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Foss Force

AI Pushes Cal.com to Shutter Open and Go Nonfree

Cal.com blames AI-powered vulnerability hunting for its move from open source to locked-down code β€” and tosses a crippled β€˜community’ edition to keep its cred. The post AI Pushes Cal.com to Shutter Open and Go Nonfree appeared first on FOSS Force.

LWN.net

[$] A more efficient implementation of Shor's algorithm

Shor's algorithm is the main practical example of an algorithm that runs more quickly on a quantum computer than a classical computer β€” at least in theory. Shor's algorithm allows large numbers to be factored into their component prime factors quickly. In reality, existing quantum computers do not have nearly enough memory to factor interesting numbers using Shor's algorithm, despite decades of research. A new paper provides a major step in that direction, however. While still impractical on today's quantum computers, the recent discovery cuts the amount of memory needed to attack 256-bit elliptic-curve cryptography by a factor of 20. More interesting, however, is that the researchers chose to publish a zero-knowledge proof demonstrating that they know a quantum circuit that shows these improvements, rather than publishing the actual knowledge of how to do it.

LWN.net

[$] The 7.0 scheduler regression that wasn't

One of the more significant changes in the 7.0 kernel release is to use the lazy-preemption mode by default in the CPU scheduler. The scheduler developers have wanted to reduce the number of preemption modes for years, and lazy preemption looks like a step toward that goal. But then there came this report from Salvatore Dipietro that lazy preemption caused a 50% performance regression on a PostgreSQL benchmark. Investigation showed that the situation is not actually so grave, but the episode highlights just how sensitive some workloads can be to configuration changes; there may be surprises in store for other users as well.

LWN.net

Security updates for Friday

Security updates have been issued by AlmaLinux (.NET 8.0, .NET 9.0, freerdp, libarchive, and thunderbird), Debian (chromium, openssh, and thunderbird), Fedora (aurorae, bluedevil, breeze-gtk, buildah, cockpit, extra-cmake-modules, flatpak-kcm, grub2-breeze-theme, kactivitymanagerd, kcm_wacomtablet, kde-cli-tools, kde-gtk-config, kdecoration, kdeplasma-addons, kf6, kf6-attica, kf6-baloo, kf6-bluez-qt, kf6-breeze-icons, kf6-frameworkintegration, kf6-kapidox, kf6-karchive, kf6-kauth, kf6-kbookmarks, kf6-kcalendarcore, kf6-kcmutils, kf6-kcodecs, kf6-kcolorscheme, kf6-kcompletion, kf6-kconfig, kf6-kconfigwidgets, kf6-kcontacts, kf6-kcoreaddons, kf6-kcrash, kf6-kdav, kf6-kdbusaddons, kf6-kdeclarative, kf6-kded, kf6-kdesu, kf6-kdnssd, kf6-kdoctools, kf6-kfilemetadata, kf6-kglobalaccel, kf6-kguiaddons, kf6-kholidays, kf6-ki18n, kf6-kiconthemes, kf6-kidletime, kf6-kimageformats, kf6-kio, kf6-kirigami, kf6-kitemmodels, kf6-kitemviews, kf6-kjobwidgets, kf6-knewstuff, kf6-knotifications, kf6-knoti

Phoronix

Intel Xe2 Lunar Lake Linux Graphics Performance Up ~17% Over Past Year

Given the Ubuntu 26.04 LTS release being imminent and also realizing it's been nearly one year to the day since reviewing the Lenovo ThinkPad X1 Carbon Gen 13 Aura Edition laptop under Linux, I ran some fresh benchmarks for seeing how the integrated Xe2 graphics have evolved on Linux over the past year.