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WSL9x is not Microsoft WSL, but a retro Windows 95 and 98 project that makes Linux run where nobody expected it.

Physicists have proposed a new kind of atomic clock based on a revived superradiant laser concept that could produce an extraordinarily stable signal with a linewidth around 100 microhertz, potentially the narrowest ever for an optical laser. "The implications of this result could stretch well beyond timekeeping," reports Phys.org. "A laser immune to environmental frequency shifts would be a powerful tool in optical interferometry -- using interference patterns in light to make ultra-precise measurements." From the report: In a conventional laser, a mirrored cavity bounces light back and forth between atoms, building up a bright, coherent beam. A superradiant laser works differently: rather than relying on the cavity to maintain coherence, the atoms themselves act as single coordinated emitters, collectively synchronizing their light emission. Following early theoretical ideas emerged in the 1990s, the concept didn't gain concrete traction until 2008, when researchers at the University of Colorado proposed that superradiant lasers could serve as a new kind of atomic clock. Atomic clocks work by using laser light to probe a very precise transition in an atom, causing electrons to transition between energy levels at an extraordinarily stable frequency. Because a superradiant laser stores its coherence in the atoms rather than the cavity, its output frequency is far less vulnerable to environmental disturbances like vibrations or temperature fluctuations. Yet although this concept was first demonstrated experimentally in 2012 in a pulsed regime, the influence of heating has so far held superradiant lasers back from their full potential. To keep the laser running continuously as an atomic clock requires, atoms must be constantly replenished with energy. Doing this atom-by-atom delivers random kicks that heat the atomic sample and disrupt the lasing process, confining it to brief pulses rather than a steady beam. In their study, Reilly's team considered whether a modification to earlier theoretical concepts could make a continuous laser suitable for an atomic clock. In almost all previous studies, atoms were treated as simple two-level systems: an electron sitting in a ground state, occasionally jumping up to an excited state and back again. The team proposed that the heating problem could be solved by adding one extra ground state to the picture. In a two-level system, if both the pumping (re-energizing) and decay processes happen collectively through the cavity, the mathematics constrains the system in a way that prevents stable, continuous lasing. But with three levels available, pumping and decay can operate on entirely separate transitions, breaking that constraint and allowing the collective approach to work. The findings have been published in the journal Physical Review Letters.

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Coming in cold with custom Snow malware

Coming in cold with custom Snow malware

A previously unknown threat group using tried-and-tested social engineering tactics - Microsoft Teams chat invitations and helpdesk staff impersonation - is also using custom malware in its data-stealing attacks, according to Google's Threat Intelligence Group.…

QEMU 11.0 open-source virtualization software is now available for download as a major update that introduces many new features and improvements for supported architectures. Here’s what’s new!

One way to deal with bug hunting LLMs: ditch the old driversOne tactic to deal with LLM-powered vulnerability detection is simple – just speed up the removal of old code. If it's gone, it no longer matters if it's buggy.…

An anonymous reader quotes a report from NPR: The Food and Drug Administration approved the first gene therapy to restore hearing for people who were born deaf. The decision, while only immediately affecting people born with a very rare form of genetic deafness, is being hailed as a milestone in the quest to treat hearing loss. "It's the first time in history there's a new drug for hearing loss," says Zheng-Yi Chen, an associate scientist at Mass Eye and Ear in Boston who was not involved in the development of the therapy approved by the FDA Thursday. But his research team reported very promising results with a similar approach Wednesday. "I think it's an historical event, a landmark, a great development for the whole field," he says of the approval. [...] The FDA's decision was based on the results from the treatment of 20 patients born with a defective version of a gene known as OTOF, which is necessary to transmit sound from the ears to the brain. Doctors infused billions of adeno-associated viruses into the patients' ears by making a small incision behind the ear to open a small hole in the skull. The viruses carried a healthy version of the OTOF gene that had been split in half to fit inside the virus. The gene provides instructions to make the otoferlin protein, which is necessary for hair cells in the inner ear to transmit sound to the brain. Most of the patients began to hear for the first time within weeks, with the quality of their hearing improving over the following months, according to [Regeneron Pharmaceuticals, which developed the gene therapy and plans to offer it for free in the U.S. It should be available within weeks.]. The amount of hearing patients gained varied, but 80% achieved at least some significant hearing restoration and 42% ended up with normal hearing, which included the ability to hear whispers, Regeneron says. The hearing ability has lasted at least two years so far. The treatment can only help patients with the very rare form of deafness that Smith was born with, which only affects about 50 children each year in the U.S. But similar gene therapies are showing promise for other forms of genetic deafness. And researchers hope someday gene therapy may help with common types of hearing loss, like from aging and loud noise.

