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Graphics: AMD, Vulkan and ARM

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Graphics/Benchmarks
  • Linux 4.20 Picks Up 6 x 4K Display Support For Vega 20, Initial RX 590 Support Fixes

    Usually this late into a current Linux kernel development cycle the DRM graphics driver fixes don't tend to be too notable, but that's certainly not the case with today's batch of AMDGPU and TTM fixes sent off to the DRM tree.

    Highlights of the AMDGPU Linux kernel driver fixes today come down to:

    - Support for being able to drive six 4K displays with the upcoming Vega 20 GPUs... Up until now Vega 20 would top out at 4 x 4K displays due to the minimum dcf clock value set, but now that's been corrected with a one line patch that will allow up to six 4K displays to function with the upcoming Radeon Instinct Vega 20 products.

  • VK_KHR_shader_float_controls and Mesa support

    Khronos Group has published two new extensions for Vulkan: VK_KHR_shader_float16_int8 and VK_KHR_shader_float_controls. In this post, I will talk about VK_KHR_shader_float_controls, which is the extension I have been implementing on Anvil driver, the open-source Intel Vulkan driver, as part of my job at Igalia. For information about VK_KHR_shader_float16_int8 and its implementation in Mesa, you can read Iago’s blogpost.

    The Vulkan Working Group has defined a new extension VK_KHR_shader_float_controls, which allows applications to query and override the implementation’s default floating point behavior for rounding modes, denormals, signed zero and infinity. From the Vulkan application developer perspective, VK_shader_float_controls defines a new structure called VkPhysicalDeviceFloatControlsPropertiesKHR where the drivers expose the supported capabilities such as the rounding modes for each floating point data type, how the denormals are expected to be handled by the hardware (either flush to zero or preserve their bits) and if the value is a signed zero, infinity and NaN, whether it will preserve their bits.

  • ARM Posts New "Komeda" Linux DRM/KMS Display Driver

    ARM developers have posted their first public patches for the new "Komeda" display driver for the Linux kernel that offers DRM/KMS integration.

    ARM's Komeda display driver is for supporting the D71 and later display processors. The Mali D71 is a big redesign to ARM's display IP that is more modularized and offers new functionality compared to their older display processors. Those unfamiliar with the D71 hardware and features but curious can learn more via community.arm.com.

More in Tux Machines

Ubuntu-Centric Full Circle Magazine and Debian on the Raspberryscape

  • Full Circle Magazine: Full Circle Weekly News #121
  • Debian on the Raspberryscape: Great news!
    I already mentioned here having adopted and updated the Raspberry Pi 3 Debian Buster Unofficial Preview image generation project. As you might know, the hardware differences between the three families are quite deep ? The original Raspberry Pi (models A and B), as well as the Zero and Zero W, are ARMv6 (which, in Debian-speak, belong to the armel architecture, a.k.a. EABI / Embedded ABI). Raspberry Pi 2 is an ARMv7 (so, we call it armhf or ARM hard-float, as it does support floating point instructions). Finally, the Raspberry Pi 3 is an ARMv8-A (in Debian it corresponds to the ARM64 architecture). [...] As for the little guy, the Zero that sits atop them, I only have to upload a new version of raspberry3-firmware built also for armel. I will add to it the needed devicetree files. I have to check with the release-team members if it would be possible to rename the package to simply raspberry-firmware (as it's no longer v3-specific). Why is this relevant? Well, the Raspberry Pi is by far the most popular ARM machine ever. It is a board people love playing with. It is the base for many, many, many projects. And now, finally, it can run with straight Debian! And, of course, if you don't trust me providing clean images, you can prepare them by yourself, trusting the same distribution you have come to trust and love over the years.

