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Linux Hardware Reviews & News
Updated: 3 min 14 sec ago

DragonFlyBSD Lands Fixes For Meltdown Vulnerability

Friday 5th of January 2018 06:44:38 PM
Linux, macOS, and Windows has taken most of the operating system attention when it comes down to the recently-disclosed Meltdown vulnerability but the BSDs too are prone to this CPU issue. DragonFlyBSD lead developer Matthew Dillon has landed his fixes for Meltdown...

Wine Takes Minor Performance Hit Running Windows Programs On Linux With KPTI

Friday 5th of January 2018 06:07:01 PM
With word this morning that Wine performance may be impacted by the Linux KPTI patches stealing the spotlight this week, I ran some basic benchmarks of Wine in different configurations looking at the performance impact of the kernel page table isolation patches.

NVIDIA Mainlining Tegra186 DRM Support For Linux 4.16

Friday 5th of January 2018 04:24:15 PM
Nearly one year after rolling out the Jetson TX2 developer board with the "Tegra186" SoC, the Tegra DRM driver in Linux 4.16 will finally be offering basic display support with this open-source driver...

Fedora 28 Taking To Modularizing Their Anaconda Installer

Friday 5th of January 2018 03:59:50 PM
When talking about the Fedora/RedHat Anaconda installer it still brings back bad memories from the Anaconda fallout a few years ago when they went through some painful transitions that also led to release delays. In 2018, Fedora/RedHat developers are taking up the initiative of modularizing the Anaconda installer...

Wine Performance May Be Impacted By Linux KPTI Patches

Friday 5th of January 2018 02:07:10 PM
Besides VM performance and databases and heavy I/O taking a performance hit in the "Kernel Page Table Isolation" patches in the wake of the Spectre and Meltdown attack, it looks like Wine's performance may also be impaired...

Red Hat's Latest Nouveau Developer Posts Updated NIR Code

Friday 5th of January 2018 12:37:53 PM
Not only is RadeonSI working on NIR support but Red Hat has begun working on NIR support for the open-source NVIDIA "Nouveau" driver as part of a compute effort and possible Vulkan support in the future...

AMD Posts Last KFD Kernel Patches For Discrete GPUs, Needed For Upstream ROCm

Friday 5th of January 2018 12:06:17 PM
AMD has posted their remaining patches for now for getting the discrete GPU support upstream in the AMDKFD "Kernel Fusion Driver" that is part of their ROCm compute stack...

Xilinx ZynqMP DisplayPort DRM/KMS Driver Posted

Friday 5th of January 2018 11:21:31 AM
Xilinx is interested in contributing the latest DRM/KMS driver upstream...

Tessellation Shaders Land For RadeonSI NIR Backend

Friday 5th of January 2018 11:11:18 AM
The work led by Valve Linux driver developer Timothy Arceri on adding tessellation shader support to RadeonSI's NIR code-path has been merged to Mesa 17.4-dev Git...

Valve Ships Its First SteamOS Brewmaster Beta Of 2018

Friday 5th of January 2018 10:49:25 AM
While SteamOS has felt like it's just been on life-support the past year, Valve is starting off 2018 by a fairly sizable SteamOS Brewmaster Beta update...

Linux KPTI Tests Using Linux 4.14 vs. 4.9 vs. 4.4

Friday 5th of January 2018 01:31:57 AM
Yet another one of the avenues we have been exploring with our Linux Page Table Isolation (KPTI) testing has been looking at any impact of this security feature in the wake of the Meltdown vulnerability when testing with an older Linux Long Term Support (LTS) release. In particular, when using a kernel prior to the PCID (Process Context Identifier) support in the Linux kernel that is used to lessen the impact of KPTI.

Solus Experimenting With Qt Wayland Compositor, NVIDIA EGLStreams Support

Thursday 4th of January 2018 08:29:47 PM
Solus taking a break from their Steam Linux integration improvements and their other open-source desktop innovations has been experimenting with their own Qt Wayland compositor over the holiday period...

RADV Supports Android Native Buffer, Increasing Likelihood Of Chrome/Android AMD Device

Thursday 4th of January 2018 08:00:04 PM
The open-source Mesa RADV Vulkan driver, RADV, now has patches for supporting VK_ANDROID_native_buffer...

NVIDIA Gaming Performance Minimally Impacted By KPTI Patches

Thursday 4th of January 2018 05:57:48 PM
Earlier this week when news was still emerging on the "Intel CPU bug" now known as Spectre and Meltdown I ran some Radeon gaming tests with the preliminary Linux kernel patches providing Kernel Page Table Isolation (KPTI) support. Contrary to the hysteria, the gaming performance was minimally impacted with those open-source Radeon driver tests while today are some tests using the latest NVIDIA driver paired with a KPTI-enabled kernel.

NVIDIA 390.12 Linux Driver Reaches Beta

Thursday 4th of January 2018 04:42:52 PM
NVIDIA has released their first beta driver in the long-awaited 390 series...

Fedora 28 To Work On Better VirtualBox Integration, Hardening Packages & Stronger Crypto

Thursday 4th of January 2018 04:00:00 PM
With more developers returning to their activities after the holidays, feature work on Fedora 28 is heating up...

