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

Nouveau Commits: Fermi Reclocking, PM, MXM, Etc

Nouveau

Published on 19 December 2011 09:09 AM EST
Written by Michael Larabel in Nouveau
3 Comments

Last week there were a number of commits to the Nouveau DRM kernel tree by Red Hat's Ben Skeggs, several of these commits bring interesting new features and support.

With the Linux 3.2 kernel reaching the end of its development and the merge window for the Linux 3.3 kernel opening in January, it's time for kernel developers to get ready.

The Nouveau kernel tree last week was updated by Ben Skeggs of Red Hat against v3.2-rc5 upstream and then he landed more than 100 Nouveau-related commits into this public tree. (The Nouveau/linux-2.6 Git log.) There's a lot of fixes and other maintenance work, but also a lot of interesting new features that should be making their way into Linux 3.3.

Here are some of the interesting commits that landed last week into the public Nouveau kernel driver tree.

- HDMI audio support for NVA3 through NVD0 chipsets (commit). This HDMI audio support is for graphics cards from the GeForce GT 240 through some GeForce 400/500 "Fermi" GPUs. NVD9 (newer low-end Fermi GPUs) HDMI audio support is still being hacked on.

- Nouveau fan-speed management. There's support for manipulating the fan speeds on most NVIDIA graphics cards of recent generations by writing values to a sysfs interface. The support, however, isn't dynamic by default due to concerns of the code going awry and potentially damaging the graphics card if overheating the GPU core or other problems. This support is for the NV40 (GeForce 6) series and newer (commit).

- NVD0 page-flipping support (commit). Earlier NVIDIA GPUs have already had Nouveau KMS page-flipping support. There's also many other NVD0-related commits that were pushed six days ago.

- Hotplug IRQ support (commit).

- There's several commits concerning NVIDIA MXM support, which is the mobile graphics module that NVIDIA uses for many notebooks.

- Memory type detection for several generations of NVIDIA GPUs (commit). Now the driver knows if the graphics card is using DDR1/DDR2/GDDR3/GDDR5/etc video memory.

- The feature I've personally been waiting on: initial NVC0 Fermi re-clocking support (commit). At long last for the GeForce 400/500 "Fermi" graphics cards (though not the newer NVDx parts) there is support for adjusting the engine clocks.

Plus there's plenty of other work going on. Stay tuned for the Linux 3.3 kernel DRM pull request in a few weeks.

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. MSI X99S SLI PLUS On Linux
  2. NVIDIA GeForce GTX 970 Offers Great Linux Performance
  3. CompuLab Intense-PC2: An Excellent, Fanless, Mini PC Powered By Intel's i7 Haswell
  4. From The Atom 330 To Haswell ULT: Intel Linux Performance Benchmarks
Latest Linux Articles
  1. RunAbove: A POWER8 Compute Cloud With Offerings Up To 176 Threads
  2. 6-Way Ubuntu 14.10 Linux Desktop Benchmarks
  3. Ubuntu 14.10 XMir System Compositor Benchmarks
  4. Btrfs RAID HDD Testing On Ubuntu Linux 14.10
Latest Linux News
  1. openSUSE Factory & Tumbleweed Are Merging
  2. More Fedora Delays: Fedora 21 Beta Slips
  3. Mono Brings C# To The Unreal Engine 4
  4. Coreboot Now Has Support For Intel Broadwell Hardware
  5. Enlightenment's EFL 1.12 Alpha Has Evas GL-DRM Engine, OpenGL ES 1.1 Support
  6. GTK+ Lands Experimental Backend For Mir Display Server
  7. Ubuntu 14.10 Officially Released
  8. Mesa 10.4 Might Re-Enable HyperZ For R600g/RadeonSI
  9. Intel GVT-g GPU Virtualization Moves Closer
  10. GTK+ 3.16 To Bring Several New Features
Latest Forum Discussions
  1. Updated and Optimized Ubuntu Free Graphics Drivers
  2. Ubuntu 16.04 Might Be The Distribution's Last 32-Bit Release
  3. Linux hacker compares Solaris kernel code:
  4. HOPE: The Ease Of Python With The Speed Of C++
  5. Advertisements On Phoronix
  6. Users/Developers Threatening Fork Of Debian GNU/Linux
  7. AMD Releases UVD Video Decode Support For R600 GPUs
  8. Proof that strlcpy is un-needed