Moxa V2416-LX [23/88] Device suspend

V2416 Linux User's Manual Software Configuration

2-16

ATTENTION

You can free up the cache space with the command # apt-get clean.

MOXA:~# apt-get clean

MOXA:~#

Device Suspend

The V2416-LX supports ACPI S3 (suspend to ram). You should enable option S3 in the BIOS, and then use the

“pm-suspend --qurik-s3-bios” command.

MOXA:~# pm-suspend --quirk-s3-bios

After suspend is in effect, press the power button to wake up the computer.

If you login in as administrator (root) in X windows, you can use System  Shutdown  Suspend to

suspend your device. Note: This does not work for non-root users.

Some components on Moxa’s embedded computer may need to be reset after resuming. You can write a simple

script in the directory /usr/lib/pm-utils/sleep.d/ to complete this procedure. For example, you could

create a script 99serial for your application.

#!/bin/sh

case “$1” in

hibernate|suspend)

echo “close AP and tty ports which are opened”

echo “operations before serial ports suspend”

;;

thaw|resume)

echo “restart AP”

echo “operations after serial ports resume”

;;

*) exit $NA

;;

esac

NOTE If you want to see how to execute the script, start rsyslogd with the command “/etc/init.d/rsyslogd start”

and

then view the file /var/log/pm-suspend.log.