Mesa 17.3.2 Being Prepped With Fixes For RADV Vulkan, Unreal Engine 4 Games

Thursday 4th of January 2018 02:57:46 PM
For those of you riding the Mesa 17.3 stable train, the second point release is expected for release this weekend with many fixes...

Dell Rolls Out New XPS 13 Laptop For 2018

Thursday 4th of January 2018 02:12:22 PM
Just ahead of the Consumer Electronics Show (CES) in Las Vegas, Dell has unveiled a new XPS 13 high-end laptop...

Broadcom's Open-Source VC5 OpenGL & Vulkan Support Improving

Thursday 4th of January 2018 01:20:49 PM
Broadcom open-source driver developer Eric Anholt has written his first status update on the VC5 driver activities of the new year...

ARM Preps ARMv8.4-A Support For GCC Compiler

Thursday 4th of January 2018 12:52:36 PM
ARM Holdings has submitted patches implementing support for the ARMv8.4-A instruction set update for the GNU Compiler Collection (GCC)...

More in Tux Machines

PlayOnLinux For Easier Use Of Wine

PlayOnLinux is a free program that helps to install, run, and manage Windows software on Linux. It can also manage virtual C: drives (known as Wine prefixes), and download and install certain Windows libraries for getting some software to run on Wine properly. Creating different drives using different Wine versions is also possible. It is very handy because what runs well in one version may not run as well (if at all) on a newer version. There is PlayOnMac for macOS and PlayOnBSD for FreeBSD. Read
more

Linux Kernel: KPTI, SEV, CBS

  • Experimental KPTI Support For x86 32-bit Linux
    For the Kernel Page Table Isolation (KPTI) support currently within the Linux kernel for addressing the Meltdown CPU vulnerability it's currently limited to 64-bit on the x86 side, but for the unfortunate souls still running x86 32-bit operating systems, SUSE is working on such support.
  • AMD Secure Encrypted Virtualization Is Ready To Roll With Linux 4.16
    With the Linux 4.16 kernel cycle that is expected to begin immediately following the Linux 4.15 kernel debut on Sunday, AMD's Secure Encrypted Virtualization (SEV) technology supported by their new EPYC processors will be mainline. Going back to the end of 2016 have been Linux patches for Secure Encrypted Virtualization while with Linux 4.16 it will finally be part of the mainline kernel and supported with KVM (Kernel-based Virtual Machine) virtualization.
  • Deadline scheduler part 2 — details and usage
    Linux’s deadline scheduler is a global early deadline first scheduler for sporadic tasks with constrained deadlines. These terms were defined in the first part of this series. In this installment, the details of the Linux deadline scheduler and how it can be used will be examined. The deadline scheduler prioritizes the tasks according to the task’s job deadline: the earliest absolute deadline first. For a system with M processors, the M earliest deadline jobs will be selected to run on the M processors. The Linux deadline scheduler also implements the constant bandwidth server (CBS) algorithm, which is a resource-reservation protocol. CBS is used to guarantee that each task will receive its full run time during every period. At every activation of a task, the CBS replenishes the task’s run time. As the job runs, it consumes that time; if the task runs out, it will be throttled and descheduled. In this case, the task will be able to run only after the next replenishment at the beginning of the next period. Therefore, CBS is used to both guarantee each task’s CPU time based on its timing requirements and to prevent a misbehaving task from running for more than its run time and causing problems to other jobs.

Graphics: Mesa and AMDGPU

  • Mesa 17.3.3 Released With RADV & ANV Vulkan Driver Fixes
    Mesa 17.3.3 is now available as the latest point release for the Mesa 17.3 stable series. This bi-weekly point release to Mesa presents several RADV Vega/GFX9 fixes, various Intel ANV Vulkan driver fixes, a DRI3 fix, and random fixes to the OpenGL drivers like RadeonSI, Etnaviv, and even Swrast.
  • R600g "Soft" FP64 Shows Signs Of Life, Enabling Older GPUs To Have OpenGL 4 In 2018
    Most pre-GCN AMD graphics cards are still limited to OpenGL 3.3 support at this time due to not supporting FP64. Only the HD 5800/6900 series on R600g currently have real double-precision floating-point support working right now so at present they are on OpenGL 4.3 rather than 3.3, but those other generations may be catching up soon thanks to the "soft" FP64 code.
  • AMDGPU DC Gets More Raven Ridge Improvements, Audio Fixes
    Harry Wentland of AMD has sent out the latest batch of patches for the AMDGPU DC display code stack. Fortunately it lightens up the DRM driver by about six thousand lines thanks to removing some unused code. Besides gutting out a chunk of unused code, the DC code has a few audio fixes (no word yet on supporting newer audio formats with DC), fixes on driver unload, a "bunch" of continued Raven Ridge display updates, and various other code clean-ups.
  • AMDGPU Firmware Blobs Updated For Video Encode/Decode
    There are updated AMDGPU microcode/firmware files now available for recent Radeon GPUs. The updated firmware files now available via the main linux-firmware.git repository are centered around the video blocks: UVD video decoding, VCE video encode, and the new VCN video encode/decode block with Raven Ridge.

Games: DRAG, Geneshift, Balloonatics and More