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6 .TH TZMON 7D "Oct 31, 2006"
8 tzmon \- ACPI Thermal Zone Monitor
12 The \fBtzmon\fR is a pseudo driver that serves as an ACPI thermal zone monitor.
13 Thermal zones are logical regions within a computer system for which ACPI
14 performs temperature monitoring and control functions. The number of thermal
15 zones on a system with ACPI support varies. For example, some systems may have
16 one or more thermal zones, while others may have none. See the \fIAdvanced
17 Configuration and Power Interface Specification, (ACPI) Version 3.0A.\fR for
21 The \fBtzmon\fR handles thermal Zone events from ACPI and polls the temperature
22 for each zone exposed by the ACPI implementation. If threshold temperatures
23 are reached, \fBtzmon\fR takes appropriate action. For example, if the
24 temperature is sufficiently high and the ACPI implementation supports it,
25 \fBtzmon\fR initiates system shutdown.
28 Note that by default, system temperature control functions are usually
29 performed by the BIOS and may supersede \fBtzmon\fR functions, depending on the
30 BIOS implementation. Also, many ACPI implementations expose no thermal zones
31 and in these cases, \fBtzmon\fR performs no functions.
35 See \fBattributes\fR(5) for descriptions of the following attributes:
43 ATTRIBUTE TYPE ATTRIBUTE VALUE
45 Architecture x86/x64 only
47 Interface stability Private
56 \fIAdvanced Configuration and Power Interface Specification, (ACPI), Version