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 Articles & Reviews
  1. Ubuntu vs. Fedora Linux On Lenovo's X1 Carbon With Core i7 Broadwell
  2. Ubuntu 15.04 Is The Easy Path To Better Performance On Intel Broadwell
  3. NVIDIA's Latest Maxwell Line-Up Against AMD With Catalyst On Linux
  4. Preliminary Tests Of Intel Sandy Bridge & Ivy Bridge vs. Broadwell
  5. AMD FX-8320E Performance On Linux
  6. Linux Compiler Benchmarks Of LLVM Clang 3.5 vs. LLVM Clang 3.6-rc1
Latest Linux News
  1. DNF Plugins Extend The Functionality Of Fedora's Yum Successor
  2. LibreOffice 4.4 Released With Better OOXML Support, UI Improvements
  3. Inkscape 0.91 Goes Through C++ Code Conversion, New Cairo Rendering, OpenMP Filters
  4. New Mesa Patch To Improve CPU-Bound Applications
  5. LLVM Adds Options To Do Fuzz Testing
  6. Coreboot Now Supports Another Dual-Socket AMD Motherboard
  7. Atomic Mode-Setting/Display Support Progresses In Linux 3.20
  8. NVIDIA 340.76 Brings Three Stable Fixes
  9. Intel Broadwell-U P-State vs. ACPI CPUFreq Scaling Linux Performance
  10. DragonFlyBSD Is Almost To Linux 3.10 Era Intel Graphics Support
Most Viewed News This Week
  1. PlayStation 4 System Compiler Support Landing In LLVM
  2. LibreOffice 4.4 Is Coming Soon With New Features
  3. Linux "GHOST" Vulnerability Hits Glibc Systems
  4. My Initial Intel Broadwell Linux Experience With The ThinkPad X1 Carbon
  5. Broadwell Linux Ultrabook Running MUCH Cooler Than Haswell
  6. LZHAM 1.0 Lossless Data Compression Codec Released
  7. Linux Users Upset By Chromium's Busted HiDPI Support
  8. Interstellar Marines On Linux With Catalyst: Bull S*#@