Author Archives: pappp

Zombie ‘who owns Unix?’ lawsuit comes alive again

Source: The Register

Article note: What year is it? They had most of their claims dismissed, lost on standing, lost on merits, lost their parallel case with Novell, have been sold twice, but are apparently still trying to troll. 23 years later. The (notional) roots are Project Monterey, which was a 90s/early 2000s unified UNIX project that was doomed from the start, flopped, and was caught up in the Itanium failbus.

The ancient dispute over ownership of UNIX, and perhaps Linux too, has returned to court. Again. As The Register has explained many, many, times since this matter first went to court in 2003, the roots of the case are the 1998 alliance between IBM and a company called the Santa Cruz Operation which sold a version of UNIX for x86 CPUs. Those two companies, plus Intel and Sequent, created “Project Monterey” – an effort to create a unified version of UNIX that could run on multiple processors. By 2001, Project Monterey was close to delivering a unified UNIX, an achievement made possible by blending code from IBM and SCO. By then, a little project called “Linux” already ran on multiple processors. Big Blue decided Linux was the future and bailed from Project Monterey – then allegedly contributed some Monterey code to the open-source project and to its own AIX and Z operating systems. SCO felt it owned some of that code, so sued IBM. SCO and its successors struggled to survive, but interested parties kept the lawsuit alive because the chance to emerge as owner of parts of the Linux codebase, and IBM’s code, had the potential to turn into a colossal payday. The case and its successors ended in 2021, with a settlement that saw litigants agree to end the matter without IBM admitting fault. But by then, SCO had sold its software to a biz called Xinuos that decided to fight on. The Xinuos case has burbled along quietly since, and on June 22nd reached the milestone of a hearing. The matter has become a little more modern, if only because this hearing was held online and the presiding judge appeared to unwittingly be on mute at one point. But the arguments otherwise seemed to revisit Project Monterey, debated the relevance of past litigation, contested who owned what, when they owned it, and how they could prove it. Xinuos argued IBM never had a license for SCO code. Big Blue argued that it did nothing wrong. The core issue seems to be whether Xinuos even has the right to litigate the matter, or if some ancient legalese in the original agreements means the window for legal argument has long since expired. The matter continues and appears likely to do so until either the heat death of the universe or the year of Linux on the desktop – whichever comes sooner. ®

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Installing A/UX 1.1 like it’s the 90s

Source: Hacker News

Article note: A/UX has been tricky to emulate the quirky late 68k mac platforms it ran on reliably, cool to see Snow doing it.
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Physical disc production ending in Jan 2028 for new games on PlayStation

Source: Hacker News

Article note: Brought to you by the people who are retroactively deleting hundreds of movies from customer libraries. I'm so glad I grew up before this kind of bullshit was feasible enough to be normalized.
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Supreme Court Lifts Spending Limits on Political Parties and Candidates

Source: NYT > U.S.

Article note: Oh boy, we're doubling down on accelerating toward oligarchy.

Republicans had asked the court to strike down restrictions on how much political parties can spend in coordination with candidates.

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US Supreme Court rules geofence warrants require constitutional protections

Source: Hacker News

Article note: Good. Recognizing that the compelled consent of leaking location data to providers and services doesn't count as meaningful consent is really good for the landscape. I imagine cops are going to try to obscure dragnet behavior by buying the data through a commercial broker rather than officially compelling it, unless we put some actual restrictions on data brokers.
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Boffins build a better pixel capable of emitting and receiving light

Source: The Register

Article note: I had to go to the Nature article to figure out why they weren't just talking about a photodiode (I've done quite a bit of fiddling with bidirectional use of photodiodes, some of which is published). They're doing crazy plasmon shit to get phase and polarization control. Relevant and neat.

