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 On Haswell Under Linux: "We've Screwed Up"

Intel

Published on 18 October 2012 04:48 PM EDT
Written by Michael Larabel in Intel
12 Comments

After the change yesterday to now hide early Intel hardware support by default to fend off early driver issues for new graphics hardware -- such as mode-setting just outright failing to work -- Intel has commented a bit more on the driver support for the forthcoming "Haswell" hardware.

Daniel Vetter of Intel's Open-Source Technology Center sent in a drm-intel-fixes pull request that provides bug-fixes for the Intel DRM kernel driver. The main change as part of this pull, which is also for current Linux kernel stable series, is the disabling of Haswell (and Valley View) support by default and hiding it behind the previously talked about kernel module parameter.

Vetter's interesting statement though was: "We've aimed for basic hsw support in 3.6, but due to a few bad happenstances we've screwed up and only 3.8 will have better modeset support than vesa. To avoid yet another round of fallout from such a gaffle on for the next platform we've added a module option to disable early hw support by default. That should also give us more flexibility in bring-up."

Intel admits that it botched the early Haswell Linux support, which has been worked on publicly since March although the actual Haswell hardware won't begin shipping until H1'2013. Intel has had the support now within their DDX driver, Mesa, and Intel DRM driver, but the DRM driver is still being problematic.

The big issue it seems for Haswell with the Linux Direct Rendering Manager driver comes down to shoddy mode-setting right now and there isn't working Embedded DisplayPort (eDP) support in the current kernels. So basically your display might not even light-up if you happen to be toying with some Haswell engineering samples or for some reason are using old kernels when Haswell is introduced next year.

With the Linux 3.8 kernel is where everything will hopefully be ironed out. For Ubuntu users, this means there won't be good "out of the box" support until Ubuntu 13.04, which might be a problem depending upon whether Haswell processors surface before or after next April. For the Valley View Atom SoCs this will likely be a similar story with needing Linux 3.8+ for good support.

Let's hope the timing of the Ivy Bridge successor for once isn't too soon or many Linux desktop users may face a poor out-of-the-box Haswell experience. Let's also hope all of the Haswell bits are in fact worked out for Linux 3.8 and there aren't anymore last minute changes required.

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 15.04 Is The Easy Path To Better Performance On Intel Broadwell
  2. NVIDIA's Latest Maxwell Line-Up Against AMD With Catalyst On Linux
  3. Preliminary Tests Of Intel Sandy Bridge & Ivy Bridge vs. Broadwell
  4. AMD FX-8320E Performance On Linux
  5. Linux Compiler Benchmarks Of LLVM Clang 3.5 vs. LLVM Clang 3.6-rc1
  6. Intel Broadwell HD Graphics 5500: Windows 8.1 vs. Linux
Latest Linux News
  1. LLVM Adds Options To Do Fuzz Testing
  2. Coreboot Now Supports Another Dual-Socket AMD Motherboard
  3. Atomic Mode-Setting/Display Support Progresses In Linux 3.20
  4. NVIDIA 340.76 Brings Three Stable Fixes
  5. Intel Broadwell-U P-State vs. ACPI CPUFreq Scaling Linux Performance
  6. DragonFlyBSD Is Almost To Linux 3.10 Era Intel Graphics Support
  7. New Beta Of Witcher 2 Aims For Greater Performance
  8. NVIDIA Tegra DRM Driver Supports Atomic Mode-Setting In Linux 3.20
  9. Linux "GHOST" Vulnerability Hits Glibc Systems
  10. Linux Game Publishing Remains Offline, Three Years After The CEO Shakeup
Most Viewed News This Week
  1. LibreOffice 4.4 Is Coming Soon With New Features
  2. My Initial Intel Broadwell Linux Experience With The ThinkPad X1 Carbon
  3. Broadwell Linux Ultrabook Running MUCH Cooler Than Haswell
  4. LZHAM 1.0 Lossless Data Compression Codec Released
  5. Linux Users Upset By Chromium's Busted HiDPI Support
  6. Interstellar Marines On Linux With Catalyst: Bull S*#@
  7. Faster VP9 Decoding Is On The Horizon
  8. Radeon DRM Changes For The Linux 3.20 Kernel