Bug #1934


Fan is always on

Added by Adam A R over 11 years ago. Updated about 11 years ago.

Target version:
Start date:
Due date:
% Done:


Estimated time:
1.00 h


Fan is continuosly on. This reduces battery life.
Also, the "Device Driver Utility" shows two unknown devices.
Intel Corporation 5 Series/3400 Series Chipset HECI Controller and
Intel Corporation 5 Series/3400 Series Chipset Thermal Subsystem.

I have installed 151a on Sony Vaio VPCEB390X.

CPU: Intel i5-580M
GPU: ATI Mobility Radeon HD 5650

Related issues

Related to OpenIndiana Distribution - Feature #2954: ATI Radeon 6.14.6 driverClosedKen Mays2012-06-302012-07-31

Actions #1

Updated by Yuri Pankov over 11 years ago

  • Status changed from New to Feedback

For this and other issues you reported - do you get any ACPI related errors in dmesg?

Actions #2

Updated by Robin Axelsson over 11 years ago

I'm on a stationary system using AMD Phenom II X4 and a Radeon HD 5770. I wrote the following in the OpenIndiana mailing list:

When I boot into the OpenIndiana, the GPU fan slowly ramps up the speed up to max within a few minutes (think slow crescendo but with loud noise instead of music). When I boot into Windows, the fan does not behave that way. What I have found out is that the fan/temperature profile is in the BIOS of the graphics adapter but it needs to be activated by the driver of the operating system, probably a bit flag somewhere that needs to be flipped. Catalyst (CCC) for Linux should take care of this but this is OpenIndiana.

On my system it is the GPU fan that is the cuplrit and not the other fans. It took me a while to realize this. I have tried troubleshooting this before all the way back when I used OpenSolaris. I was suggested to use the command powertop to see if there is a process that takes up a lot of CPU. I gave up in the end because I was unable to determine which fan it was. Today I have the proper equipment to measure the rpms of the fan without the need for software and I have found out which fans that are regulated and which fans that are not.

The graphics card consumes about 30W from its auxiliary power connector so it is not under a heavy load that would motivate such a high fan speed. I think it is a factory default setting to let the fan rotate at high speed until a proper driver initializes it, so we are basically looking at the radeon driver and routines for that should be in there.

I could not find any ACPI related error messages with dmesg and I doubt that the GPU fan control can be modified through ACPI.

Actions #3

Updated by Ken Mays about 11 years ago

  • Category set to Drivers
  • Status changed from Feedback to Rejected
  • Assignee set to Ken Mays
  • Priority changed from Normal to Low
  • Target version set to oi_151_stable
  • Estimated time set to 1.00 h
  • Tags changed from needs-triage to radeon

AMD Radeon HD is no longer officially supported under OI at this time (mainly due to lack of KMS in Illumos). See: for possible resolution. Fan control falls under KMS support/PM. You can also enable "ForceLowPowerMode|ClockGating|DynamicPM" in xorg.conf.


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