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LWN.net

[$] LWN.net Weekly Edition for August 13, 2026

Inside this week's LWN.net Weekly Edition: Front: BPF and binfmt_misc; CrossPoint ebook firmware; KVM planes; BPF formal verification; shadow-utils; new storage-code testing features. Briefs: Django releases; GNOME shell; LightDM 1.33.0; QEMU 11.1; uutils 0.10; Software Stewardship Lab; Quotes; ... Announcements: Newsletters, conferences, security updates, patches, and more.

LWN.net

[$] Block-layer error injection

Storage code has to cope with hardware that fails in inconvenient ways, but coaxing a healthy disk into producing those failures on demand, for testing, is usually not possible. The kernel provides several ways to inject block-layer I/O errors, but none of those can select the operation to fail, pick the status code to return, or target a disk directly without employing a stacked device on top. Use of a stacked device means the test runs against the mapper device, not the disk it was meant to exercise. A patch series from Christoph Hellwig adds a configurable error-injection interface that does all three things that the current error-injection code lacks, controlled by a per-disk debugfs file.

OMG! Ubuntu

LightDM returns from the dark with first release in 4 years

LightDM, Ubuntu’s former display manager, has had its first new release in four years – the first under new maintainers. LightDM v1.33.0 is a β€˜catch up’ release that adds Qt6 support (Qt5 still works) and clears a backlog of fixes that had built up since the previous release. There shouldn’t be any breaking changes either, per the release notes. LightDM is a backend that handles logging in to user sessions. A GUI β€˜greeter’ sits on top for user interaction. Ubuntu used the unity-greeter, but other distros and desktops roll their own. Linux Mint switched to LightDM in 2017 with slick-greeter […]

LWN.net

[$] A look at CrossPoint e-reader firmware

There are a number of small, inexpensive, low-powered e-reader or e-paper devices that have promise as ebook readers with one minor problem: the firmware they ship with does not realize their full potential. To solve that problem, the CrossPoint Reader project looks to provide replacement firmware that offers necessary features, better performance, and a more pleasant reading experience. On August 7, the project released version 1.5.0, which opens large EPUBs more quickly, provides offline dictionary lookups, and has reworked settings for changing layout and font options. The release also improves support for right-to-left text as well as Chinese, Japanese, and Korean (CJK) text rendering.

LWN.net

QEMU 11.1 released

Version 11.1 of the QEMU emulator has been released. The release contains more than 3,200 commits from 285 authors and includes a long list of improvements; see the announcement and changelog for the details.