Ubuntu 9.10 и выше. ThinkPad x200s/x220. Power Saving.

(Продолжение. Начало статьи)


От laptop-mode, который я использовал для 9.04 я отказался, поскольку муторно и непрозрачно. Проще для осмысления pm-utils.

1. Устраним баг, не дающий включить режим сохранения энергии для Wi-Fi
   
2. Установим apmd, pm-utils и expect $ sudo apt-get install apmd pm-utils expect hdparm libnotify-bin Мне expect нужен для управления роутером NBG460N EE из командной строки.
   
   
3. Cоздадим скрипт /usr/lib/pm-utils/power.d/99-savings.sh
   $ sudo gedit /usr/lib/pm-utils/power.d/99-savings.sh
   Копируем листинг к окно редактора и сохраняем.
   

   ######################################################################################
   # A script to agressively toggle power management between high 
   # performance and very low power usage.
   # For more information on each of these options, see http://www.lesswatts.org
   ################# Ghanges history ###################################################
   #VERSION=0.12   # 31.08.2010 Testing Ubuntu 10.04. Small changes for Wi-Fi control
   #VERSION=0.13   # 21.09.2010 Adding services control: 
                   #   evolution-alarm-notify, 
                   #   postfix, 
                   #   rsyslog
   #VERSION=0.2    # 23.07.2011 Modified for Ubintu 11.04 for Thinkpad x220 4290rw1
   VERSION=0.23    # 27.07.2011 Added store value (Brithness, user, etc ) to /tmp/powersave.ini
                   #   Fix notify-send message
                   #   Added CPU core disabling. Disable cores not affected for power saving
                   #     
   
   #
   # To install:
   #
   # sudo apt-get install apmd pm-utils expect hdparm libnotify-bin
   #
   # Save this file to /usr/lib/pm-utils/power.d/99-savings.sh
   # cd /usr/lib/pm-utils/power.d
   # sudo install 99-savings.sh /etc/pm/sleep.d
   # sudo install 99-savings.sh /etc/pm/power.d
   #
   
   INI=/tmp/powersave.ini
   
   aUsb()
   {
     #################################################
     ## USB Subsystem
     ##
     # 0.7-0.8 W
     case "$1" in
       false)  #ac_power
         for i in /sys/bus/usb/devices/*/power/control
         do
           echo "on" > $i
         done
         ;;
   
       true)  #batt_power
         for i in /sys/bus/usb/devices/*/power/control
         do
           echo "auto" > $i
         done
   
         for i in /sys/bus/usb/devices/*/power/autosuspend
         do
           echo 1 > $i
         done
   
         echo 1 > /sys/module/usbcore/parameters/autosuspend
         ;;
     esac
   }
   
   aSata()
   {
   
     case "$1" in
       false)  #ac_power
         # Set the SATA to max performance
         for i in /sys/class/scsi_host/host*/link_power_management_policy
         do
           echo max_performance > $i
         done
         ;;
   
       true)  #batt_power
         # Set SATA to minimum power
         # 0.7 W
         for i in /sys/class/scsi_host/host*/link_power_management_policy
         do
           echo min_power > $i
         done
         ;;
     esac
   }
   
   aPci()
   {
     case "$1" in
       false)  #ac_power
         for i in /sys/bus/pci/devices/*/power/control
         do
           echo on > $i
         done
         ;;
   
       true)  #batt_power
         for i in /sys/bus/pci/devices/*/power/control
         do
           echo auto > $i
         done
         ;;
     esac
   }
   
   aI2c()
   {
     case "$1" in
       false)  #ac_power
         for i in /sys/bus/i2c/devices/i2c-*/power/control
         do
           echo on > $i
         done
         ;;
   
       true)  #batt_power
         for i in /sys/bus/i2c/devices/i2c-*/power/control
         do
           echo auto > $i
         done
         ;;
     esac
   }
   
   aHdd()
   {
     case "$1" in
       false)  #ac_power
         # Set the drive to mostly stay awake.  Some may want to change -B 200
         # to -B 255 to avoid accumulating Load_Cycle_Counts
         # -S 240 => put in standby after 20 minutes idle
         # -B 200 => do not permit spindown
         # -M => not supported by my drive
         hdparm -B 200 -S 240 -M 254 /dev/sda
   
