ-Max demonstrates impressive capabilities. It excels at detailed observation, deep reasoning, and flexible application in various scenarios, such as assisting with work, learning, and daily life. Future development will focus on improving recognition accuracy, enhancing multi-step task handling, and expanding interaction methods to become a truly practical visual agent.

(qwenlm.github.io)

AI Visual Reasoning

OpenAI's Mathematical Proof: Why ChatGPT's Hallucinations Are Here to Stay (Maybe)

2025-09-13

OpenAI's Mathematical Proof: Why ChatGPT's Hallucinations Are Here to Stay (Maybe)

OpenAI's latest research paper mathematically proves why large language models like ChatGPT "hallucinate" – confidently fabricating facts. This isn't simply a training issue; it's mathematically inevitable due to the probabilistic nature of word prediction. Even perfect data wouldn't eliminate the problem. The paper also reveals a flawed evaluation system that penalizes uncertainty, incentivizing models to guess rather than admit ignorance. While OpenAI proposes a confidence-based solution, it would drastically impact user experience and computational costs, making it impractical for consumer applications. Until business incentives shift, hallucinations in LLMs are likely to persist.

(theconversation.com)

AI Hallucination

Donkey Kong's Broken Ladder Glitch: Luck and Skill Combine for a New Kill Screen

2025-02-08

Donkey Kong's Broken Ladder Glitch: Luck and Skill Combine for a New Kill Screen

The 'broken ladder' glitch in the classic arcade game Donkey Kong, long thought impossible to exploit, has been conquered. Player Kosmic, using an emulator and a hefty dose of luck, utilized the glitch to not only complete the game but discover a new, true kill screen at level 22-6. The glitch exploits a random delay in Donkey Kong's barrel throwing, giving Mario precious extra frames. This achievement highlights the game's intricate mechanics and underscores the crucial role of both skill and chance in overcoming seemingly insurmountable challenges.

(arstechnica.com)

Game game glitch luck

Microsoft's Recall Feature and Five Zero-Day Vulnerabilities Spark Privacy Concerns

2025-05-27

Microsoft's Recall Feature and Five Zero-Day Vulnerabilities Spark Privacy Concerns

Microsoft's latest Patch Tuesday update revealed five zero-day vulnerabilities in Windows, raising concerns about system security. Furthermore, Microsoft's Recall feature, which captures and stores screen content every few seconds, has drawn heavy criticism for its inherent privacy risks. Even if users disable the feature, the possibility of government-mandated activation adds to the anxieties, given the near-ubiquitous nature of Microsoft IDs.

(www.computerworld.com)

Tech Windows vulnerabilities

Debugging Java Logic Errors with Unit Tests

2025-05-07

Debugging Java Logic Errors with Unit Tests

Logic errors in Java development are notoriously difficult to debug using traditional methods. This article introduces a test-driven debugging approach, utilizing unit tests to discover and pinpoint logic errors. It details various testing techniques, including hypothesis testing, state progression tests, and regression testing, and explains how to leverage test results to understand code behavior and ultimately improve logic. The article also mentions AI-assisted unit testing tools that can help developers more effectively uncover potential logic vulnerabilities.

(www.qodo.ai)

Development Logic Errors

Milwaukee M18 Battery Teardown: A Battle with 0402 Components

2025-04-17

This detailed blog post documents a multi-month reverse engineering project of discarded Milwaukee M18 batteries. The author faced numerous challenges, from disassembling the battery casing and identifying tiny components like Texas Instruments MSP430G2744 microcontroller and BQ76925 battery monitor IC, to meticulously mapping the circuit board and deciphering the communication protocol between the battery and charger. The author shares their findings, including the surprising lack of cell balancing and details of the 2000 baud communication protocol. This is a fascinating deep dive into hardware reverse engineering, perfect for those interested in the intricacies of battery technology and electronics.

(quagmirerepair.com)

Hardware battery

Observability 2.0: Beyond the Three Pillars, Embracing Wide Events

2025-04-25

Observability 2.0: Beyond the Three Pillars, Embracing Wide Events

Charity Majors of Honeycomb introduced the concept of 'Observability 2.0,' representing an evolution from the traditional 'metrics, logs, and traces' paradigm. Observability 2.0 centers around 'wide events' as a single source of truth – high-cardinality, high-dimensional event data rich in context. This allows for the retroactive derivation of metrics, logs, and traces, addressing issues like data silos and limitations of pre-aggregation. However, this transition presents challenges in event generation, data transport, storage, and querying. GreptimeDB, an open-source analytical observability database, aims to overcome these hurdles. It supports OpenTelemetry, features a built-in transformation engine, high-throughput real-time ingestion, real-time query APIs, and materialized views, providing a robust infrastructure for Observability 2.0.

