fidzu : Operating Systems

Tribblix, the Illumos distribution focused on giving you a classic UNIX-style experience, doesn't only support x86. It also has a branch for SPARC, which tends to run behind its x86 counterpart a little bit and has a few other limitations related to the fact SPARC is effectively no longer being developed. The Tribblix SPARC branch has been updated, and now roughly matches the latest x86 release from a few weeks ago. The graphical libraries libtiff and OpenEXR have been updated, retaining the old shared library versions for now. OpenSSL is now from the 3.5 series with the 3.0 api by default. Bind is now from the 9.20 series. OpenSSH is now 10.2, and you may get a Post-Quantum Cryptography warning if connecting to older SSH servers. 'zap install' now installs dependencies by default. 'zap create-user' will now restrict new home directories to mode 0700 by default; use the -M flag to choose different permissions. Support for UFS quotas has been removed. ↫ Tribblix release notes There's no new ISO yet, so to get to this new m34 release for SPARC you're going to have to install from an older ISO and update from there.

15 Apr 2026 8:18pm GMT

Another Haiku monthly activity report, but this time around, there's actually a big ticket item. Haiku has been in a pretty solid and stable state for a while now, so the activity reports have been dominated by fairly small, obscure changes, but during March a major milestone was reached for the ARM64 port. smrobtzz contributed the bulk of the work, including fixes for building on macOS on ARM64, drivers for the Apple S5L UART, fixes to the kernel base address, clearing the frame pointer before entering the kernel, mapping physical memory correctly, the basics for userland, and more. SED4906 contributed some fixes to the bootloader page mapping, and runtime_loader's page-size checks. Combined, these changes allow the ARM64 port to get to the desktop in QEMU. There's a forum thread, complete with screenshots, for anyone interested in following along. ↫ waddlesplash While it's only in QEMU, this is still a major achievement and paves the way for more people to work on the ARM64 port, possibly increasing its health. There's tons of smaller changes and fixes all over the place, too, as usual, and the team mentions beta 6 isn't quite ready yet, still. Don't let that stop you from just downloading the latest nightly, though - Haiku is mature enough to use it.

15 Apr 2026 3:10pm GMT

The editor in chief of this blog was born in 2004. She uses the 1997 window manager, Enlightenment E16, daily. In this article, I describe the process of fixing a show-stopping, rare bug that dates back to 2006 in the codebase. Surprisingly, the issue has roots in a faulty implementation of Newton's algorithm. ↫ Kamila Szewczyk I'm not going to pretend to understand any of this, but I know you people do. Enjoy.

15 Apr 2026 2:00pm GMT

Modern laptops promise a kind of magic. Shut the lid or press the sleep button, toss it in a backpack, and hours, days, or weeks later, it should wake up as if nothing happened with little to no battery drain. This sounds like a fairly trivial operation - y'know, you're literally just asking for the computer to do nothing - but in that quiet moment when the fans whir down, the screen turns dark, and your reflection stares back at you, your computer and all its little components are actually hard at work doing their bedtime routine. ↫ Aymeric Wibo at the FreeBSD Foundation A look at how suspend and resume works in practice, from the perspective of FreeBSD. Considering FreeBSD's laptop focus in recent times, not an unimportant subject.

15 Apr 2026 1:51pm GMT

A few weeks ago, Microsoft made some concrete promises about fixing and improving Windows, and among them was removing useless "AI" integrations. Applications like Notepad, Snipping Tool, and others would see their "AI" features removed. Well, it turns out Microsoft employs a very fringe definition of the concept. Microsoft seems to have stripped away mentions of the "Copilot" brand in the Windows Insider version of the Notepad app. The Copilot button in the toolbar is gone, and instead, you'll find a writing icon which will present you AI-powered writing assistance, such as rewrite, summarize, tone modification, format configuration, and more. Additionally, "AI features" in Notepad settings has been renamed to "Advanced features" and it allows users to toggle off AI capabilities within the app. ↫ Usama Jawad at Neowin If the recent changes to Notepad are any indication, it seems Microsoft is, actually, not at all going to "reducing unnecessary Copilot entry points", as they worded it, but is merely just going to rename these features so they aren't so ostentatiously present. At least, that seems to be the plan for Notepad, and we'll have to see if they have the same plans for the other applications. I mean, they have to push "AI" or look like fools. I just don't understand how a company like Microsoft can be so utterly terrible at communication. While I personally would want all "AI" features yeeted straight from Windows, I'm sure a ton of people are just fine with the features being less in-your-face and stuffed inside a normal menu alongside all the other normal features. They could've just been honest about their intentions, and it would've been so much better. Like virtually every other technology company, Microsoft just seems incapable of not lying.

