ACPI temperature

Steven Friedrich freebsd at
Sun Nov 29 15:24:15 UTC 2009

I booted my HP Pavilion zd8215us and I immediately invoked chkCPUTemperature.
The first temp reported was 52C, which is 125.6F. This leads me to believe
that acpi has an anomaly regarding temperature measurement. The ambient temp 
was 71F (21.6C). The machine had been off for over eight hours.

Here's chkCPUTemperature:

# $Id:$

# CPU Temperature Information from ACPI
POLLING_RATE=`sysctl hw.acpi.thermal.polling_rate|awk '{print $2}'`
while [ 1 ]
	sysctl hw.acpi.thermal.tz0.temperature

uname -a
FreeBSD 7.2-RELEASE-p4 FreeBSD 7.2-RELEASE-p4 #1: 
Sat Oct  3 18:47:43 EDT 2009     
root at  i386

More information about the freebsd-questions mailing list