fidzu : computers

Raymond Chen published another story from the Windows development trenches, this time about what happens when you hold down the power button. If you hold a PC's power button for 12 seconds, it will turn off at the hardware level without notifying the operating system. This is a safety feature so that you can turn of the computer even if the operating system's "Shut down" command isn't working. After eight seconds of the power button being held down, the Windows kernel realizes that the user is trying to do a force-power-off of the system, and it quickly takes a kernel dump that can be uploaded to the Windows Error Reporting service the next time you turn the system on. ↫ Raymond Chen I'm a bit confused by these numbers, because I have never seen a PC take this long to power off when holding down the power button; usually it takes only a few seconds to do so, meaning Windows would never generate said kernel dump. I tried reading through the various ATX specification documents to find more information on this, but then I remembered I'm not an electrical engineer so I have no idea what I'm looking at. The baseline is that ATX always provides standby power to the motherboard, and pressing the power button shorts the power button pin to ground, telling the PSU to power on fully. Pressing the power button if the computer is running tells the operating system to initiate a shutdown (although you can change this behaviour), but if you hold the button down for a certain number of seconds, it forces a power-off. So far, so good; basic information. It seems that the length of time you need to hold down the power button to force a power-off is dependent on the motherboard in question, handled by a microcontroller or some other IC. Virtually every source I can find says this timing is set to about 4-5 seconds, which is quite a bit shorter than the number of seconds given by Chen. Perhaps motherboard manufacturers consider the 12 seconds to be too long, and just do their own thing, regardless what the ATX specification suggests? What further complicates matters is that Chen details how the kernel dumps created after pressing the power button for 8 seconds do, in fact, get sent to Microsoft once the computer turns on again. In fact, he is one of the people who gets to see these dumps and respond to them, so obviously they are indeed rolling in. Does this mean there's a huge number of computers out there that require you to hold down the power button for 12 seconds to force a shutdown that nobody's ever seen? These emergency kernel dumps are internally classified as "long power button hold" (LPBH) failures. One of the pieces of information recorded in these emergency kernel dumps is whether the screen consists entirely of black pixels. Those failures are sub-classified as "black screen LPBH", and they go to a special virtual team for analysis. (I happen to be a member of this black screen LPBH team.) ↫ Raymond Chen What's going on here? Obviously, I'm not going to doubt Chen, so there must be something here I don't quite understand or that I'm missing. The ATX specification might suggest 12 seconds, but could Windows perhaps adapt its kernel dump behaviour - dumping much sooner than 8 seconds - based on the motherboard it's running on, maybe through information provided by the chipset drivers? I would love it if someone more knowledgeable than me can help us unravel this small mystery.

31 Oct 2026 7:54am GMT

From curl 8.12 through 8.16, config files could slice variable values and include other config files without an explicit depth cap. Together, these features let curl simulate any two-counter Minsky program. Under the usual idealization of unbounded strings and resources, this construction was Turing-complete. Curl 8.17.0 added a five-level include cap that breaks this reduction. ↫ Nicolas Seriot Neat.

31 Oct 2026 7:10am GMT

Google's first experimental space-based data center is operational after launching earlier this month, successfully running its Gemma 4 AI model aboard a satellite and generating a haiku about being in orbit. TechCrunch reports: The satellite, which carries four Google Tensor Processing Units (TPUs) and generates up to 1 kW of electricity, is intended to pave the way for future networks of close-flying satellites performing large inference workloads in orbit. However, the power demands of the TPU mean it can only turn one on for about 20 minutes at a time, complicating the already tricky business of space-to-ground communications. After a commissioning process that tested out the satellite's subsystems over about three weeks, the spacecraft was ready to work. When engineers on the ground sent their first prompt this week, they asked the model pre-loaded onto the satellite, Google DeepMind's Gemma 4, to write a haiku about being in space. And thus: Blue marble below Data streams in silent grace Starlight feeds my core. The ongoing test campaign will examine how the chips perform under thermal stress and in the space radiation environment. [...] If the TPUs onboard this spacecraft prove capable, the next step will be launching two more satellites equipped with the advanced chips in 2027. Those spacecraft will support higher power generation and demonstrate inter-satellite optical links.

Read more of this story at Slashdot.