(greptime.com)

Development

Defying Planet Formation Theories: A Giant Planet Around a Tiny Red Dwarf

2025-06-04

Defying Planet Formation Theories: A Giant Planet Around a Tiny Red Dwarf

Astronomers have discovered a giant planet, TOI-6894b, orbiting the small red dwarf star TOI-6894, which is only about 20% the mass of our Sun. This discovery challenges leading planet formation theories, as core accretion models predict that giant planets are unlikely to form around such low-mass stars. TOI-6894b's low density and cool temperature make it a unique case, offering an excellent opportunity to study planetary atmospheres. Future observations by the James Webb Space Telescope will investigate TOI-6894b's atmosphere to unravel the mysteries of its formation.

(www.ucl.ac.uk)

Tech

arXivLabs: Experimenting with Community Collaboration

2025-03-17

arXivLabs is a framework for collaborators to develop and share new arXiv features directly on the arXiv website. Individuals and organizations involved with arXivLabs uphold arXiv's values of openness, community, excellence, and user data privacy. arXiv is committed to these values and only works with partners who share them. Have an idea for a project that will benefit the arXiv community? Learn more about arXivLabs.

(arxiv.org)

Development

800-Year-Old Kid's Doodles: A Glimpse into Medieval Childhood

2025-04-16

800-Year-Old Kid's Doodles: A Glimpse into Medieval Childhood

Soviet archaeological excavations unearthed birch bark sketches from medieval Novgorod, circa 1250 CE, created by a schoolboy named Onfim. His whimsical drawings—horses, soldiers, self-portraits—reveal the expressive capabilities of medieval children. Contrasting this are charcoal drawings found in a French iron mine, depicting child miners, a poignant reflection of their harsh reality. These discoveries offer a unique perspective on premodern childhood, highlighting its universality and diverse experiences across time and culture.

(resobscura.substack.com)

Misc Medieval children Art history Archaeological discovery

Val: An Arbitrary-Precision Calculator Language

2025-04-17

Val: An Arbitrary-Precision Calculator Language

Val is a simple arbitrary-precision calculator language built on top of chumsky and ariadne. It runs on Linux, MacOS, BSDs, and Windows. Installation is easy via Cargo, or pre-built binaries are available. Val features a command-line interface and REPL with syntax highlighting, persistent history, and emacs-style editing. The language supports functions, loops, conditionals, and a rich set of built-in functions covering arithmetic, logical, comparison, and collection operations. Data types include numbers, booleans, strings, and lists.

(github.com)

Development

I Built the PS1 Backwards Compatibility Emulator for the PS2

2025-02-08

I Built the PS1 Backwards Compatibility Emulator for the PS2

A Sony Computer Entertainment engineer recounts his experience developing the PlayStation 2's PS1 backward compatibility. Initially tasked with emulating the PS1's sound hardware, his work became obsolete when the chip was integrated into the PS2. Unexpectedly, he was then assigned to emulate the PS1's graphics processor, a significant challenge. He successfully completed the task, enabling most PS1 games to run on the PS2 and contributing significantly to its launch success. This became the most important and proudest achievement of his career.

(freelansations.medium.com)

Game

Microsoft Opens Windows Update to Third-Party Apps

2025-05-28

Microsoft Opens Windows Update to Third-Party Apps

Microsoft is expanding Windows Update to include third-party applications. Developers can now sign up for a private preview of the Windows Update orchestration platform, enabling future support for updates to any app or driver. While initially focused on business apps, it will be open to all apps and management tools. This allows developers to leverage scheduled updates based on user activity, battery status, and sustainable energy timing, connect directly to native Windows Update notifications, and list updates in the Windows Update app history. Microsoft will support MSIX/APPX packaged apps and some custom Win32 apps.

(www.theverge.com)

Development Third-party Apps

Mass-Production Ready: A 3D-Printed Soft Robot Walks Off the Printer

2025-05-31

Mass-Production Ready: A 3D-Printed Soft Robot Walks Off the Printer

Scientists at the University of Edinburgh have developed a mass-production-capable soft robot 3D-printed in a single, nine-hour process using a $500 open-source printer. The quadruped robot, made of flexible TPU, overcomes the challenges of 3D-printing this material by using a larger filament and an upside-down printing technique. Air-powered, this easily reproducible bot shows promise for applications in exploration, medicine, and search and rescue, paving the way for wider adoption of soft robotics.