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The 288th installment of the 9to5Linux Weekly Roundup is here for the week ending April 19th, 2026, keeping you updated on the most important developments in the Linux world.

Firefox 149 quietly adds Brave’s adblock-rust engine as an experimental content-blocking prototype, disabled by default and without filter lists.

With the Linux 7.1 merge window winding down ahead of the planned Linux 7.1-rc1 release on Sunday, I have begun testing out the Linux 7.1 Git state on various systems in my lab. So far Linux 7.1 appears to be looking good in the performance department with seeing a number of performance improvements in different areas but also a few possible regressions.

Fwupd developer Richard Hughes released fwupd 2.1.2 today as the latest stable version of this open-source project for updating and managing the firmware of various hardware on your Linux distribution.

Maine Gov. Janet Mills vetoed a bill that would have imposed the nation's first statewide moratorium on new data centers, saying she supported the idea in principle but would not block a major redevelopment project tied to jobs and local investment. Instead, she said she will create a council to study data centers' effects while also signing a separate measure to deny them certain state tax incentives. Politico reports: "After prior redevelopment efforts failed, the Town of Jay worked for two years on a $550 million data center redevelopment project to finally bring jobs and investment back to the mill site," Mills wrote, adding that she would issue an executive order establishing a council to examine the impact of data centers in Maine. The legislation would have made Maine the first state to block the construction of new data centers, as both political parties grapple with how voters view them ahead of the midterm elections. In a statement accompanying the letter, the governor said she had signed a separate bill that would prohibit data center projects from receiving Maine's business development tax incentive programs

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Linus Torvalds did it! He merged the pull request to rid the Linux kernel of the old Integrated Services Digital Network (ISDN) subsystem and various other old network drivers largely for PCMCIA era network adapters. This was the code suggested for removal given the recent influx of AI/LLM-generated bug reports against this dated code that likely has no active upstream users remaining...

New LTS is here, with more tooling for GPGPU and AI workloadsUbuntu 26.04 "Resolute Raccoon," the latest LTS release from Canonical, arrives with GNOME 50, Linux kernel 7.0, and drops the Xorg option from Ubuntu Desktop while still running X11 applications through Xwayland.…

BMW's latest concept car moves the color-changing tech it debuted back at CES 2022 closer to reality by embedding an E Ink panel directly into the hood. The Verge reports: BMW's previous concepts wrapped the entire vehicle in a patchwork of E Ink panels that were all custom-sized and shaped to match its contours. It was an approach that wasn't practical for mass production, and one that wasn't very durable. The new BMW iX3 Flow Edition is potentially the most exciting of all of BMW's concepts as it embeds the E Ink Prism technology directly into the structure of the vehicle's hood panel, instead of just slapping it on top. The new approach has "undergone BMW's stringent quality testing" so that it meets the "requirements of automotive engineering and everyday use," according to a release from E Ink. The BMW iX3 Flow Edition's color-changing capabilities are limited to its hood with eight different animations (which appear restricted to a grayscale palette) that can be changed by the driver at the push of a button. It's not exactly the color-changing car that BMW has been teasing for years and you still can't buy one, but by focusing on making this technology more practical and functional these vehicles are one step closer to moving past the concept phase.