14 Apr 2026 9:28pm GMT

Ever heard of a condition called bixonimania? Did you search the internet or ask your "AI" girlfriend about some symptoms you were experiencing, and this was its answer? Well… The condition doesn't appear in the standard medical literature - because it doesn't exist. It's the invention of a team led by Almira Osmanovic Thunström, a medical researcher at the University of Gothenburg, Sweden, who dreamt up the skin condition and then uploaded two fake studies about it to a preprint server in early 2024. Osmanovic Thunström carried out this unusual experiment to test whether large language models (LLMs) would swallow the misinformation and then spit it out as reputable health advice. "I wanted to see if I can create a medical condition that did not exist in the database," she says. ↫ Chris Stokel-Walker at Nature And "AI" ate it up like quality chocolate. It started appearing in the answers from all the popular "AI" tools within weeks, and later even started showing up as references in published literature, indicating that scientists copy/paste references without actually reading them. This is clearly a deeply concerning experiment, and highlights there may be many, many more nonsensical, fake studies being picked up by "AI" tools. Of course, I hear you say, it's not like propagating fake or terrible studies is the sole domain of "AI", as there are countless cases of this happening among actual real researchers and scientists, too. The issue, though, is that the fake studies concerning "bixonimania" were intentionally made to be as silly and obviously ridiculous as possible. It references Starfleet Acadamy, the lab aboard the Enterprise, the University of Fellowship of the Ring, and many other fake references instantly recognisable as such by real humans. In fact, the studies even specifically mention that "this entire paper is made up" and "fifty made-up individuals aged between 20 and 50 years were recruited for the exposure group". It would take any human only a few seconds after opening one of these papers to realise they're entirely fake - yet, the world's most advanced "AI" tools gobbled them up and spit them back out as pure fact within mere weeks of their publication This shouldn't come as a surprise. After all, "AI" tools have no understanding, no intelligence, no context, and they can't actually make sense of anything. They are glorified pachinko machines with the output - the ball - tumbling down the most likely path between the pins based on nothing but chance and which pins it has already hit. "AI" output understands the world about as much as the pachinko ball does, and as such, can't pick up on even the most obvious of cues that something is a fake or a forgery. It won't be long before truly nefarious forces start doing this very same thing. Why build, staff, and maintain a troll farm when you can just have "AI" generate intentional misinformation which will then be spread and pushed by even more "AI"? Remember, it took one malicious asshole just one long since retracted fake paper to convince millions that vaccines cause autism. I shudder to think how many people are accepting anything "AI" says as gospel.

13 Apr 2026 1:02pm GMT

Version 7.0 of the Linux kernel has been released, marking the arbitrary end of the 6.x series. Significant changes in this release include the removal of the "experimental" status for Rust code, a new filtering mechanism for io_uring operations, a switch to lazy preemption by default in the CPU scheduler, support for time-slice extension, the nullfs filesystem, self-healing support for the XFS filesystem, a number of improvements to the swap subsystem (described in this article and this one), general support for AccECN congestion notification, and more. See the LWN merge-window summaries (part 1, part 2) and the KernelNewbies 7.0 page for more details. ↫ corbet at LWN.net You can compile the kernel yourself, or just wait until it hits your distribution's repositories.

