Provided by: thermald_1.9.1-1ubuntu0.7_amd64 
NAME
thermald - start Linux thermal daemon
SYNOPSIS
thermald [ OPTIONS ]
DESCRIPTION
thermald is a Linux daemon used to prevent the overheating of platforms. This daemon monitors temperature
and applies compensation using available cooling methods.
By default, it monitors CPU temperature using available CPU digital temperature sensors and maintains CPU
temperature under control, before HW takes aggressive correction action.
Thermal daemon looks for thermal sensors and thermal cooling drivers in the Linux thermal sysfs
(/sys/class/thermal) and builds a list of sensors and cooling drivers. Each of the thermal sensors can
optionally be binded to a cooling drivers by the in kernel drivers. In this case the Linux kernel thermal
core can directly take actions based on the temperature trip points, for each sensor and associated
cooling device. For example a trip temperature X in a sensor can be associates a cooling driver Y. So
when the sensor temperature = X, the cooling driver "Y" is activated.
Thermal daemon allows one to change this relationship or add new one via a thermal configuration file
(thermal-conf.xml). This file is automatically created (thermal-conf.xml.auto) and used, if the platform
has ACPI thermal relationship table. If not this needs to be manually configured.
For manual configuration refer to the manual page of the thermal-conf.xml.
In some newer platforms the auto creation of the config file is done by a companion tool "dptfxtract".
This tool can be downloaded from "https://github.com/intel/dptfxtract". It is suggested as parts of the
install process, run dptfxtract.
There can be multiple configuration files. User can select a configuration file via -config-file option
to override the default selection. The default selection picks one of the file in the following order:
- /etc/thermald/thermal-conf.xml.auto
- /var/run/thermald/thermal-conf.xml.auto
- /etc/thermald/thermal-conf.xml
(*Assuming configure prefix=/ is used during build.)
There is another companion tool "ThermalMonitor", which presents a graphical front end. This allows the
monitoring of sensors and changing of thermal trips to give the user more control. The source code of
"ThermalMonitor" is a part of the thermald github source, in the tools folder.
OPTIONS
-h, --help
Show help options.
--version
Print thermald version and exit.
--no-daemon
Don't become a daemon: Default is daemon mode.
--loglevel=info
log severity: info level and up.
--loglevel=debug
log severity: debug level and up: Max logging.
--poll-interval
Poll interval in seconds: Poll for zone temperature changes. To disable polling, set to zero.
Polling can only be disabled, if available temperature sensors can notify temperature change
asynchronously.
--dbus-enable
Enable Dbus.
--exclusive-control
Act as exclusive thermal controller. This will use user-space governor for thermal sysfs and take
over control.
--ignore-cpuid-check
Ignore cpuid check for supported CPU models.
--config-file
Specify thermal-conf.xml path and ignore default thermal-conf.xml.
--ignore-default-control
Ignore default CPU temperature control. Strictly follow thermal-conf.xml or thermal-conf.xml.auto.
--workaround-enabled Enable special workarounds. This is currently used for /dev/mem based power
control. --disable-active-power Disable active power management. This will not set active power
limits.
SEE ALSO
thermal-conf.xml(5) 8 May 2013 thermald(8)