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

Intel Might Finally Have Linux Frame-Buffer Compression Fixed-Up, On By Default

Intel

Published on 19 June 2014 01:16 AM EDT
Written by Michael Larabel in Intel
4 Comments

For years the open-source Intel Linux graphics driver developers have been working on frame-buffer compression (FBC) support but never it's worked out quite good enough to turn it on by default in full. Frame-buffer compression has the ability to reduce power consumption for those using Intel HD Graphics while reducing the amount of memory bandwidth used for screen refreshes. Now though the Intel DRM FBC code has been re-worked and perhaps this time it will be flipped on by default.

Ville Syrjälä of Intel's Linux team sent out a massive set of 23 patches that re-work the DRM kernel driver's frame-buffer compression handling.

Ville wrote, "This series rewrites the FBC code to actually work. It utilizes the hardware tracking/nuking as much as possible, eg. relying on hardware nuke on flip when possible. I also introduce the generic ring and vblank notifier gizmos which could be used for various other things. I already included a patch to convert the IPS enable to be asynchronous by using the vblank notifier. Other users for thse could be mmio flips, watermark programming, atomic gamma/color correction (single buffered registers all) updates from vblank interrupt, etc."

Many low-level changes were made to the Intel DRM driver that led to over one thousand lines of new code being introduced. Hopefully this FBC support is indeed in good shape so it can be flipped on. With the patches, Ville is trying to enable Intel frame-buffer compression support by default for Intel "Ironlake" hardware and newer. Assuming the patches get reviewed favorably, the changes could wind up in the Linux 3.17 kernel cycle that will get underway in about two months.

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. Acer B286HK: A 28-inch UHD LED 4K Monitor For As Low As $350
  2. Intel Xeon E5-1680 v3 & E5-2687W v3 Compared To The Core i7 5960X On Linux
  3. Intel 120GB 530 Series SSD Linux Performance
  4. Btrfs/EXT4/XFS/F2FS RAID 0/1/5/6/10 Linux Benchmarks On Four SSDs
Latest Linux Articles
  1. Mesa Git Yields Performance Improvements For Newer AMD GPUs
  2. Apple OS X 10.10 vs. Ubuntu 14.10 Performance
  3. Mesa 10.5-devel Brings Some Intel Haswell HD Graphics Changes Over Mesa 10.3
  4. NVIDIA vs. Nouveau Drivers With Linux 3.18 + Mesa 10.4-devel
Latest Linux News
  1. Wine 1.7.32 Updates Its Mono Engine
  2. Mesa 10.4 Release Candidate 3 Is Here For Weekend Testing
  3. GenodeOS 14.11 Now Supports Intel's Wireless Hardware
  4. Jolla Tablet Could Have Upgrades For MicroSDHC, Split Screen, 3.5G
  5. Intel Has Last Round Of DRM Changes For Linux 3.19, Starts Dropping DRI1/UMS
  6. Fedora 21 Release Candidate 1 Awaits Your Testing
  7. GCC 5 Adds Support For ARM's Cortex-A17
  8. KWayland Server Component Coming For KDE Plasma 5.2
  9. NVIDIA Posts Tegra Gallium3D Patch For K1+ Support
  10. Ubuntu 14.10 MacBook Air Tests With Linux 3.18, Mesa 10.5
Latest Forum Discussions
  1. Aliens vs predator for Linux
  2. Updated and Optimized Ubuntu Free Graphics Drivers
  3. Hurrican SDL Port
  4. Roadmap to Catalyst 14.10 ?
  5. how to configure module phoromatic ?
  6. PulseAudio 6.0 Is Coming & Other Linux Audio Plans For The Future
  7. Debian Developer Resigns From The Systemd Maintainership Team
  8. Cant get working Kaveri APU - A10-7850k