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New Hardware Support in Linux

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  • Nintendo Wii U Gamepad Linux Driver Support Still Pursuing Mainline - Phoronix

    It's been a half-year since talking about the Wii U gamepad driver that's been in development with mainline ambitions for supporting this wireless gamepad in conjunction with the Nintendo Wii U console. The driver has just been revised to address earlier code review comments, again renewing interest in the effort and possible mainlining in a future kernel version. 

    The Wii U game console is nearly one decade old for this IBM PowerPC powered device but still is active with some hobbyists for running Linux on the device and other retro gaming purposes. This gamepad Linux driver effort continues to be for those wanting to load Linux on the console and depends upon the wireless gamepad being connected to the console via the DRH internal chip to the Wii U that in turn exposes it as a USB device. There has though been some work towards potentially allowing it to work in the absence of the console. 

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  • Linux 5.16 To Support The 2021 Apple Magic Keyboard - Phoronix

    Separate from all the ongoing Apple Silicon/M1 bring-up work for the Linux kernel, the Linux 5.16 cycle is set to support this year's Apple Magic Keyboard. 

    Via the Apple-HID driver there has been Linux kernel support for earlier versions of the Magic Keyboard to deal with device quirks and differences around this keyboard that need to be specially handled by the software for making full use of the keyboard, such as for the function (Fn) keys. 

  • Apple Silicon PCIe Driver Queued For Linux 5.16 - Phoronix

    Queued this week into the Linux PCI subsystem's "next" branch is the Apple PCIe driver needed to enable PCI Express support for Apple SoCs such as the M1. 

    The "pcie-apple" driver is written by reverse-engineering expert Alyssa Rosenzweig and Marc Zyngier while also based on discoveries by Corellium and OpenBSD developers. At this stage the Apple PCIe controller driver is less than one thousand lines of new code for bringing up the PCI Express bus with Apple SoCs. The focus has been on the Apple M1 with last year's Apple devices. 

From Tom's Hardware

  • Upcoming Linux PCIe Driver To Fully Utilize M1 Mac Mini Ports

    Further development of Apple silicon drivers for Linux continues. According to a report from Phoronix, developers are almost ready to release a new PCIe driver for M1 chips that will bring PCIe compatibility to Apple chips running the Linux operating systems. That could bring us closer to a day where we can run Linux with full compatibility on Apple's new high-performance M1 chips.

    This new PCIe driver is one of the most important drivers to be developed for the Apple M1 and Linux ecosystem: The PCI express drivers will give Linux operating systems full access to all I/O including USB ports, networking, Thunderbolt, and wireless ports on a multitude of M1 products.

    Linux support for Apple's M1 has been underway for some time now; we first saw initial support with Linux Kernel 5.13, and a real demonstration of Linux running on an M1 Mac a few weeks ago. However, the process of getting Linux compatible with Apple's M1 chips has been challenging thanks to both the ARM architecture and loads of proprietary technologies packed inside Apple Silicon.

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More in Tux Machines

Audiocasts/Shows: Late Night Linux, Destination Linux, and More

Kernel: Slowdown, CephFS, and FS-Cache / CacheFiles

  • How a performance boost in Linux kernel for one family of Intel chips slowed its latest Alder Lake processors

    The mixture of performance and efficiency CPUs in Intel’s 12th-gen Core processors, code-named Alder Lake, hasn’t just been causing problems for some Windows gamers – it almost led to complications for Linux. Phoronix’s Michael Larabel noticed a performance hit in the kernel a fortnight ago – in a work-in-progress release candidate, we should stress – and a fix for the scheduling code landed a little later. It turned out the kernel suffered on Alder Lake chips due to a performance-enhancing tweak for another Intel processor family: the multiple-Atom-core-based Jacobsville. This year, Intel officially canned its Lakefield chips. These consisted of a performance core called Sunny Cove as well as Atom-class efficiency cores dubbed Tremont. Crucially, there are still multi-Tremont-core embedded processors out there, such as Snow Ridge. These are server and infrastructure-oriented components with up to 24 cores. The first proposed cut of kernel 5.16, specifically 5.16-rc1, contained a revision to the scheduler that makes it aware that some clusters of cores share a block of L2 cache – as seen in Snow Ridge and Jacobsville.

  • Testing the Linux Kernel CephFS Client with xfstests

    I do a lot of testing with the kernel cephfs client these days, and have had a number of people ask about how I test it. For now, I’ll gloss over the cluster setup since there are other tutorials for that.

  • Major Rewrite Of Linux's FS-Cache / CacheFiles So It's Smaller & Simpler - Phoronix

    As part of David Howells of Red Hat long-term work on improving the caching code used by network file-systems, he today posted a big patch series rewriting the fscache and cachefiles code as the latest significant step on that adventure. Howells posted a set of 64 patches for rewriting the kernel's fscache and cachefiles code. Linux's fsache is a general purpose cache used by network file-systems while cachefiles is for providing a caching back-end for mounted local file-systems. The Red Hat engineer has been working on this rewrite for more than the past year.

Ubuntu Weekly Newsletter and Ubuntu Desktop on Google Clown

  • Ubuntu Weekly Newsletter Issue 711

    Welcome to the Ubuntu Weekly Newsletter, Issue 711 for the week of November 21 – 27, 2021. The full version of this issue is available here.

  • Launch Ubuntu Desktop on Google Cloud

    This tutorial shows you how to set up a Ubuntu Desktop on Google Cloud. If you need a graphic interface to your virtual desktop on the cloud, this tutorial will teach you how to set up a desktop environment just like what you can get on your own computer.

Open Hardware/Modding: ESP32, 3-D Printing, Raspberry Pi Pico, PocketBeagle

  • Wireless thermal printer kit features M5Stack ATOM Lite controller - CNX Software

    This is certainly not the first ESP32 thermal printer solution, as there are various implementations including bitbank2 thermal printer Arduino connecting ESP32 and nRF52 boards to the printer over Bluetotoh LE, or a Arduino sketches to print bitmaps over serial or MQTT.

  • Generate Fully Parametric, 3D-Printable Speaker Enclosures | Hackaday

    Having the right speaker enclosure can make a big difference to sound quality, so it’s no surprise that customizable ones are a common project for those who treat sound seriously. In that vein, [zx82net]’s Universal Speaker Box aims to give one everything they need to craft the perfect enclosure.

  • Z80 Video Output Via The Raspberry Pi Pico | Hackaday

    Building basic computers from the ground up is a popular pastime in the hacker community. [Kevin] is one such enthusiast, and decided to whip up a video interface for his retro Z80 machine.

  • The Calculator Charm: Calculatorium Leviosa! | Hackaday

    Have you ever tried waving your hand around like a magic wand and summoning a calculator? We would guess not since you’d probably look a little silly doing so. That is unless you had [Andrei’s] cool gesture-controlled calculator. [Andrei] thought it would be helpful to use a calculator in his research lab without having to take his gloves off and the results are pretty cool. His hardware consists of a PocketBeagle, an OLED, and an MPU6050 inertial measurement unit for capturing his hand motions using an accelerometer and gyroscope. The hardware is pretty straightforward, so the beauty of this project lies in its machine learning implementation.