OSS: SVT-AV1, LibreOffice, FSF and Software Freedom Conservancy

  • SVT-AV1 Already Seeing Nice Performance Improvements Since Open-Sourcing
    It was just a few weeks ago that Intel open-sourced the SVT-AV1 project as a CPU-based AV1 video encoder. In the short time since publishing it, there's already been some significant performance improvements.  Since the start of the month, SVT-AV1 has added multi-threaded CDEF search, more AVX optimizations, and other improvements to this fast evolving AV1 encoder. With having updated the test profile against the latest state as of today, here's a quick look at the performance of this Intel open-source AV1 video encoder.
  • Find a LibreOffice community member near you!
    Hundreds of people around the world contribute to each new version of LibreOffice, and we’ve interviewed many of them on this blog. Now we’ve collected them together on a map (thanks to OpenStreetMap), so you can see who’s near you, and find out more!
  • What I learned during my internship with the FSF tech team
    Hello everyone, I am Hrishikesh, and this is my follow-up blog post concluding my experiences and the work I did during my 3.5 month remote internship with the FSF. During my internship, I worked with the tech team to research and propose replacements for their network monitoring infrastructure. A few things did not go quite as planned, but a lot of good things that I did not plan happened along the way. For example, I planned to work on GNU LibreJS, but never could find enough time for it. On the other hand, I gained a lot of system administration experience by reading IRC conversations, and by working on my project. I even got to have a brief conversation with RMS! My mentors, Ian, Andrew, and Ruben, were extremely helpful and understanding throughout my internship. As someone who previously had not worked with a team, I learned a lot about teamwork. Aside from IRC, we interacted weekly in a conference call via phone, and used the FSF's Etherpad instance for live collaborative editing, to take notes. The first two months were mostly spent studying the FSF's existing Nagios- and Munin-based monitoring and alert system, to understand how it works. The tech team provided two VMs for experimenting with Prometheus and Nagios, which I used throughout the internship. During this time, I also spent a lot of time reading about licenses, and other posts about free software published by the FSF.
  • We're Hiring: Techie Bookkeeper
    Software Freedom Conservancy is looking for a new employee to help us with important work that supports our basic operations. Conservancy is a nonprofit charity that promotes and improves free and open source software projects. We are home to almost 50 projects, including Git, Inkscape, Etherpad, phpMyAdmin, and Selenium (to name a few). Conservancy is the home of Outreachy, an award winning diversity intiative, and we also work hard to improve software freedom generally. We are a small but dedicated staff, handling a very large number of financial transactions per year for us and our member projects.

Security: Back Doors Running Amok, Container Runtime Flaw Patched, Cisco Ships Exploit Inside Products

  • Here We Go Again: 127 Million Accounts Stolen From 8 More Websites
    Several days ago, a hacker put 617 million accounts from 16 different websites for sale on the dark web. Now, the same hacker is offering 127 million more records from another eight websites.
  • Hacker who stole 620 million records strikes again, stealing 127 million more
    A hacker who stole close to 620 million user records from 16 websites has stolen another 127 million records from eight more websites, TechCrunch has learned. The hacker, whose listing was the previously disclosed data for about $20,000 in bitcoin on a dark web marketplace, stole the data last year from several major sites — some that had already been disclosed, like more than 151 million records from MyFitnessPal and 25 million records from Animoto. But several other hacked sites on the marketplace listing didn’t know or hadn’t disclosed yet — such as 500px and Coffee Meets Bagel. The Register, which first reported the story, said the data included names, email addresses and scrambled passwords, and in some cases other login and account data — though no financial data was included.
  • Vendors Issue Patches for Linux Container Runtime Flaw Enabling Host Attacks
  • How did the Dirty COW exploit get shipped in software?
    An exploit code for Dirty COW was accidentally shipped by Cisco with product software. Learn how this code ended up in a software release and what this vulnerability can do.

10 Cool Software to Try from CORP Repo in Fedora

In this article, we will share 10 cool software projects to try in Fedora distribution. All the apps or tools covered here can be found in COPR repository. However, before we move any further, let’s briefly explain COPR. Read more