While the Maxwell-based GTX 900 series graphics cards are rumored to be launching in the weeks ahead, the GTX 750 Maxwell graphics cards on the open-source "Nouveau" Linux driver still need some more work before they'll play nicely when not using NVIDIA's proprietary Linux driver.
Roy Spliet has been one of the few open-source developers working to tackle re-clocking support for Nouveau so that this open-source, reverse-engineered NVIDIA Linux graphics driver can better perform. He's already published several sets of patches improving various bits of GPU re-clocking through this work that's being funded by the X.Org Foundation. Today he's published another patch series.
Roy Spliet is at it again with a new set of Nouveau DRM driver patches pertaining to re-clocking.
The Nouveau development community released the xf86-video-nouveau 1.0.11 driver update to kick off the start of September. While you wouldn't guess it from the version number, this driver update is actually very significant and introduces a lot of new functionality and other improvements.
If you are trying to re-clock your NVIDIA GPU with the Nouveau driver when using the Linux 3.17 kernel, there's an extra step involved, but still your mileage may vary and the re-clocking is still mostly for Kepler GPUs.
For those following my Linux driver tribulations with constantly trying out and benchmarking the latest Git code for the Intel, Radeon, and NVIDIA/Nouveau drivers, the Nouveau screen corruption problem noted earlier this week has been resolved.
This week I've been running a large open-source graphics card comparison using Mesa 10.3-devel and Linux 3.17 from Git. While the intentions were nice with featuring Intel/NVIDIA/AMD graphics, running several benchmarks of Steam / Source Engine games on Linux, and also measuring the power efficiency and thermal performance, the testing was cut short when it came to the Nouveau driver testing.
Users of some pre-Fermi NVIDIA graphics cards can be thankful to Roy Spliet for managing some re-clocking related improvements to the Nouveau driver.
Nouveau developer Martin Peres has published a set of ten Nouveau DRM patches working towards proper fan/power management support for NVIDIA's latest "Maxwell" GPUs.
Samuel Pitoiset continues making steady, great progress on his Google Summer of Code project as a student developer reverse-engineering and implementing NVIDIA hardware performance counters within the open-source Nouveau driver.
Being merged into the mainline kernel code-base for Linux 3.17 was the big DRM feature pull that included enhancements to the Intel and AMD Radeon graphics drivers (among the other smaller DRM/KMS drivers), but missing from action was the open-source NVIDIA driver. The Nouveau driver changes were delayed by some last-minute bug-hunting but now a separate pull request was issued to land the Nouveau driver updates for Linux 3.17.
In complementing the Nouveau vs. NVIDIA OpenGL benchmark results published earlier this week on Phoronix, here are the power consumption and performance-per-Watt metrics.
As a follow on from today's Nouveau vs. NVIDIA OpenGL driver benchmarking results that were published earlier today on Phoronix, in the comments an interesting video was pointed out of Grand Theft Auto IV using Direct3D 9.x natively under Linux.
Samuel Pitoiset has shared another blog post on his excellent work for reverse-engineering NVIDIA hardware performance counters and implementing the functionality within the open-source Nouveau driver.
Nouveau's NVC0 Gallium3D driver for supporting NVIDIA "Fermi" hardware and newer has picked up support for indirect drawing.
One of the biggest challenges with the Nouveau open-source graphics driver for NVIDIA graphics hardware in recent times has been with regard to GPU / video memory re-clocking. As a minor step forward, NVIDIA has contributed re-clocking patches for the GK20A graphics processor.
While two X.Org GSoC projects already failed this summer, student developer Samuel Pitoiset continues making great progress on his work for implementing performance counter support within the open-source Nouveau NVIDIA graphics driver.
The work by open-source student developer Samuel Pitoiset taking part again in Google's Summer of Code is continuing to show signs of progress. Pitoiset is the one that's been working towards an open-source version of NVIDIA's NVPerfKit with exposing NVIDIA's performance counters on Linux using the open-source Nouveau driver.
In trying to reduce tearing and match the behavior of the Intel and Radeon drivers, the Nouveau X.Org driver will now sync buffer-swaps to vblanks by default.
As part of the this year's Google Summer of Code, a returning Nouveau developer is working on open-source, reverse-engineered performance counters support for NVIDIA graphics hardware that's implemented within the Nouveau driver stack and exposed to user-space in a similar manner to NVIDIA's NvPerfKit.
One day after the open-source Nouveau X.Org driver gained support for GLAMOR acceleration and the NVIDIA "Maxwell" hardware, the latest addition to xf86-video-nouveau is enabling support for the X.Org PRESENT extension.
The Nouveau X.Org driver (xf86-video-nouveau) now has basic support for NVIDIA's newest Maxwell graphics processor. Related to that, there's also GLAMOR 2D acceleration support available within the Nouveau DDX.
The latest OpenGL 4 extension being enabled for the Nouveau "NVC0" Gallium3D driver is GL_ARB_viewport_array.
The X.Org Foundation has decided to fund an Endless Vacation of Code project to improve the support for the Nouveau driver's re-clocking of several generations of NVIDIA GPUs.
The open-source driver stack for NVIDIA's Tegra K1 SoC continues to go well and their Jetson TK1 ARM development board has reached the "kmscube" milestone.
Besides being able to try out re-clocking with Linux 3.16, there's also several other changes lined up for this next kernel release cycle when it comes to the Nouveau driver providing open-source NVIDIA graphics support.
The Nouveau DRM graphics driver for open-source NVIDIA support hasn't seen any fundamental re-clocking support breakthroughs for the upcoming Linux 3.16 kernel but the support can be easily enabled for select GeForce GPU models.
Besides Nouveau's 3D performance being very slow until re-clocking is figured out, the 2D performance of this open-source NVIDIA Linux graphics driver is also very slow.
In continuation of the story earlier today about NVIDIA contributing Mesa patches to add "GK20A" support to Nouveau's NVC0 Gallium3D driver, the support has now landed within mainline Mesa.
Last year Samuel Pitoiset took up a Google Summer of Code project for reverse-engineering NVIDIA's hardware performance counters on their GPUs so they could be supported by the Nouveau driver and exposed under Linux. After making much progress last year and sticking around the Nouveau camp after his summer term, Pitoiset is again working more on NVIDIA performance counters for Nouveau this year via another GSoC project.
246 Nouveau news articles published on Phoronix.