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ipmi(4) [netbsd man page]

IPMI(4) 						   BSD Kernel Interfaces Manual 						   IPMI(4)

NAME
ipmi -- Intelligent Platform Management Interface driver SYNOPSIS
ipmi0 at mainbus? DESCRIPTION
The ipmi device driver supports motherboards implementing the Intelligent Platform Management Interface version 1.5 or 2.0, and exports sen- sors and the watchdog through the envsys(4) interface. EVENTS
The ipmi driver is able to send events to powerd(8) when a sensor's state has changed. Intrusion sensors will send a critical event when state is not ok. Power Supply sensors will send a critical event when the Power Supply unit is not installed and warning-over when the Power Supply unit is installed but not powered on. Fan, temperature and voltage sensors will send critical-over or critical-under when the value is very critical, or warning-over or warning-under if it's in a warning alert. SEE ALSO
envsys(4), envstat(8), powerd(8), wdogctl(8) HISTORY
The ipmi driver first appeared in OpenBSD 3.9 and was then ported to NetBSD 4.0. AUTHORS
The ipmi driver was originally written by Jordan Hargrave and was ported to NetBSD by Manuel Bouyer <bouyer@NetBSD.org>. BSD
September 8, 2008 BSD

Check Out this Related Man Page

APS(4)							   BSD Kernel Interfaces Manual 						    APS(4)

NAME
aps -- ThinkPad Active Protection System accelerometer SYNOPSIS
aps0 at isa? port 0x1600 DESCRIPTION
The aps driver provides support for several sensors found in some ThinkPad laptops. The sensors currently exposed via the envsys(4) interface are: Sensor Units Typical Use x-acceleration integer X-axis acceleration y-acceleration integer Y-axis acceleration x-variable integer Weighted X acceleration? y-variable integer Weighted Y acceleration? temperature 1 degC Unknown temperature temperature 2 degC Unknown temperature keyboard active boolean Keyboard activity mouse active boolean Mouse activity lid open boolean Lid state SEE ALSO
envsys(4), hpacel(4), thinkpad(4), envstat(8) HISTORY
The aps driver first appeared in OpenBSD 3.8 and was then ported to NetBSD 5.0. AUTHORS
The aps driver was written by Jonathan Gray <jsg@openbsd.org>. CAVEATS
Few issues can be mentioned. o The aps driver does not maintain state and subsequently does not take evasive action when it thinks the hard drive is in danger. Possi- ble actions would include spinning down the hard drive in case excessive tremor is detected by the sensors. o The Y axis on X40 and possibly other models seems to be inverted. It is unknown how to distinguish between different versions of the accelerometer to compensate for this in the driver at this time. o The sensor values are refreshed every 0.5 seconds. Because no protection measures are taken, this is unnecessary and may have a negative effect on battery life. o As IBM provides no documentation, it is not known what all the available sensors are used for. BSD
July 13, 2011 BSD
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