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A report says Samsung's mobile division could post its first-ever annual loss in 2026, as rising memory costs, tougher competition, and pressure across products like foldables and smartwatches weigh on the business. SammyGuru reports: Samsung boss TM Roh reportedly told company leaders that the mobile (MX) business could lose money this year. That warning has clearly rattled management. The MX unit has long been a key pillar for Samsung. That's why the idea of it slipping into the red is a serious concern for the company's overall performance. If this prediction holds, it would mark the first time the MX business reports a yearly loss since its inception. That's a sharp turn from its track record so far. It also raises bigger questions about future growth, rising competition, and how Samsung plans to steady the ship in its mobile division. And it's not like the challenges are easing up. Samsung's foldable market share in the US, where it currently enjoys a dominant position, doesn't look as solid as before, and Apple could shake things up if it enters the segment. On top of that, market reports suggest Samsung's overall smartwatch share could dip in 2026. The Galaxy S26 series seems to be selling well for now, but whether that's enough to move the needle is still up in the air.

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Now available in preview, DeepSeek V4 cuts inference costs to a fraction of R1

Chinese AI darling DeepSeek is back with a new open weights large language model that promises performance to rival the best proprietary American LLMs. Perhaps more importantly, it claims to dramatically reduce inference costs and it extends support for Huawei's Ascend family of AI accelerators.…

Longtime Slashdot reader Himmy32 writes: Socket Security published an article on the compromise of the Bitwarden CLI client, which was pushed from Bitwarden's client repository. This breach was the next in a chain of supply-chain attacks that have affected Checkmarx KICS and Aqua Security's Trivy scanners. The breach was quickly detected and reported by JFrog on the GitHub repository; JFrog also provided a technical write-up. The Bitwarden team has released statements on a blog post indicating that the compromise did not affect vault or customer data. Only 334 downloads of the affected CLI client were downloaded before removal and remediation.

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Google plans to invest up to $40 billion more in Anthropic, starting with $10 billion now and another $30 billion tied to performance milestones. CNBC reports: Anthropic said the agreement expands on a longstanding partnership between the two companies. Earlier this month, Anthropic secured 5 gigawatts worth of computing capacity as part of an announcement with Google and Broadcom that will start to come online next year. Anthropic could decide to add additional gigawatts of compute in the future. [...] The relationship between the two companies (Google and Anthropic) dates back to 2023, when Google invested $300 million in the AI lab for a stake of about 10%. Months later, Google poured in another $2 billion. Ahead of Friday's announcement, Google's investment in Anthropic exceeded $3 billion, and it reportedly owned a 14% stake in the company. Now, the leading tech companies are investing tens of billions of dollars in the frontier AI labs -- OpenAI and Anthropic -- in funding rounds that far exceed any prior investments in startups. Much of that investment will return in the form of revenue.

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South Korean police arrested a man accused of spreading an AI-generated image of an escaped wolf, after the fake photo reportedly misled authorities and disrupted the real search operation. The BBC reports: South Korean police have arrested a man for sharing an AI-generated image that misled authorities who were searching for a wolf that had broken out of a zoo in Daejeon city. The 40-year-old unnamed man is accused of disrupting the search by creating and distributing a fake photo purporting to show Neukgu, the wolf, trotting down a road intersection. The photo, circulated hours after Neukgu went missing on April 8, prompted authorities to urgently relocate their search operation, sending them on a wild wolf chase. The hunt for two-year-old Neukgu gripped the nation before he was finally caught near an expressway last week, nine days after his escape. The AI-generated image of Neukgu had prompted Daejeon city government to issue an emergency text to residents, warning them of a wolf near the intersection. Authorities also presented the AI image during a press briefing on the runaway wolf, local media reported. The police identified the man as a suspect after reviewing security camera footage and his AI program usage records. Authorities did not specify if the man had intentionally sent the photo to authorities during their search or simply shared it online. When questioned by the police, the man said he had done it "for fun," local media reported. Authorities are investigating him for disrupting government work by deception, an offence that carries up to five years in prison or a maximum fine of 10 million Korean won ($6,700).

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