         # Remount ext3/4 filesystems so the journal commit only happens every 60
         # seconds.  By default this is 5 but, I prefer to reduce the disk
         # activity a bit.
         mount -o remount,commit=60,atime /
         ;;
   
       true)  #batt_power
         hdparm -B 1 -S 4 -M 128 /dev/sda
         mount -o remount,noatime,commit=600 /
   
         ;;
     esac
   }
   
   aSsd()
   {
   
   # add these commands in the /etc/rc.local
   #  echo deadline > /sys/block/sda/queue/scheduler
   #  echo 1 > /sys/block/sda/queue/iosched/fifo_batch
   #  sysctl -w vm.swappiness=1            # Strongly discourage swapping
   #  sysctl -w vm.vfs_cache_pressure=50   # Don't shrink the inode cache aggressively
     case "$1" in
       false)  #ac_power
         ;;
   
       true)  #batt_power
         ;;
     esac
   }
   
   aI915()
   {
     case "$1" in
       false)  #ac_power
         echo 0 > /sys/module/i915/parameters/powersave
         ;;
   
       true)  #batt_power
         echo 1 > /sys/module/i915/parameters/powersave
         ;;
     esac
   }
   
   aWlan()
   {
         # WiFi power savings.
     case "$1" in
       false)  #ac_power
         /sbin/iwconfig wlan0 power off txpower 14
         ;;
   
       true)  #batt_power
         /sbin/iwconfig wlan0 power on txpower 4
         ;;
     esac
   }
   
   aLan()
   {
     case "$1" in
       false)  #ac_power
         # set the ethernet max speed.
         ethtool -s eth0 wol d
         ethtool -s eth0 autoneg off speed 1000
         ;;
   
       true)  #batt_power
         # set the ethernet power savings.
         # ~ 0.4 W
         ethtool -s eth0 wol d
         ethtool -s eth0 autoneg off speed 100
         ;;
     esac
   }
   
   aCpu()
   {
     #################################################
     ## CPU
     ##
   
     case "$1" in
       false)  #ac_power
         for i in /sys/devices/system/cpu/cpu*/cpufreq/scaling_governor
         do
           echo performance > $i
         done
   
         # Enable All Core CPU
         for i in /sys/devices/system/cpu/cpu*/online
         do
           echo 1 > $i
         done
   
         # Shedule Multitreading
         echo 0 > /sys/devices/system/cpu/sched_mc_power_savings
         ;;
   
       true)  #batt_power
         for i in /sys/devices/system/cpu/cpu*/cpufreq/scaling_governor
         do
           echo powersave > $i
         done
   
   #      Disable cores not affected for power saving
   #      for i in /sys/devices/system/cpu/cpu*/online
   #      do
   #        echo 0 > $i
   #      done
   
         echo 1 > /sys/devices/system/cpu/sched_mc_power_savings
         ;;
     esac
   }
   
   aSnd()
   {
     case "$1" in
       false)  #ac_power
         echo 0 > /sys/module/snd_hda_intel/parameters/power_save
         ;;
   
       true)  #batt_power
         # Turn off sound card power savings
         # < 0.1 W
         echo 10 > /sys/module/snd_hda_intel/parameters/power_save
         ;;
     esac
   }
   
   aBt()
   {
     case "$1" in
       false)  #ac_power
         # Enable the bluetooth driver
         rfkill unblock bluetooth
         ;;
   
       true)  #batt_power
         # Remove the bluetooth driver
         # 0.3-0.4 W
         rfkill block bluetooth
         ;;
     esac
   }
   
   aDaemons()
   {
     #################################################
     ## demons, services
     ##
   
     case "$1" in
       false)  #ac_power
         # 1. Evolution alarm and integrations
         /usr/lib/evolution/2.32/evolution-alarm-notify &
         #/usr/lib/evolution/e-calendar-factory &
         #/usr/lib/evolution/e-addressbook-factory &
   
         # 2. Starting Sendmail server 
         #postfix start 
   
         # 3. Starting CouchDB & desktopcouch
         dbus-send --session --dest=org.desktopcouch.CouchDB --print-reply --type=method_call / org.desktopcouch.CouchDB.getPort
         ;;
   
       true)  #batt_power
         # 1. Evolution alarm
         killall evolution-alarm-notify
         #killall e-calendar-factory
         #killall e-addressbook-factory
   