Researchers affiliated with ETH Zurich have devised a multifunction picture element, or pixel, that can both emit and measure light. Traditional pixels generally do one or the other – illuminating a display screen or capturing light in a camera sensor. A team led by David Norris, professor at ETH Zurich's Optical Materials Engineering Laboratory, has found a way to combine the two functions. The research raises the possibility of two-way screens that take and present pictures, holographic displays, optical communication systems, and quantum information processing. As described in the Nature article "Fourier pixels for bidirectional light control," the ETH Zurich boffins developed a technique that involves measuring light wave interference patterns over a metallic surface. By doing so, they're able to generate "Fourier pixels" that can create and detect the amplitude, phase and polarization of optical fields. The Fourier transform is a mathematical technique that takes a function like a sound wave and returns a function representing the specific frequencies present in that sound. A Fourier pixel represents the spatial frequency of light rather than the specific brightness at a given point in an image. "Thanks to the fact that the relevant surface profiles of the pixels can be determined using Fourier analysis, we can combine the control and analysis of amplitude, phase and polarisation on a single pixel," said post-doc Sander Vonk in an ETH Zurich press release. In the near term, Norris expects to put Fourier pixels into a matrix that can be used to construct more sophisticated camera displays. The other authors included Yannik M. Glauser, David B. Seda, Hannah Niese, Boris de Jong, Matthieu F. Bidaut, Daniel Petter, Erwan Bossavit, Gabriel Nagamine, and Nolan Lassaline. ®

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Siboor Voron Trident (300mm CNC/AWD)

My recently constructed Siboor Trident, making a part.

I decided it was time for a 3D printer upgrade recently. I did some playing with my old Kossel, adding braces and changing some tuning since it runs Klipper, and while it continues to be a fine machine for small PLA parts, and a fun project, I wanted more volume, more speed, and an enclosure so I can run a wider range of materials.
Instead of doing something reasonable and spending O($500) on one of the various commercial options that meets the “Enclosed, Larger, Faster 3D printer that I can run a wider range of materials on” prompt (the Qidi Q2 was a close contender) I decided I wanted to build a Voron Trident.

I did “some” reading so I had opinions on mods I wanted out of the gate… and ended up buying one of the ‘roided out Siboor Voron Trident “June ’24” 300mm CNC/AWD kits for (once import duties were paid and such) about $1500. That includes their “Booster Pack 1” option, so it has steel backers on Y, aluminum gantry corner braces (this was the feature I cared about – triangles are good), and TMC5160Ts on the X/Y motors, in addition to the kit standard CNC gantry with double-shear mounts and AWD (they nicely include the 2WD idlers as well, but don’t document the belt path using them), 9mm belts, inverted electronics, clickyclack door, fume pack, and (frankly kind of questionable) side booster fan. I thought I was getting a CB2 for the computer, but it came with a Pi CM4 (CM4102032), which I’m pleased about.
I went for Siboor’s kit despite the Trident R2 already being partially announced because I wanted several of the nonstandard features they bundle, and I wanted to be sure I had it while I had time to spend the several-tens-of-hours to build and tune it before I had academic year obligations.

I ordered the kit via Siboor’s Aliexpress storefront May 14, it was delivered June 10, and printing June 20. It’s currently built essentially to kit instructions, and I’m very pleased with the build process and result. Since so much knowledge about these things is disappearing into search-proof proprietary silos (lookin’ at you, Discord), too much detail below.

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Windows 10 quietly gets one more year of support and updates

Source: Hacker News

Article note: The slow admission that Windows 11 is an unacceptable successor is always funny.
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GitHub shouldn’t be a dependency for publishing Rust on crates.io

Source: Hacker News

Article note: Happy to see they're finally making progress to fix it, that was a bad-but-expedient decision over a decade ago, which has become steadily less justifiable.
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Boffin claims Microsoft’s “quantum leap” is invalid due to “basic Python errors”

Source: Hacker News

Article note: Experimental code appears to be wildly incorrect, some of it in a way that looks like the people writing it _may_ have been trying to hide that it's bogus (or it's just bad code that produced something appealing, and they got excited, it happens). Array indices do in fact correlate with... themselves. Published without anyone internal noticing to much hype, now people can see the code and call BS. The fabulous state of the Quantum field, on display.
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