1. Computers
  2. Display Drivers
  3. Graphics Cards
  4. Memory
  5. Motherboards
  6. Processors
  7. Software
  8. Storage
  9. Operating Systems


Facebook RSS Twitter Twitter Google Plus


Phoronix Test Suite

OpenBenchmarking.org

With KMS, Now Run Two X Servers Off One GPU

X.Org

Published on 17 March 2010 10:59 PM EDT
Written by Michael Larabel in X.Org
12 Comments

Over the past several weeks there have been a number of new Linux graphics features introduced by David Airlie, a Red Hat employee and long-time X.Org contributer. Last month David began on a project rampage by bringing hybrid graphics to Linux via code he called "vga_switcheroo" to switch between ATI/NVIDIA/Intel GPUs without rebooting the system (though restarting the X.Org Server is needed at this time) that that code has now made its way into the mainline Linux kernel. Last week another David Airlie project was multi-GPU rendering support for Linux that was written as a proof of concept to show a second GPU could render 3D applications onto the screen of the first GPU, regardless of the hardware vendor. This week we now have the ability to run two X.Org Servers for a multi-head setup off a single graphics card.

This code that allows two X.Org Servers to run off one graphics card is still very much a prototype like the multi-GPU rendering support, but it's working for David and patches are available. The patches go against libdrm and the Linux kernel and depend upon the graphics hardware driver using kernel mode-setting (KMS) for all of this to work out. In essence you can now easily have a two seat setup off one graphics card thanks to these DRM mapping changes and the introduction of render device nodes.

There's still a few items left on Airlie's to-do list for this feature and he's hoping someone else will pickup the work so he can move onto prototyping his next feature, but those interested can read about it on his blog.

About The Author
Michael Larabel is the principal author of Phoronix.com and founded the web-site in 2004 with a focus on enriching the Linux hardware experience and being the largest web-site devoted to Linux hardware reviews, particularly for products relevant to Linux gamers and enthusiasts but also commonly reviewing servers/workstations and embedded Linux devices. Michael has written more than 10,000 articles covering the state of Linux hardware support, Linux performance, graphics hardware drivers, and other topics. Michael is also the lead developer of the Phoronix Test Suite, Phoromatic, and OpenBenchmarking.org automated testing software. He can be followed via and or contacted via .
Latest Articles & Reviews
  1. Samsung 850 EVO SSD Linux Benchmarks
  2. Kubuntu 15.04 Is Turning Out Quite Nice, Good Way To Try Out The Latest KDE
  3. 5-Way Linux Distribution Comparison On The Core i3 NUC
  4. OCZ ARC 100 Linux SSD Benchmarks
  5. Lenovo ThinkPad X1 Carbon Works Great As A Linux Ultrabook
  6. Transcend SSD370 256GB
Latest Linux News
  1. AMD Will Release Mantle Programming Guide, API Reference This Month
  2. Unreal Engine Made Free By Epic Games
  3. Qt 5.5 Alpha Is Getting Close, But Still Behind Schedule
  4. OpenBSD Sponsors Work For Better Browser Security
  5. Improved ODF Reading Support Comes To KDE's Calligra
  6. Another Step Closer On The New Linux Benchmarking Test Farm
  7. Confirmed: Vulkan Is The Next-Gen Graphics API
  8. Kdenlive Ported To Qt5/KF5, Coming To KDE Applications 15.04
  9. HTC & Valve Partnered Up For The Steam VR Headset
  10. 8cc: A Small C11 Compiler
Most Viewed News This Week
  1. Screenshots Of The GNOME 3.16 Changes
  2. More Proof That Allwinner Is Violating The GPL
  3. The Tremendous Features Of Fedora 22
  4. Krita 2.9 Released, Their Biggest Release Ever
  5. A Single UEFI Executable With The Linux Kernel, Initrd & Command Line
  6. Linux 4.0 Doesn't Have The Weirdest Codename
  7. Canonical Comes Up With Its Own FUSE Filesystem For Linux Containers
  8. Firefox 36 Brings Full HTTP/2 Support
%%CLICK_URL_UNESC%%