AIBS(4) Kernel Interfaces Manual AIBS(4)

NAME

aibsASUSTeK AI Booster voltage, temperature, and fan sensor

SYNOPSIS

aibs* at acpi?

DESCRIPTION

The aibs driver provides support for voltage, temperature, and fan sensors available as an ACPI device on ASUSTeK motherboards. The number of sensors of each type, as well as the description of each sensor, varies according to the motherboard.

The driver supports an arbitrary set of sensors, provides descriptions regarding what each sensor is used for, and reports whether each sensor is within the specifications as defined by the motherboard manufacturer through ACPI.

The aibs driver supports envsys(4) sensor states as follows:

Sensor values and limits are made available through the envsys(4) interface, and can be monitored with envstat(8). For example, on an ASUS V3-P5G965 barebone:

$ envstat -d aibs0 
                     Current  CritMax  WarnMax  WarnMin  CritMin Unit 
    Vcore Voltage:     1.152    1.600                      0.850    V 
     +3.3 Voltage:     3.312    3.630                      2.970    V 
       +5 Voltage:     5.017    5.500                      4.500    V 
      +12 Voltage:    12.302   13.800                     10.200    V 
  CPU Temperature:    27.000   95.000   80.000                   degC 
   MB Temperature:    58.000   95.000   60.000                   degC 
    CPU FAN Speed:       878              7200      600           RPM 
CHASSIS FAN Speed:         0              7200      700           RPM

Generally, sensors provided by the aibs driver may also be supported by a variety of other drivers, such as lm(4) or itesio(4). The precise collection of aibs sensors is comprised of the sensors specifically utilised in the motherboard design, which may be supported through a combination of one or more physical hardware monitoring chips.

The aibs driver, however, provides the following advantages when compared to the native hardware monitoring drivers:

As a result, sensor readings from the actual native hardware monitoring drivers are redundant when aibs is present, and may be ignored as appropriate. Whereas on some supported operating systems the native drivers may have to be specifically disabled should their presence be judged unnecessary, on others the drivers like lm(4) are not probed provided that acpi(4) is configured and the system potentially supports the hardware monitoring chip through ACPI.

SEE ALSO

acpi(4), envsys(4), envstat(8)

HISTORY

The aibs driver first appeared in OpenBSD 4.7, DragonFly 2.4.1 and NetBSD 6.0. An earlier version of the driver, named aiboost, first appeared in FreeBSD 7.0 and NetBSD 5.0.

AUTHORS

The aibs driver was written for OpenBSD, DragonFly BSD, and NetBSD by Constantine A. Murenin <http://cnst.su/>, Raouf Boutaba Research Group, David R. Cheriton School of Computer Science, University of Waterloo. Jukka Ruohonen <jruohonen@iki.fi> later reworked and adjusted the driver to support new ASUSTeK motherboards. The earlier version of the driver, aiboost, was written for FreeBSD by Takanori Watanabe and adapted to NetBSD by Juan Romero Pardines.
June 12, 2011 NetBSD 6.1