31 Oct 2026 7:00am GMT

An anonymous reader quotes a report from Fortune: Gen Z can't catch a break. Entry-level jobs are vanishing; some 40% of bosses say they plan to hire fewer grads because AI can do the job cheaper, and young workers are routinely slammed for showing up late and refusing to put in overtime for free. Cisco's president and chief product officer Jeetu Patel isn't buying it -- he's just handed one of the company's biggest jobs to a 27-year-old he found hidden in the org chart "five levels" below him. "I've given him unlimited tokens because he's going to refactor code," Patel told Fortune at a small roundtable dinner. "So I'm like, you can go, you can go nuts." The "him" is Padmanabhan Krishnamurthy, or "Paddy," as Patel affectionately calls him. He joined Cisco in 2025 after the $429 billion tech giant acquired EzDubs, the real-time translation startup Krishnamurthy cofounded in 2023. And despite coming in as a former founder with CEO experience, he was, in Patel's words, "buried away in the organization doing something unstrategic." That changed when Patel dropped into Cisco's San Francisco office, and the pair got talking. Krishnamurthy reckoned he could rewrite Cisco's legacy code with a two-person team. Patel says even the most AI-forward people on his own team weren't thinking that way. So he has given himself four weeks to prove it, with the final goal of rewriting 98% of Cisco's legacy code within 24 months. Now, he's on the hunt for more Paddys: young hires who will "challenge the system and the status quo," or, as he puts it, be "an energizer bunny that just goes out and kind of revs everyone up." "The only way for us to keep accelerating is to make sure we're surrounded by people with a broad range of experience," said Patel. "Roughly one-third of my team is experienced, scaled operators who understand how the Cisco engine works. The second third are systems thinkers from the market who bring the outside-in perspective. And the final third is made of entrepreneurial founders, CEOs, and engineers who are AI-native who operate in founder mode." "Either of these groups by themselves aren't nearly as potent as when all three work together. It's what creates magic."

Read more of this story at Slashdot.

31 Oct 2026 3:30am GMT

The space agency solicited ideas for reboosting Hubble four years ago, but they didn't go anywhere.

31 Oct 2026 12:07am GMT

In an opinion piece for 404 Media, Matthew Gault argues that Apple has entered its "slop era," abandoning its reputation for innovative hardware in favor of recycled ideas and questionable design choices. Here's an excerpt: My ears perked up when I heard Apple's new foldable phones were cracking. I licked my lips when the company announced it's releasing a touch-screen laptop. This was a company that once charged $19 for a polishing cloth, asked $200 for a VESA mount, and sold $700 wheels for the Mac Pro. Now it's borrowing tired ideas from its competitors and launching hardware its previous leaders rejected. The once dominant company is struggling to find its feet in an AI-driven post-Tim Cook world. John Ternus is the new CEO -- a 25 year veteran of the company with a track record of pushing harebrained hardware schemes like the much reviled Touch Bar and lawsuit inducing butterfly keyboard. With Ternus at the helm, I feel there's a good chance Apple's best days are behind it, that it will have to make do with less, that it's declasse. Apple, blindsided by AI and relying on crowdpleasing hardware gimmicks, is downwardly mobile. It's in its slop era. The company that once asked consumers to "Think Different" is now releasing hardware that's just like everything else on the market.

Read more of this story at Slashdot.

30 Oct 2026 11:00pm GMT

USDA has identified 74 animal cases in US since parasitic flies invaded in June.

30 Oct 2026 10:36pm GMT

"For huge numbers of people, I will always be Jean-Luc Picard. ... We created an admirable individual."

30 Oct 2026 10:21pm GMT

AlpineBSD is an operating system based on the NetBSD kernel with a userspace inspired by Alpine Linux and the objective of making it possible to use as little AI-generated software as possible. There is no LLM output included in the base system or main package repository (AlpineBSD AI policy). ↫ AlpineBSD's website AlpineBSD uses the NetBSD kernel, libc, and essential tools, and combines them with Alpine's apk-tools package manager, busybox, and generlaly preferring GNU tools over their BSD equivalents. It uses the s6 init system, but the project intends to add OpenRC as an alternative. The project is in its very early stages, so don't expect things like an installer; you're on your own, basically.

30 Oct 2026 12:16am GMT

This is a story of how we got from something like this: Failed to deserialize BUILDINFO file: Parser failed with the following error: unknown ^ invalid makepkg build environment option expected `buildflags`, `ccache`, `check`, `color`, `distcc`, `sign`, `makeflags` To this: When the ALPM project started, the goal was fairly simple: Better tooling to interact with the low-level plumbing of Arch Linux Package Management (ALPM). This meant binaries to read/write individual file types, better error messages, extensive specifications and of course exports to common dataformats like JSON. The thing is, although some of us already had experience with low-level dataframe parsing, …

08 Oct 2026 12:00am GMT

Over the last few weeks, we have been doing research on the integration of our official distribution packages when installed on a target system. In this context we have been looking at the current uses of alpm-install-scriptlet(5) files and alpm-hooks(5) in around 120 package source repositories (alpm-source-repo(7)) to better understand the underlying functionality and use-cases these two integrations offer and target. In this article we are going to look at how these two systems work, how Arch Linux is currently using them and attempt to provide suggestions for when to use which. Learning about alpm-hooks(5) and alpm-install-scriptlet(5) files …

09 Aug 2026 12:00am GMT

Good morning from JetBrains Berlin office!

01 Jun 2026 12:00am GMT