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 Benchmarking Platform
Phoromatic Test Orchestration

New, Generic X.Org KMS Driver Work

X.Org

Published on 30 September 2011 04:54 AM EDT
Written by Michael Larabel in X.Org
4 Comments

David Airlie has announced new work on the xf86-video-modesetting driver, which aims to be a generic X.Org (DDX) driver that will take advantage of the generic parts of the Linux KMS (kernel mode-setting) APIs so that any GPU should be supported.

While most hardware with kernel mode-setting support already has a matching X.Org driver that is KMS compliant or even still provides user-space mode-setting, this driver would be a simple, un-accelerated fall-back driver. It's similar to the VESA driver, but uses Linux KMS.

The features of the xf86-video-modesetting "restart" driver branch include ARGB cursor support, RandR 1.2 support, and dirty tracking ioctl support. What's changed from the original -modesetting work is that it drops all DRI2/EXA knowledge, uses the kernel dumb interface directly for buffer object creation and mapping, the mode-setting logic is derived from the Radeon driver, and probing is based upon the fbdev driver.

You can see David's email to dri-devel about this recent driver work.

While this driver is meant to be universal for hardware that has proper KMS support, there isn't any hardware acceleration. If you're looking for a universal X.Org driver with acceleration, and don't want to use the driver specifically targeted for your hardware, there is the Xorg state tracker (and now the XA state tracker too) for Gallium3D that relies upon KMS and then offers shader-based EXA/X-Video acceleration. There's also the recently announced Glamor work, which does have a generic driver for KMS environments while depending upon Mesa/EGL.

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. Sub-$20 802.11n USB WiFi Adapter That's Linux Friendly
  2. The Lenovo T450s Is Working Beautifully With Linux
  3. Linux 4.0 SSD EXT4 / Btrfs / XFS / F2FS Benchmarks
  4. Linux 4.0 Hard Drive Comparison With Six File-Systems
  5. Lenovo ThinkPad T450s Broadwell Preview
  6. How Open-Source Allowed Valve To Implement VULKAN Much Faster On The Source 2 Engine
Latest Linux News
  1. GCC 5.1 RC2 Arrives, GCC 5.1 Planned For Next Week
  2. F2FS For Linux 4.1 Has New Features & Fixes
  3. Phoronix Server Upgrade This Weekend: Dual Haswell Xeons, 96GB DDR4
  4. Google's Experimental QUIC Transport Protocol Is Showing Promise
  5. Red Hat Joins Khronos, The Group Behind OpenGL & Vulkan
  6. NetworkManager Drops WiMAX Support
  7. Wine 1.7.41 Works More On Kernel Job Objects, MSI Patches
  8. Linux 4.1 Has Improvements For The Multi-Queue Block Layer
  9. X.Org Looks To Have Six Summer Projects
  10. DragonFlyBSD Pulls In GCC 5 Compiler
Most Viewed News This Week
  1. Nouveau: NVIDIA's New Hardware Is "VERY Open-Source Unfriendly"
  2. Linux 4.0 Kernel Released
  3. Microsoft Announces An LLVM-Based Compiler For .NET
  4. Linux 4.1 Brings Many Potentially Risky x86/ASM Changes
  5. Encryption Support For EXT4
  6. VirtualBox 5.0 Beta 2 Released
  7. Mozilla Start Drafting Plans To Deprecate Insecure HTTP
  8. Elementary OS 0.3 "Freya" Now Available