(newatlas.com)

Tech soft robotics mass production

Chonkify: An Ultra-Lightweight Chunking Library

2025-06-03

Chonkify: An Ultra-Lightweight Chunking Library

Chonkify is an ultra-lightweight JavaScript library for splitting various iterables (arrays, strings, sets, maps, async iterables, etc.) into chunks of a specified size. It supports Unicode emojis and complex symbols, boasts a tiny footprint (core is just 870 bytes), has zero dependencies, is ESM-first and TypeScript-ready, and works in both browser and Node.js environments. Whether processing massive datasets or simple array splitting, chonkify handles it efficiently.

(github.com)

Development chunking

Einsum: Beyond Matrix Multiplication

2025-01-06

Einsum is more than just matrix multiplication; it's an efficient implementation of Einstein summation convention. It uses concise notation to represent complex tensor operations, avoiding nested loops and improving code readability and performance. This article delves into the mechanics of Einsum, demonstrating its advantages in handling high-dimensional tensor operations such as matrix multiplication, transposition, and trace calculations with illustrative examples. For developers needing high-performance tensor computations, Einsum is an invaluable tool.

(einsum.joelburget.com)

Development Tensor operations High-performance computing

Phoronix Benchmarks AMD Ryzen AI Max PRO 390 & Radeon 8050S Integrated Graphics

2025-06-06

Phoronix published a comprehensive Linux benchmark review of AMD's Ryzen AI Max PRO 390 processor and its integrated Radeon 8050S graphics. The Radeon 8050S, featuring 32 cores at 2.8GHz, slots between the Radeon 8060S and 890M in performance. Supporting resolutions up to 8K@60Hz, the review includes various game and benchmark tests, comparing it against other integrated graphics from AMD and Intel. The Radeon 8050S showed excellent out-of-the-box performance on Ubuntu 25.04 and Fedora 42.

(www.phoronix.com)

Hardware Integrated Graphics

UK's Online Safety Act Forces Lobsters Forum to Consider Geoblocking UK Users

2025-02-23

The UK's Online Safety Act (OSA), set to take effect March 16, 2025, poses a significant threat to the non-commercial hobbyist forum, Lobsters. The sweeping law's jurisdiction extends to all sites where users interact, regardless of hosting location, and carries hefty penalties. Unable to comply with OSA's complex regulations, Lobsters faces the difficult decision of geoblocking UK users. The author urges UK users to help by seeking regulatory waivers, legal counsel, or other solutions to avoid the forum's closure.

(web.archive.org)

Misc Online Safety Act Internet Regulation

SonShell: Auto-Download Your Sony Camera Photos with Ease

2025-09-25

SonShell: Auto-Download Your Sony Camera Photos with Ease

SonShell is a Linux-only helper built on Sony's official Camera Remote SDK. It connects to a Sony A6700 camera (Wi-Fi/Ethernet), automatically downloads new photos, and optionally runs a script on each downloaded file. Features include auto-connect via enumeration or direct IP/MAC, automatic reconnection, safe file naming, and more. The developer heavily used ChatGPT during creation, resulting in clean and understandable code. Perfect for Linux users who want to streamline their photography workflow.

(github.com)

Development Sony Camera Auto-Download Linux Tool

Google AI Search: Hallucinations More Convincing Than Facts?

2025-05-31

The author attempted to use Google AI search to find an old IBM PS/2 server model, only to discover the AI repeatedly giving fabricated and contradictory answers, even inventing a non-existent model, "PS/2 Model 280," and its specifications. While the AI occasionally provides the correct answer, the incorrect answers are more convincing because they are detailed and appear realistic. This highlights the potential for significant errors in AI search results; even if an answer sounds convincing, it may not correspond to reality. Users should exercise caution.

(www.os2museum.com)

Tech information accuracy

ESP32 Bluetooth Controller 'Backdoor': A False Alarm?

2025-03-11

Recent concerns have emerged regarding a potential "backdoor" or "undocumented features" in the ESP32 Bluetooth controller. Espressif has responded, stating that the so-called "undocumented HCI commands" are solely for debugging purposes and do not pose a security threat. These commands assist in debugging (e.g., read/write RAM, memory-mapped flash read, send/receive packets), and don't play an active role in standard Bluetooth host stack (like NimBLE or Bluedroid) HCI communication. In ESP32, the controller and host run on the same MCU, communicating via a virtual HCI layer. Any code accessing this layer must execute on the ESP32 with full privileges. Therefore, unless the application itself has vulnerabilities, these undocumented commands cannot be exploited. Espressif will provide a software patch to remove access to these debug commands and will document all vendor-specific HCI commands for greater transparency.

