kern/72566: ACPI, FreeBSD disables fan on Compaq Armada 1750

[Nikolas Britton]

>Number:         72566
>Category:       kern
>Synopsis:       ACPI, FreeBSD disables fan on Compaq Armada 1750
>Confidential:   no
>Severity:       critical
>Priority:       low
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Tue Oct 12 09:50:24 GMT 2004
>Closed-Date:
>Last-Modified:
>Originator:     Nikolas Britton
>Release:        FreeBSD 5.3-BETA7
>Organization:
>Environment:
Stock FreeBSD 5.3-BETA7 ISO Disk 1, i386
>Description:
FreeBSD is disabling the fan causing the system to overheat and shutdown. 

hw.acpi.thermal.tz0.active=0
>How-To-Repeat:
N/A.
acpi0: <COMPAQ RSDTBL> on motherboard

>Fix:
set hw.acpi.thermal.tz0.active=1 in /boot/loader.conf and reboot, but then the fan is always on (unless you manually set hw.acpi.thermal.tz0.active to 0). the other option would be to disable acpi.
>Release-Note:
>Audit-Trail:
>Unformatted: