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

LM_Sensors Finally Gets Better Intel CPU Support

Intel

Published on 17 May 2010 08:11 AM EDT
Written by Michael Larabel in Intel
9 Comments

While the Linux hardware compatibility of modern processors and motherboards have normally been spot-on, as talked about in our many reviews, one of the areas that still causes annoyances with modern hardware can be the hardware sensors support. For motherboards this commonly means being able to monitor sensors for the temperatures, fan speeds, voltages. For the CPUs, their integrated temperature sensor(s) also aren't commonly supported on just-released Intel and AMD products.

For those with newer Intel CPUs, there is good news as new patches have been posted over the night that enable the LM_Sensors coretemp kernel module to support more modern chips. The newest Intel Core 2 Duo and Core 2 Quad CPUs along with those from the Nehalem and Westmere families have been tested with this code. The Atom N270 has also been tested, but unfortunately its value is currently off.

The first published patch removes the conditional checks for seeing if a thermal sensor can be found on the die of processors such as the Pentium M, Core 2 Duo 65nm, Core 2 Solo 65nm, Penryn, Nehalem, and Lynnfield. Instead the driver now checks a CPUID instruction (CPUID.06H.EAX[0]) to determine if thermal sensors are available. This should hopefully make the driver more forward-compatible with new Intel processors in the future. Another published patch now reads the TjMax value from the CPU itself via an MSR.

This Intel Linux sensor work was done by Intel's Huaxu Wan and Carsten Emde of the Open-Source Automation Development Lab eG. The patches can be found on the LM_Sensors mailing list.

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. Khronos Group Announces Vulkan, OpenCL 2.1, SPIR-V
  2. Samsung 850 EVO SSD Linux Benchmarks
  3. Kubuntu 15.04 Is Turning Out Quite Nice, Good Way To Try Out The Latest KDE
  4. 5-Way Linux Distribution Comparison On The Core i3 NUC
  5. OCZ ARC 100 Linux SSD Benchmarks
  6. Lenovo ThinkPad X1 Carbon Works Great As A Linux Ultrabook
Latest Linux News
  1. NVIDIA Announces Shield Set-Top Gaming Box
  2. Valve Launches $49 Steam Link, SteamOS-Powered Streaming Device
  3. Valve Announces Source 2, It's Going To Be Free To Content Developers
  4. Gitorious Gets Acquired By GitLab
  5. Unity 5.0 Brings PhysX 3.3, WebGL Preview, Animation System Work
  6. Linux 4.0-rc2 Kernel Released After Delay Due To Intel DRM Driver
  7. Linux 3.19 Officially Lands For Ubuntu 15.04
  8. Clutter Now Supports Quad-Buffer Stereo Displays, Mir Backend
  9. Pricing Details On The Alleged MJ Ubuntu Tablet Design
  10. Understanding The Linux Kernel's BPF In-Kernel Virtual Machine
Most Viewed News This Week
  1. More Proof That Allwinner Is Violating The GPL
  2. The Tremendous Features Of Fedora 22
  3. Krita 2.9 Released, Their Biggest Release Ever
  4. A Single UEFI Executable With The Linux Kernel, Initrd & Command Line
  5. Xfce 4.12 Released After Nearly Three Years Of Work
  6. LLVM 3.6 & Clang 3.6 Deliver More Features, Complete C++14 Support
  7. 8cc: A Small C11 Compiler
  8. ALSA 1.0.29 Released
%%CLICK_URL_UNESC%%