(developer.espressif.com)

Hardware Bluetooth Security

Unlock 3D Photos with Your Eyes: A Simple Guide to Cross-View Stereoscopy

2025-02-26

Unlock 3D Photos with Your Eyes: A Simple Guide to Cross-View Stereoscopy

Your brain is a natural 3D powerhouse! It can reconstruct a three-dimensional scene from just two slightly different 2D images. This article unveils a simple method to experience 3D photos without specialized equipment – cross-view stereoscopy. By taking two pictures of the same scene from slightly different angles, and then focusing your eyes on each image respectively, your brain will magically merge them into a single 3D image. The article explores the artistic potential of 3D photos, arguing that it can better represent the depth and detail of complex scenes like forests and caves, opening up new possibilities for photography and art.

(moultano.wordpress.com)

Tech 3D vision cross-view stereoscopy

The AI Tattoo Generator Revolutionizing Personalized Ink

2025-01-07

The AI Tattoo Generator Revolutionizing Personalized Ink

Tired of generic tattoo designs? The #1 AI tattoo generator lets you create professional, unique tattoo designs with ease. Simply input your preferences and generate a wide range of styles, fulfilling your vision for personalized body art. Skip the long wait times and high costs of traditional tattoo artists; this AI tool is changing the tattoo game.

(www.tattoopro.ai)

Design Tattoo

Supreme Court Weighs Fate of $8 Billion Telecom Subsidy

2025-03-26

Supreme Court Weighs Fate of $8 Billion Telecom Subsidy

The Supreme Court is hearing a case that could determine the fate of an $8 billion annual subsidy for phone and internet services in schools, libraries, and rural areas. The Universal Service Fund, which is funded by a tax on phone bills, is challenged on constitutional grounds. While both liberal and conservative justices expressed concern over the potential consequences of eliminating the fund, some justices questioned the level of authority delegated to the FCC and its reliance on a private administrator. A decision is expected by late June, with significant implications for tens of millions of Americans.

(apnews.com)

Tech Supreme Court Subsidy Telecommunications

iOS 26 FaceTime's Surprise: Auto-Freezing Nudity in Video Calls

2025-07-06

iOS 26 FaceTime's Surprise: Auto-Freezing Nudity in Video Calls

An unexpected feature in the iOS 26 beta has surfaced: FaceTime automatically freezes video and audio when nudity is detected, displaying a warning message with options to resume or end the call. Initially intended for child account communication safety, this function seems to be active for adult accounts as well. While Apple emphasizes on-device machine learning, preventing content upload, this unintended application raises privacy concerns.

(9to5mac.com)

Tech

C++ Metaprogramming: Ditching IILEs in Favor of Expansion Statements and Structured Bindings

2025-03-26

This blog post explores how to streamline C++ metaprogramming, reducing reliance on Immediately Invoked Lambda Expressions (IILEs) by leveraging the `expand` helper, expansion statements, and structured bindings. It details element-wise expansion, early returns, and returning values, showing how to transform arbitrary ranges into packs for efficient compile-time data manipulation. These techniques significantly improve code readability and maintainability, avoiding verbose coding practices.

(pydong.org)

Development C++ metaprogramming expansion statements structured bindings

Microsoft Kills Off Remote Desktop App, Forcing Migration to Windows App

2025-04-04

Microsoft Kills Off Remote Desktop App, Forcing Migration to Windows App

Microsoft is ending support for its legacy Remote Desktop application on May 27th, mandating a migration to the new Windows App. While the new app offers unified access to services like Windows 365 and Azure Virtual Desktop, along with features such as customizable home screens and multi-monitor support, it also has limitations. Some proxy server environments and AD FS single sign-on are not supported, leading to user inconvenience. The move has been criticized by some as "the dumbest rebranding ever."

(www.theregister.com)

Tech

The Cat Symphony: A Tale of Friendship and Art

2025-04-14

The Cat Symphony: A Tale of Friendship and Art

An Austrian painter created his *Katzensymphonie* to celebrate violinist Joseph Joachim's appointment as director of Berlin's Hochschule für Musik. The painting's origins lie in 'Die Schwarzen Katzen,' a society founded in 1862 by contralto Amalie Joachim and friends, including Johannes Brahms, Julius Otto Grimm, and Clara Schumann. Membership was based on a 'cat-like' appreciation for fine things and friendship, with the constitution even detailing punishments for un-cat-like behavior. The painting and the society's story reveal a deep friendship and shared artistic passion.

(publicdomainreview.org)

Misc Die Schwarzen Katzen

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