         # 2. Stopping Sendmail server 
         #postfix stop
   
         # 3. Stoping CouchDB & desktopcouch
         killall beam.smp
         killall desktopcouch-service
         ;;
     esac
   }
   
   # < 0.1 W
   aWebcam()
   {
     case "$1" in
       false)  #ac_power
         # Enable the webcam driver
         modprobe uvcvideo
         ;;
   
       true)  #batt_power
         # Remove the webcam driver
         modprobe -r uvcvideo
         ;;
     esac
   }
   
   aMemory()
   {
     case "$1" in
       false)  #ac_power
         # Set kernel dirty page value back to default
         echo 10 > /proc/sys/vm/dirty_ratio
         echo 5 > /proc/sys/vm/dirty_background_ratio
   
         # Only wakeup every 60 seconds to see if we need to write dirty pages
         # By default this is every 5 seconds but, I prefer 60 to reduce disk
         # activity.
         echo 6000 > /proc/sys/vm/dirty_writeback_centisecs
         ;;
   
       true)  #batt_power
         # Reduce disk activity by waiting up to 10 minutes before doing writes
         echo 90 > /proc/sys/vm/dirty_ratio
         echo 1 > /proc/sys/vm/dirty_background_ratio
         echo 60000 > /proc/sys/vm/dirty_writeback_centisecs
         ;;
     esac
   }
   
   aBrightness()
   {
     case "$1" in
       false)  #ac_power
         # Setup maximum brigthness
         # Thinkpad x220, Ubuntu 11.04
         vBAT_BRI=$(cat /sys/devices/virtual/backlight/acpi_video0/brightness)
         echo $vAC_BRI > /sys/devices/virtual/backlight/acpi_video0/brightness
         ;;
   
       true)  #batt_power
         # Setup brigthness 30%
         vAC_BRI=$(cat /sys/devices/virtual/backlight/acpi_video0/brightness)
         echo $vBAT_BRI > /sys/devices/virtual/backlight/acpi_video0/brightness
         ;;
     esac
   
   }
   
   aMisk()
   {
     case "$1" in
       false)  #ac_power
         # Turn off the laptop mode disk optimization
         echo 0 > /proc/sys/vm/laptop_mode
         echo tsc > /sys/devices/system/clocksource/clocksource0/current_clocksource
   
         # enable logging
         service rsyslog start
   
         # ZiXEL nbg460n. Set maximum wifi speed
         if [ -f /etc/pm/802.11.bgn ]; then /etc/pm/802.11.bgn 1; fi
   
         # enable winbindd
         if [ -f /etc/init.d/winbind ]; then  /etc/init.d/winbind start; fi
   
         # Powersave pci express
         echo performance > /sys/module/pcie_aspm/parameters/policy
         ;;
   
       true)  #batt_power
         # Set laptop disk write mode
         echo 5 > /proc/sys/vm/laptop_mode
         echo hpet > /sys/devices/system/clocksource/clocksource0/current_clocksource
         # disable logging
         service rsyslog stop
   
         # ZiXEL nbg460n. Set standard wifi speed
         if [ -f /etc/pm/802.11.bgn ]; then /etc/pm/802.11.bgn 0; fi
   
         # disable winbind
         if [ -f /etc/init.d/winbind ]; then  /etc/init.d/winbind stop ; fi
   
         echo powersave > /sys/module/pcie_aspm/parameters/policy
         ;;
     esac
   }
   
   aNotify()
   {
     case "$1" in
       false) #ac_power
         MSGH="AC" 
         MSGT="Maximum Performance Mode"
         MSGI="ac-adapter"
         ;;
       true)  #battery_power 
         MSGH="BATT" 
         MSGT="Battery Power Saving"
         MSGI="battery"
       ;;
     esac
   
