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Google is enhancing Android 16's Linux Terminal app to support graphical Linux applications, so Android Authority decided to put it to the test by running Doom. From the report: The Terminal app first appeared in the Android 15 QPR2 beta as a developer option, and it still remains locked behind developer settings. Since its initial public release, Google pushed a few changes that fixed issues with the installation process and added a settings menu to resize the disk, forward ports, and backup the installation. However, the biggest changes the company has been working on, which include adding hardware acceleration support and a full graphical environment, have not been pushed to any public releases. Thankfully, since Google is working on this feature in the open, it's possible to simply compile a build of AOSP with these changes added in. This gives us the opportunity to trial upcoming features of the Android Linux Terminal app before a public release. To demonstrate, we fired up the Linux Terminal on a Pixel 9 Pro, tapped a new button on the top right to enter the Display activity, and then ran the 'weston' command to open up a graphical environment. (Weston is a reference implementation of a Wayland compositor, a modern display server protocol.) We also went ahead and enabled hardware acceleration beforehand as well as installed Chocolate Doom, a source port of Doom, to see if it would run. Doom did run, as you can see below. It ran well, which is no surprise considering Doom can run on literal potatoes. There wasn't any audio because an audio server isn't available yet, but audio support is something that Google is still working on.

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Facebook has banned posts mentioning Linux-related topics, with the popular Linux news and discussion site, DistroWatch, at the center of the controversy. Tom's Hardware reports: A post on the site claims, "Facebook's internal policy makers decided that Linux is malware and labeled groups associated with Linux as being 'cybersecurity threats.' We tried to post some blurb about distrowatch.com on Facebook and can confirm that it was barred with a message citing Community Standards. DistroWatch says that the Facebook ban took effect on January 19. Readers have reported difficulty posting links to the site on this social media platform. Moreover, some have told DistroWatch that their Facebook accounts have been locked or limited after sharing posts mentioning Linux topics. If you're wondering if there might be something specific to DistroWatch.com, something on the site that the owners/operators perhaps don't even know about, for example, then it seems pretty safe to rule out such a possibility. Reports show that "multiple groups associated with Linux and Linux discussions have either been shut down or had many of their posts removed." However, we tested a few other Facebook posts with mentions of Linux, and they didn't get blocked immediately. Copenhagen-hosted DistroWatch says it has tried to appeal against the Community Standards-triggered ban. However, they say that a Facebook representative said that Linux topics would remain on the cybersecurity filter. The DistroWatch writer subsequently got their Facebook account locked... DistroWatch points out the irony at play here: "Facebook runs much of its infrastructure on Linux and often posts job ads looking for Linux developers."

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Amid the ongoing Linux 6.14 kernel development cycle, Phoronix spotted a pull request for ACPI updates which "will allow for faster suspend and resume cycles on some systems." Wikipedia defines ACPI as "an open standard that operating systems can use to discover and configure computer hardware components" for things like power management and putting unused hardware components to sleep. Phoronix reports: The ACPI change worth highlighting for Linux 6.14 is switching from msleep() to usleep_range() within the acpi_os_sleep() call in the kernel. This reduces spurious sleep time due to timer inaccuracy. Linux ACPI/PM maintainer Rafael Wysocki of Intel who authored this change noted that it could "spectacularly" reduce the duration of system suspend and resume transitions on some systems... Rafael explained in the patch making the sleep change: "The extra delay added by msleep() to the sleep time value passed to it can be significant, roughly between 1.5 ns on systems with HZ = 1000 and as much as 15 ms on systems with HZ = 100, which is hardly acceptable, at least for small sleep time values." One 2022 bug report complained a Dell XPS 13 using Thunderbolt took "a full 8 seconds to suspend and a full 8 seconds to resume even though no physical devices are connected." In November an Intel engineer posted on the kernel mailing list that the fix gave a Dell XPS 13 a 42% improvement in kernel resume time (from 1943ms to 1127ms).

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Two computer scientists at the University of Waterloo in Canada believe changing 30 lines of code in Linux "could cut energy use at some data centers by up to 30 percent," according to the site Data Centre Dynamics. It's the code that processes packets of network traffic, and Linux "is the most widely used OS for data center servers," according to the article: The team tested their solution's effectiveness and submitted it to Linux for consideration, and the code was published this month as part of Linux's newest kernel, release version 6.13. "All these big companies — Amazon, Google, Meta — use Linux in some capacity, but they're very picky about how they decide to use it," said Martin Karsten [professor of Computer Science in the Waterloo's Math Faculty]. "If they choose to 'switch on' our method in their data centers, it could save gigawatt hours of energy worldwide. Almost every single service request that happens on the Internet could be positively affected by this." The University of Waterloo is building a green computer server room as part of its new mathematics building, and Karsten believes sustainability research must be a priority for computer scientists. "We all have a part to play in building a greener future," he said. The Linux Foundation, which oversees the development of the Linux OS, is a founder member of the Green Software Foundation, an organization set up to look at ways of developing "green software" — code that reduces energy consumption. Karsten "teamed up with Joe Damato, distinguished engineer at Fastly" to develop the 30 lines of code, according to an announcement from the university. "The Linux kernel code addition developed by Karsten and Damato was based on research published in ACM SIGMETRICS Performance Evaluation Review" (by Karsten and grad student Peter Cai). Their paper "reviews the performance characteristics of network stack processing for communication-heavy server applications," devising an "indirect methodology" to "identify and quantify the direct and indirect costs of asynchronous hardware interrupt requests (IRQ) as a major source of overhead... "Based on these findings, a small modification of a vanilla Linux system is devised that improves the efficiency and performance of traditional kernel-based networking significantly, resulting in up to 45% increased throughput..."

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