Disabling Intel graphics security mitigations in GPU compute stacks for OpenCL and Level Zero can yield a performance boost of up to 20%, prompting Ubuntu's Canonical and Intel to disable these mitigations in future Ubuntu packages. Phoronix's Michael Larabel reports: Intel does allow building their GPU compute stack without these mitigations by using the "NEO_DISABLE_MITIGATIONS" build option and that is what Canonical is looking to set now for Ubuntu packages to avoid the significant performance impact. This work will likely all be addressed in time for Ubuntu 25.10. This NEO_DISABLE_MITIGATIONS option is just for compiling the Intel Compute Runtime stack and doesn't impact the Linux kernel security mitigations or else outside of Intel's "NEO" GPU compute stack. Both Intel and Canonical are in agreement with this move and it turns out that even Intel's GitHub binary packages for their Compute Runtime for OpenCL and Level Zero ship with the mitigations disabled due to the performance impact. This Ubuntu Launchpad bug report for the Intel Compute Runtime notes some of the key takeaways. There is also this PPA where Ubuntu developers are currently testing their Compute Runtime builds with NEO_DISABLE_MITIGATIONS enabled for disabling the mitigations.

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BrianFagioli writes: Ubuntu 25.10, known as Questing Quokka, is taking a big turn under the hood. Canonical has dropped support for the GNOME desktop running on Xorg. Starting with this release, the default Ubuntu session now uses Wayland only. Yes, folks, there's no longer an option to log into GNOME on Xorg.

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Longtime Slashdot reader RoccamOccam shares a blog post from the Trifecta Tech Foundation, a nonprofit organization that creates secure, open source building blocks for infrastructure software. The foundation is also the developer behind Sudo-rs. From the report: Ubuntu 25.10 is set to adopt sudo-rs by default. Sudo-rs is a memory-safe reimplementation of the widely-used sudo utility, written in the Rust programming language. This move is part of a broader effort by Canonical to improve the resilience and maintainability of core system components. [...] The decision to adopt sudo-rs is in line with Canonical's commitment to Carefully But Purposefully increase the resilience of critical system software, by adopting Rust. Rust is a programming language with strong memory safety guarantees that eliminates many of the vulnerabilities that have historically plagued traditional C-based software. Sudo-rs is part of the Trifecta Tech Foundation's Privilege Boundary initiative, which aims to handle privilege escalation with memory-safe alternatives.

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