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.TH TZMON 4D "Oct 31, 2006"
.SH NAME
tzmon \- ACPI Thermal Zone Monitor
.SH DESCRIPTION
.sp
.LP
The \fBtzmon\fR is a pseudo driver that serves as an ACPI thermal zone monitor.
Thermal zones are logical regions  within a computer system for which ACPI
performs temperature monitoring and control functions. The number of thermal
zones on a system with ACPI support varies. For example, some systems may have
one or more thermal zones, while others may have none. See the \fIAdvanced
Configuration and Power Interface Specification, (ACPI) Version 3.0A\fR, for
more details.
.sp
.LP
The \fBtzmon\fR handles thermal Zone events from ACPI and polls the temperature
for each zone exposed  by the ACPI implementation. If threshold temperatures
are reached, \fBtzmon\fR takes appropriate action.  For example, if the
temperature is sufficiently high and the ACPI implementation supports it,
\fBtzmon\fR initiates system shutdown.
.sp
.LP
Note that by default,  system temperature control functions are usually
performed by the BIOS and may supersede \fBtzmon\fR functions, depending on the
BIOS implementation. Also, many ACPI implementations expose no thermal zones
and in these cases, \fBtzmon\fR performs no functions.
.SH ATTRIBUTES
.sp
.LP
See \fBattributes\fR(7) for descriptions of the following attributes:
.sp

.sp
.TS
box;
c | c
l | l .
ATTRIBUTE TYPE	ATTRIBUTE VALUE
_
Architecture 	x86/x64 only
_
Interface stability 	Private
.TE

.SH SEE ALSO
.sp
.LP
.BR attributes (7)
.sp
.LP
\fIAdvanced Configuration and Power Interface Specification, (ACPI), Version
3.0A.\fR