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

AMD Radeon DRM Gets More Early DPM Fixes

AMD

Published on 08 July 2013 06:06 PM EDT
Written by Michael Larabel in AMD
4 Comments

AMD's Alex Deucher has sent in another Git pull request for the Radeon DRM code for the in-development Linux 3.11 kernel. As with the other secondary pulls, this code update is about bettering up the state of Radeon dynamic power management.

The long-awaited Radeon dynamic power management support is of much interest to Linux desktop users as can be judged by the flurry of comments and activity around the topic that's been happening within the Phoronix Forums. The Radeon DPM support is one of the major Linux 3.11 features.

While Linux 3.11-rc1 isn't even out yet, the Radeon DRM code has already been updated multiple times within the DRM tree. These updates have been to provide end-user fixes for the DPM support along with sysfs and debugfs support.

This afternoon another pull request was submitted by Alex Deucher. This time it has more fixes. The latest fixes include fixing certain programming on RV7XX GPUs, adding a helper for calculating vblank times and new DPM checks against vblank times for the various generations of AMD hardware.

These latest changes are about checking on the possibility of changing the memory clock frequency during the vblank time, in order to prevent artifacts from being rendered to the screen if changing the memory frequency while a scan out is occurring.

Once Linux 3.11-rc1 has been released, Phoronix testing will commence of this Radeon DPM support (and updated HD 7000 series tests) and by then hopefully any show-stopping bugs will be ironed out.

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 Linux Hardware Reviews
  1. Even With Re-Clocking, Nouveau Remains Behind NVIDIA's Proprietary Linux Driver
  2. The Power Consumption & Efficiency Of Open-Source GPU Drivers
  3. AMD R600g/RadeonSI Performance On Linux 3.16 With Mesa 10.3-devel
  4. Intel Pentium G3258 On Linux
Latest Linux Articles
  1. AMD Catalyst 14.6 Does Slightly Better With APITest OpenGL Tests
  2. Updated Source Engine Benchmarks On The Latest AMD/NVIDIA Linux Drivers
  3. Nouveau vs. Radeon vs. Intel Tests On Linux 3.16, Mesa 10.3-devel
  4. KVM Benchmarks On Ubuntu 14.10
Latest Linux News
  1. Fedora Assembles A Security Team
  2. AMD Launches The A10-7800, The 65 Watt Kaveri
  3. Builder: A New Development IDE Being Built For GNOME
  4. GDB 7.8 Betters Python Scripting, Adds Guile Support
  5. GNOME's GTK+ Is Still Striving For A Scene Graph, Canvas API
  6. Unreal Tournament Looks Great For Team Deathmatch
  7. LibreOffice 4.3 Released With Many Exciting Changes
  8. GNOME/GTK On Wayland Gains Focus At GUADEC
  9. GNOME Stakeholders Take Issue With Groupon Over their Gnome
  10. GStreamer VA-API Plug-In Update Adds New Features
Latest Forum Discussions
  1. Grand Theft Auto Running On Direct3D Natively On Linux Shows Gallium3D Potential
  2. AMD Publishes Open-Source Linux HSA Kernel Driver
  3. Linus Torvalds On GCC 4.9: Pure & Utter Crap
  4. Debian + radeonsi
  5. Open-source drivers on ATI R7 260X
  6. AMD Athlon 5350 APU On Linux
  7. Updated and Optimized Ubuntu Free Graphics Drivers
  8. List of Linux friendly Kickstarter projects