Comment 26 for bug 475641

Despite Manoj Iyer saying that this bug was fixed, the bug persists in Lucid. I was able to find a work-around by disabling ACPI support in the BIOS. Where the BIOS setup asks if OS supports ACPI, I set it to "NO". This fixed the problem where ASCI was conflicting with the W83627HF chip that lm-sensors needs to access.

After changing the BIOS setting to say that the OS did not support ACPI, I no longer got the message in DMESG that says "ACPI: I/O resource w83627hf [0x295-0x296] conflicts with ACPI". The PWMCONFIG program was then able to find the w83627hf chip and configure the fan settings for FANCONTROL.

If you need help with the process of installing and configuring the sensors and fancontrol, any of the following links explain the process.

http://www.garryconn.com/linux/how-to-control-cpu-and-case-fan-speeds-on-a-linux-server/

http://ubuntumanual.org/posts/127/how-to-control-fan-speed-lm-sensors-in-ubuntu

http://tuxtweaks.com/2008/08/how-to-control-fan-speeds-in-ubuntu/

http://www.robotsystematic.com/2009/howto/howto-fan-control-in-ubuntu

Greg