s2ram and kde-guidance-powermanager

[pol]

<posted & mailed>

Eduardo Robles Elvira wrote:
> I got a blank screen, and the leds didn't blink when resuming as they did
> before. I also found that s2ram -f worked, but I haven't been able to
> configure kde-guidance-amanger to use s2ram (can someone give me a quick
> guide of how to do it?). 

In file:

  /usr/lib/hal/scripts/linux/hal-system-power-suspend-linux

I have modified the first conditional expression (for linux o.s.) as
follows:  
  
       if [ -x "/sbin/s2ram" ] ; then
          /sbin/s2ram -f
         RET=$?

thus shifting downward the original condtion:
 
  $POWERSAVED_SUSPEND2RAM

standing for:

 POWERSAVED_SUSPEND2RAM="dbus-send --system --dest=com.novell.powersave \
                        --print-reply /com/novell/powersave \
                        com.novell.powersave.action.SuspendToRam"


Here included is my modified file.

best
--
Pol


---- inc
#!/bin/sh

POWERSAVED_SUSPEND2RAM="dbus-send --system --dest=com.novell.powersave \
                        --print-reply /com/novell/powersave \
                        com.novell.powersave.action.SuspendToRam"

alarm_not_supported() {
        echo org.freedesktop.Hal.Device.SystemPowerManagement.AlarmNotSupported >&2
        echo Waking the system up is not supported >&2
        exit 1
}

unsupported() {
        echo org.freedesktop.Hal.Device.SystemPowerManagement.NotSupported >&2
        echo No suspend method found >&2
        exit 1
}

read seconds_to_sleep

#PMU systems cannot use /sys/power/state yet, so use a helper to issue an
ioctl
if [ "$HAL_PROP_POWER_MANAGEMENT_TYPE" = "pmu" ]; then
        hal-system-power-pmu sleep
        if [ $? -ne 0 ]; then
                echo "org.freedesktop.Hal.Device.SystemPowerManagement.NotSupported" >&2
                exit 1
        fi
        exit 0
fi

#SuSE and ALTLinux only support powersave
if [ -f "/etc/altlinux-release" ] || [ -f "/etc/SuSE-release" ] ; then
        if [ -x /usr/bin/powersave ] ; then
                $POWERSAVED_SUSPEND2RAM
                RET=$?
        else
                # TODO: add support
                unsupported
        fi

#Mandriva supports suspend-scripts 
elif [ -f "/etc/mandriva-release" ] ; then 
    # TODO: fix pmsuspend to take a --wakeup-alarm argument 
    if [ $seconds_to_sleep != "0" ] ; then 
        alarm_not_supported 
    fi 
    
    if [ -x "/usr/sbin/pmsuspend" ] ; then 
        /usr/sbin/pmsuspend memory
        RET=$? 
    else 
        # TODO: add support 
        unsupported 
    fi 

#RedHat/Fedora only support pm-utils
elif [ -f "/etc/redhat-release" ] || [ -f "/etc/fedora-release" ] ; then
        # TODO: fix pm-suspend to take a --wakeup-alarm argument
        if [ $seconds_to_sleep != "0" ] ; then
                alarm_not_supported
        fi
        # TODO: fixup pm-suspend to define erroc code (see alarm above) and throw
        #          the appropriate exception
        if [ -x "/usr/sbin/pm-suspend" ] ; then
                /usr/sbin/pm-suspend
                RET=$?
        else
                # TODO: add support
                unsupported
        fi

#FreeBSD uses zzz to suspend for both ACPI and APM
elif [ "x`uname -s`" = "xFreeBSD" ] ; then
        if [ -x /usr/sbin/zzz ] ; then
                /usr/sbin/zzz
                RET=$?
        else
                unsupported
        fi

#Other distros just need to have *any* tools installed
else
        if [ -x "/sbin/s2ram" ] ; then
            /sbin/s2ram -f 
           RET=$?
        elif [ -x "/usr/bin/powersave" ] ; then
            $POWERSAVED_SUSPEND2RAM
            RET=$?
        elif [ -x "/usr/sbin/pmi" ] ; then
            /usr/sbin/pmi action suspend force
            RET=$?
        elif [ -x "/usr/sbin/hibernate" ] ; then
            # Use hibernate configured for suspend-to-ram
            /usr/sbin/hibernate -F/etc/hibernate/ram.conf
            RET=$?
        elif [ -x "/etc/acpi/sleep.sh" ] ; then
            # Use acpi-support for suspend to ram 
            /etc/acpi/sleep.sh force
            RET=$?
        elif [ -w "/sys/power/state" ] ; then
            # Use the raw kernel sysfs interface
            echo "mem" > /sys/power/state
            RET=$?
        else
            # TODO: add other scripts support
            unsupported
            fi
        fi

#Refresh devices as a resume can do funny things
for type in button battery ac_adapter
do
        devices=`hal-find-by-capability --capability $type`
        for device in $devices
        do
                dbus-send --system --print-reply --dest=org.freedesktop.Hal \
                          $device org.freedesktop.Hal.Device.Rescan
        done
done

exit $RET

------- end inc.