Kontron KTA55-pITX Manuel d'utilisateur télécharger pdf (Page 22)

KTD-S0043-A Page 19 Thermal Management

KTA55/pITX Software Guide

8 Thermal Management

The thermal management supports one mode: active cooling (no performance loss, but noise production).

8.1 Active Cooling

Only the AMD

Hudson-E1 Controller Hub controls the fan. The ACPI interface has no influence on the fan

control - no 'Thermal Zone' part is implemented.

An I

nternal Micro-Controller (IMC) based on a 8051 core manages the temperature measurement and fan

control. The Bios Setup makes it possible to define different fan control algorithm, see the submenu 'Ad-

vanced/Miscellaneous/Active Cooling Configuration'. You can choose between the LINEAR MODE and the

STEP MODE (entry 'Fan Speed Mode'). The STEP MODE holds the fan speed constant within a temperature

range. See the submenu 'Enhanced Fan Control' where you can define maximal 8 steps.

9 ACPI Wakeup

One wake event is possible: Wake On LAN (WOL).

9.1 Wake On LAN

9.1.1 Linux (Debian distributions)

Linux normally disables the wake functionality. This can be verified within the terminal with

cat /proc/acpi/wakeup

The following command allows the activation of a wake function (example USB0):

echo USB0 > /proc/acpi/wakeup

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Kontron KTA55-pITX Manuel d'utilisateur Page 22