13 Apr 2026 12:19pm GMT

It shouldn't be a surprise that companies - and for our field, technology companies specifically - working with the defense industry tends to raise eyebrows. With things like the genocide in Gaza, the threats of genocide and war crimes against Iran, the mass murder in Lebanon, it's no surprise that western companies working with the militaries and defense companies involved in these atrocities are receiving some serious backlash. With that in mind, it seems Red Hat, owned by IBM, is desperately trying to scrub a certain white paper from the internet. Titled "Compress the kill cycle with Red Hat Device Edge", the 2024 white paper details how Red Hat's products and technologies can make it easier and faster to, well, kill people. Links to the white paper throw up 404s now, but it can still easily be found on the Wayback Machine and other places. It's got some disturbingly euphemistic content. The find, fix, track, target, engage, assess (F2T2EA) process requires ubiquitous access to data at the strategic, operational and tactical levels. Red Hat Device Edge embeds captured, analyzed, and federated data sets in a manner that positions the warfighter to use artificial intelligence and machine learning (AI/ML) to increase the accuracy of airborne targeting and mission-guidance systems. Delivering near real-time data from sensor pods directly to airmen, accelerating the sensor-to-shooter cycle. Sharing near real-time sensor fusion data with joint and multinational forces to increase awareness, survivability, and lethality. The new software enabled the Stalker to deploy updated, AI-based automated target recognition capabilities. If the target is an adversary tracked vehicle on the far side of a ridge, a UAS carrying a server running Red Hat Device Edge could transmit video and metadata directly to shooters. ↫ Red Hat white paper titled "Compress the kill cycle with Red Hat Device Edge" I don't think there's something inherently wrong with working together with your nation's military or defense companies, but that all hinges on what, exactly, said military is doing and how those defense companies' products are being used. The focus should be on national defense, aid during disasters, and responding to the legitimate requests of sovereign, democratic nations to come to their defense (e.g. helping Ukraine fight off the Russian invasion). There's always going to be difficult grey areas, but any military or defense company supporting the genocide in Gaza or supplying weapons to kill women and children in Iran is unequivocally wrong, morally reprehensible, and downright illegal on both an international and national level. It clearly seems someone at Red Hat feels the same way, as the company has been trying really hard to memory-hole this particular white paper, and considering its word choices and the state of the world today, it's easy to see why. Of course, the internet never forgets, and I certainly don't intend to let something like this slide. We all know companies like Microsoft, Oracle, and Google have no qualms about making a few bucks from a genocide or two, but it always feels a bit more traitorous to the cause when it's an open source company doing the profiting. It feels like Red Hat is trying to have its cake and eat it too, by, as an IBM subsidiary, trying to both profit from the vast sums of money sloshing around in the US military industrial complex as well as maintain its image as a scrappy open source business success story shitting bunnies and rainbows. It's a long time ago now that Red Hat felt like a genuine part of the open source community. Most of us - both outside and inside of Red Hat, I'm sure - have been well aware for a long time now that those days are well behind us, and I guess Red Hat doesn't like seeing its kill cycle this compressed.

10 Apr 2026 8:04pm GMT

If you want to run FreeBSD on a laptop, you're often yanked back to the Linux world of 20 years ago, with many components and parts not working and other issues such as sleep and wake problems. FreeBSD has been hard at work improving the experience of using FreeBSD on laptops, and now this has resulted in a list of laptops which work effortlessly with the venerable operating system. There's only about 10 laptops on the list so far, but they do span a range of affordability and age, with some of them surely being quite decent bargains on eBay or whatever other used stuff marketplace you use. If you want to use FreeBSD on a laptop, but don't want to face any surprises or do any difficult setup, get one of the laptops on this list - a list which will surely expand over time.

10 Apr 2026 2:41pm GMT

It may sound unbelievable to some, but not everyone has a datacenter beast with 128GB of VRAM shoved in their desktop PCs. Around the world people tell the tale of a particularly fierce group of Linux gamers: Those who dare attempt to play games with only 8 gigabytes of VRAM, or even less. Truly, it takes exceedingly strong resilience and determination to face the stutters and slowdowns bound to occur when the system starts running low on free VRAM. Carnage erupts inside the kernel driver as every application fights for as much GPU memory as it can hold on to. Any game caught up in this battle for resources will surely not leave unscathed. That is, until now. Because I fixed it. ↫ Natalie Vock The solution is to use cgroups to control the kernel's memory eviction policies, so that applications that should get priority when it comes to VRAM allocation - like games - don't get their memory evicted from VRAM to system RAM. Basically, evict everything else from VRAM before touching the protected application. This way, something like a game will have much more consistent access to more VRAM, thereby reducing needless memory evictions that harm performance. It's a clever solution that makes use of a ton of existing Linux tools, meaning it's also much easier to upstream, implement, and support. Excellent work.

10 Apr 2026 1:26pm GMT

You might have seen this, one of the strangest and most primitive experiences in macOS, where you're asked to press keys next to left Shift and right Shift, whatever they might be. Perhaps I can explain. ↫ Marcin Wichary It seems pretty obvious to me that's what it was for, but I guess many normal, regular people have never seen anything but one particular keyboard configuration (ANSI for Americans, ISO for some Europeans, etc.) keyboards. Perhaps they don't realise that not only are there ANSI keyboards with other layouts, but also entirely different keyboard configurations (mainly ISO and JIS). Interestingly, my home country of The Netherlands uses a US English layout on an ANSI configuration, but of course, it's the US International variant, either with deadkeys or using AltGr for the various accented/special characters we use. In my current country of residence, Sweden, they use this utterly wild and incomprehensible ISO layout where Shift unlocks characters on the bottom of keys, while AltGr unlocks characters at the top, the exact opposite of literally every other keyboard I've ever used (US Int'l, classic Dutch (no longer used), German, French, etc.). It's utterly bizarre, but entirely normal to my Swedish wife. We cannot use each other's keyboards.

