Armada 17xx, ACPI thermal management broken.

Nikolas Britton freebsd at
Tue Dec 21 05:35:01 PST 2004

Nikolas Britton wrote:

> Nikolas Britton wrote:
>> Hello,
>> I have a Compaq Armada 1750 laptop and ACPI is some what broken. If I 
>> enable ACPI the fan will never run causing the system to overheat and 
>> shutdown, there are a few other problems with ACPI but this is the 
>> major one. This is a standard 440BX/MX chipset (82443BX) so I don't 
>> understand why this doesn't work yet with FreeBSD, Is this a problem 
>> with my DSDT/AML/ASL whatever? The work around in the bug report I 
>> submitted ( ) 
>> does not work if the system is below the hw.acpi.thermal.tz0._ACx 
>> threshold, if it is below this threshold at system boot the fan will 
>> NEVER turn on even if is set in 
>> loader.conf.
>> Any help would be appreciated on ether fixing this problem or a way 
>> to use ACPI but disable the thermal monitoring so the system can 
>> control the fan?
>> Also... in the bug report there is a link to a Linux kernel patch 
>> that fixes this problem.
> Also is it not possible to just extract the AML code from that patch 
> an use it to make a FreeBSD patch? I don't know as I'm not a 
> programmer and I'm not sure of GPL issues

Sorry for the third reply to my own post but I thought this might help, 
it is a copy of my asl code:

I updated the bug report as well and I'm going to cross post this in 
freebsd-acpi mailing list.

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