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

Linux 3.13 To Enable Radeon DPM, HDMI Audio

AMD

Published on 02 November 2013 12:53 AM EDT
Written by Michael Larabel in AMD
17 Comments

AMD has made known the changes they have lined up for the Linux 3.13 kernel merge window. Among the work includes finally enabling Radeon Dynamic Power Management (DPM) for some graphics processors and also restoring HDMI audio support to be enabled by default.

The initial pull request changes to be merged for the Linux 3.13 kernel that affect the Radeon DRM graphics driver include enabling Dynamic Power Management for some ASICs by default, HDMI audio by default, dynamically powering down discrete GPUs on PowerXpress systems, and shipping a lot of bug-fixes.

Radeon DPM appeared in the Linux 3.11 kernel to save power and boost performance for some GPUs but was disabled by default. Dynamic Power Management was further improved in the 3.11 and 3.12 kernel cycles. Now with 3.13, it will be enabled by default. DPM is to be enabled by default for Radeon HD 4000 through Radeon HD 7000 series graphics processors but with some specific ASICs being excluded. See this article for details on the many Radeon DPM improvements.

The other nice power change for Radeon owners with the Linux 3.13 kernel is support for dynamically powering on/off discrete GPUs as part of ATI/AMD PowerXpress systems.

The Radeon HDMI audio support by default comes after the support has long been available but has been turned off since for a small number of users it caused adverse problems. The Radeon HDMI audio problems now appear to be worked out so with Linux 3.13 they will attempt to turn it on for all users.

More details on the Radeon changes queued up for Linux 3.13 can be found on the dri-devel mailing list.

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. Trying The Configurable 45 Watt TDP With AMD's A10-7800 / A6-7400K
  2. Sumo's Omni Gets Reloaded
  3. AMD A10-7800 & A6-7400K APUs Run Great On Linux
  4. Radeon Gallium3D Is Running Increasingly Well Against AMD's Catalyst Driver
Latest Linux Articles
  1. Intel's Latest Linux Graphics Code Competes Against OS X 10.9
  2. Intel Sandy Bridge Gets A Surprise Boost From Linux 3.17
  3. Open-Source Radeon Graphics Have Some Improvements On Linux 3.17
  4. CPUFreq Scaling Tests With AMD's Kaveri On Linux 3.16
Latest Linux News
  1. Steam Now Supports VA-API For In-Home Game Streaming
  2. GNOME 3.14 Beta Released
  3. Mesa 10.3 Branched & RC1 Released, Mesa 10.4 On Master
  4. Intel Sandy Bridge Gains On Linux 3.17 Extend Beyond Graphics
  5. LinuxCon: What's Going On With Fedora.Next
  6. Canonical Joined The Khronos Group To Help Mir/Wayland Drivers
  7. EFL 1.11 Is A Big Milestone For Enlightenment Users
  8. DirectFB Updates GTK3 Support, Working Towards DirectFB 1.8
  9. Userptr Support Set For AMD Radeon GPUs In Linux 3.18
  10. NVIDIA Releases CUDA 6.5 As A Huge Update
Latest Forum Discussions
  1. Systemd 216 Piles On More Features, Aims For New User-Space VT
  2. American Citizens running AMOK for food stamps
  3. What Linux Distribution Should Be Benchmarked The Most?
  4. Microsoft vs. Campaign
  5. Btrfs Gets Talked Up, Googler Encourages You To Try Btrfs
  6. OSS radeon driver for A10-7850K (Kaveri)
  7. Updated and Optimized Ubuntu Free Graphics Drivers
  8. AMD Offers Mantle For OpenGL-Next, Pushes Mantle To Workstations