kern/43508: fan are shut down in any case if running on battery

[demelier.david%gmail.com@localhost]

>Number:         43508
>Category:       kern
>Synopsis:       fan are shut down in any case if running on battery
>Confidential:   no
>Severity:       critical
>Priority:       high
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Thu Jun 24 21:50:00 +0000 2010
>Originator:     David DEMELIER
>Release:        -current
>Organization:
>Environment:
NetBSD Melon.malikania.fr 5.99.31 NetBSD 5.99.31 (Melon) #2: Thu Jun 24 
23:17:05 CEST 2010  
root%Melon.malikania.fr@localhost:/usr/obj/sys/arch/amd64/compile/Melon amd64
>Description:
When running on AC line, everything works perfectly if I excess a certain 
temperature fans will raise up. But running on battery I noticed that the fan 
is completely shut down! 

Then I excess 100C° and no fan turns! It's really dangerous because it 
overheats really soon and after 5-10 minutes the laptop is shut down.
>How-To-Repeat:

>Fix:
Disable fan controls on HP Probook ? (Canno't be done in the BIOS, nor by 
software, HP removes any sensors related to fans)