Красивое решение сна для нетбуков с задержкой в ubuntu

Собственно срипт .sh:

#!/bin/bash
PM_HIBERNATE_DELAY=1800  # 30 minutes
PM_RTC=/sys/class/rtc/rtc0

PM_LOGFILE="/var/log/super_sleep.log"
log()
{
        is_set "$LOGGING" || return 0;
        local fmt='%s\n'
        [ "$1" = "-n" ] && { fmt='%s'; shift; }
        printf "$fmt" "$*"
}



WAKETIME=$(( $(cat "$PM_RTC/since_epoch") + PM_HIBERNATE_DELAY))
        echo >"$PM_RTC/wakealarm"
        echo $WAKETIME > "$PM_RTC/wakealarm"
        if s2ram; then
            NOW=$(cat "$PM_RTC/since_epoch")
            if [ "$NOW" -ge "$WAKETIME" -a "$NOW" -lt $((WAKETIME + 30)) ]; then
                log "Woken by RTC alarm, hibernating."
                # if hibernate fails for any reason, go back to suspend.
                s2disk || s2ram
            else
                echo > "$PM_RTC/wakealarm"
            fi
        else
            # if we cannot suspend, just try to hibernate.
            s2disk
        fi

Взят отсюда:
http://www.linux.org.ru/forum/desktop/10797723