09 Apr 2026 11:06pm GMT

This post aims to be a high level introduction to using USB for people who may not have worked with Hardware too much yet and just want to use the technology. There are amazing resources out there such as USB in a NutShell that go into a lot of detail about how USB precisely works (check them out if you want more information), they are however not really approachable for somebody who has never worked with USB before and doesn't have a certain background in Hardware. You don't need to be an Embedded Systems Engineer to use USB the same way you don't need to be a Network Specialist to use Sockets and the Internet. ↫ Nik "WerWolv" A bit of a generic title, but the article details how to write a USB driver.

09 Apr 2026 10:49pm GMT

The months keep coming, and thus, the monthly progress reports keep coming, too, for Redox, the new general purpose operating system written in Rust. This past month, there's been considerable graphics improvements, better deadlock detection in the kernel, improved Unicode support thanks to switching over to ncurses library variant with Unicode support, and much more. Alongside these, you'll find the usual long list of kernel, driver, and relibc changes, bugfixes, and improvements. This month also covered three topics we've already discussed individually: Redox' new no-"AI" code policy, capability-based security in Redox, and the brand-new CPU scheduler.

09 Apr 2026 10:44pm GMT

Since its launch in 2007, the Wii has seen several operating systems ported to it: Linux, NetBSD, and most-recently, Windows NT. Today, Mac OS X joins that list. In this post, I'll share how I ported the first version of Mac OS X, 10.0 Cheetah, to the Nintendo Wii. If you're not an operating systems expert or low-level engineer, you're in good company; this project was all about learning and navigating countless "unknown unknowns". Join me as we explore the Wii's hardware, bootloader development, kernel patching, and writing drivers - and give the PowerPC versions of Mac OS X a new life on the Nintendo Wii. ↫ Bryan Keller And all of this, because someone on Reddit said it couldn't be done. It won't surprise you to learn that the work required was extensive, from writing a custom bootloader to digging through the XNU source code, applying binary patches to the kernel during the boot process, building a device tree, writing the necessary drivers, and so much more. Even just setting up a development environment was a pretty serious undertaking. Especially writing the drivers posed an interesting and unique challenge, as the Wii doesn't use PCI to connect and expose its hardware components. Instead, components are connected to a dedicated SoC with its own ARM processor that talks to the main Wii PowerPC processor, exposing hardware that way. This meant that Keller had to write a driver for this chip first, before moving on to the device drivers for devices connected to this ARM SoC - graphics drivers, input drivers, and so on. After a ton more work and overcoming several complex roadblocks, we now have Mac OS X 10.0 Cheetah on the Nintendo Wii. Amazing.

08 Apr 2026 9:10pm GMT

From 2024, but still accurate and interesting: Plan 9 is unique in this sense that everything the system needs is covered by the base install. This includes the compilers, graphical environment, window manager, text editors, ssh client, torrent client, web server, and the list goes on. Nearly everything a user can do with the system is available right from the get go. ↫ moody This is definitely something that sets Plan 9 apart from everything else, but as moody - 9front developer - notes, this also has a downside in that development isn't as fast, and Plan 9 variants of tools lack features upstream has for a long time. He further adds that he think this is why Plan 9 has remained mostly a hobbyist curiosity, but I'm not entirely sure that's the main reason. The cold and harsh truth is that Plan 9 is really weird, and while that weirdness is a huge part of its appeal and I hope it never loses it, it also means learning Plan 9 is really hard. I firmly believe Plan 9 has the potential to attract more users, but to get there, it's going to need an onboarding process that's more approachable than reading 9front's frequently questioned answers, excellent though they are. After installing 9front and loading it up for the first time, you basically hit a brick wall that's going to be rough to climb. It would be amazing if 9front could somehow add some climbing tools for first-time users, without actually giving up on its uniqueness. Sometimes, Plan 9 feels more like an experimental art project instead of the capable operating system that it is, and I feel like that chases people away. Which is a real shame.

07 Apr 2026 2:01pm GMT

Anos is a modern, opinionated, non-POSIX operating system (just a hobby, won't be big and professional like GNU-Linux) for x86_64 PCs and RISC-V machines. Anos currently comprises the STAGE3 microkernel, SYSTEM user-mode supervisor, and a base set of servers implementing the base of the operating system. There is a (WIP) toolchain for Anos based on Binutils, GCC (16-experimental) and Newlib (with a custom libgloss). ↫ Anos GitHub page It's written in C, runs on both x86-64 and RISC-V, and can run on real hardware too (but this hasn't been tested on RISC-V just yet). For the x86 side of things, it's strictly 64 bit, and requires a Haswell (4th Gen) chip or higher.

07 Apr 2026 1:33pm GMT