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

GPU Lockup Recovery For The Nouveau Driver

Nouveau

Published on 23 April 2012 04:15 AM EDT
Written by Michael Larabel in Nouveau
Comment On This Article

An RFC patch-set was published this weekend for providing GPU lock-up recovery support within the Nouveau driver.

The work by Marcin Slusarz allows for detecting lock-ups by watching for time-outs (VM flush / fence), return -EIOs, handle them at the ioctl level, reset the GPU, and repeat last ioctl. The actual Nouveau GPU resetting is done by putting the NVIDIA graphics processor through its suspend / resume cycle but with CPU-only buffer object eviction, ignoring VM flush/fence time-outs, and shortening waits.

The patches can currently be found on the Nouveau mailing list under an "RFC" (Request For Comments) tag, but hopefully they will be able to move on into the mainline Nouveau kernel DRM in the near future. Depending upon the hardware, lock-ups can be a fairly common occurrence when using this open-source NVIDIA Linux graphics driver. This work comes at a time when the Nouveau driver is finally approaching a stable state after being in development for more than the past half-decade.

Over in the open-source Radeon GPU driver camp, they are currently discussing how to rework the GPU reset logic. Those discussions can be found on dri-devel. There's patches there that address multi-ring lock-ups and GPU resets plus overall improvements in case something goes badly wrong with the Radeon DRM driver. That work was done by AMD's Christian K├Ânig.

Meanwhile, the Intel DRM driver continues to recover GPU lock-ups gracefully. I've only hit a handful of lock-ups so far on Intel's about-to-be-launched Ivy Bridge hardware, but each time under Linux the graphics were quickly and properly restored.

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. Intel Launches The Core i7 5960X, Mighty Powerful Haswell-E CPUs
  2. AMD Radeon R9 290: Gallium3D vs. Catalyst Drivers
  3. AMD Radeon R9 290 Open-Source Driver Works, But Has A Ways To Go
  4. Trying The Configurable 45 Watt TDP With AMD's A10-7800 / A6-7400K
Latest Linux Articles
  1. Testing For The Latest Linux Kernel Power Regression
  2. The Most Energy Efficient Radeon GPU For AMD Linux Gaming
  3. 20-Way Radeon Comparison With Open-Source Graphics For Steam On Linux Gaming
  4. Preview: OS X 10.10 Yosemite vs. Ubuntu Linux GPU Performance
Latest Linux News
  1. A New AMD Catalyst Linux Driver Unofficially Surfaces
  2. LibreOffice Ported To 64-bit ARM (AArch64)
  3. Enlightenment E19 RC3 Shows Off The New Wayland Compositor
  4. Metro Redux Is Going To Require OpenGL 4.x On Linux
  5. Jailhouse v0.1 Released As A Basic Hypervisor For Linux
  6. Google's Chromebook "Samus" Now Supported By Coreboot
  7. Chrome 38 Now In Beta With Exciting Advancements
  8. Ubuntu's Utopic Unicorn 14.10 Beta 1 Released
  9. Genode OS 14.08 Has New GUI Architecture, Pluggable VFS
  10. Another Intel Linux Power Regression Is Being Investigated
Latest Forum Discussions
  1. Catalyst 14.201.1008
  2. Btrfs Gets Talked Up, Googler Encourages You To Try Btrfs
  3. Users defect to Linux as OpenBSD removes Lynx from base system
  4. Updated and Optimized Ubuntu Free Graphics Drivers
  5. Canonical Joined The Khronos Group To Help Mir/Wayland Drivers
  6. Radeon HD5670 and Ubuntu 14.04
  7. AMD Releases UVD Video Decode Support For R600 GPUs
  8. Best Radeon for a Power Mac G5?