     vUSER=`ps -C gnome-session -o user=` #find UID user who start gnome-session
     vPIDS=`pgrep -u $vUSER gnome-session` #find PID
     for PID in $vPIDS; do
       vDBUS_SESSION_BUS_ADDRESS=$(grep -z DBUS_SESSION_BUS_ADDRESS /proc/$PID/environ \
       | sed -e 's/DBUS_SESSION_BUS_ADDRESS=//')
       DBUS_SESSION_BUS_ADDRESS=$vDBUS_SESSION_BUS_ADDRESS DISPLAY=:0.0 sudo -u $vUSER notify-send "$MSGH" "$MSGT" -i "$MSGI"
     done
   }
   
   aLoadini()
   {
     if [ -e $INI ]; 
       then 
         echo "Restore Value"
         while read LINE
         do
           PARM=$(echo "$LINE" | awk '{print $1}')
           KEY=$(echo "$LINE" | awk '{print $2}')
           case $PARM in
             "AC_BRI")
               vAC_BRI=$KEY
               ;;
             "BAT_BRI")
               vBAT_BRI=$KEY
               ;;
             "USER")
               vUSER=$KEY
               ;;
             "PIDS")
               vPIDS=$KEY
               ;;
             "DBUS_SESSION_BUS_ADDRESS")
               vDBUS_SESSION_BUS_ADDRESS=$KEY
               ;;
           esac
           echo "$PARM $KEY"
         done < $INI
       else
         echo "Reset Value"
         vAC_BRI=15
         vBAT_BRI=8
         vUSER=""
         vPIDS=""
         vDBUS_SESSION_BUS_ADDRESS=""
     fi
   }
   
   aSaveini()
   {
     echo "AC_BRI $vAC_BRI" > $INI
     echo "BAT_BRI $vBAT_BRI" >> $INI
     echo "USER $vUSER" >> $INI
     echo "PIDS $vPIDS" >> $INI
     echo "DBUS_SESSION_BUS_ADDRESS $vDBUS_SESSION_BUS_ADDRESS" >> $INI
   }
   
   
   ##########################################################
   ## Apply settings
   ##
   aLoadini
   
   aCpu $1
   aUsb $1
   aI2c $1
   aSata $1
   aPci $1
   if [ $(hdparm -i /dev/sda | grep Model | awk '{print substr($2,1,3)}') = "SSD" ]; 
     then 
       aSsd $1
     else
       aHdd $1
   fi
   aI915 $1
   aWlan $1
   aLan $1
   aSnd $1
   aBt $1
   aWebcam $1
   aMemory $1
   aDaemons $1
   aBrightness $1
   aMisk $1
   aNotify $1
   
   aSaveini
   



4. Для управления роутером NBG460N EE из командной строки создадим скрипт: sudo gedit /etc/pm/802.11.bgn Копируем листинг к окно редактора и сохраняем.
   

   #!/usr/bin/expect
   
   ############################################
   # Set 802.11 /b/g mode for ZiXEL nbg460n ee
   # Need to install expect
   
   spawn "telnet" "192.168.1.1"
   
   expect "Password:"
   send "myPassword\r"
   expect "NBG460NEE>"
   send "wlan radio [lindex $argv 0]\r"
   expect "NBG460NEE>"
   send "exit\r"
   interact
   

   Справедливости ради скажу, что этот скрипт не является надежным.
   Если возникают проблемы с соединением при переходе в режим сохранения энергии лучше от него отказаться и не включать режим 802.11n.
   
   
5. Установка:
   $ cd /usr/lib/pm-utils/power.d $ sudo chmod 755 99-savings.sh $ sudo install 99-savings.sh /etc/pm/sleep.d $ sudo install 99-savings.sh /etc/pm/power.d
   
6. Проверка:
   Запускаем powertop
   $ sudo powertop
   и проверяем, что при питании от батареи он не дает никаких рекомендаций.
   

Полезные ссылки:

• Ubuntu Power Management
  
• Ubuntu Documentations. Power Management. Reduced Power
  
• ThinkPad. Idle consumptions.
  

Update:
31/08/2010. Проверил работу на версии 10.04. Поправил команды управления Wi-Fi адаптером.
12/12/2010. С роутером ZiXEL NBG460N EE в режиме, когда на роутере включен протокол 802.11 n/b/g и сохранение энергии на карточке ноута, происходило нарушение работы выражающееся в задержках ping до 6 секунд.
Для восстановления работоспособности роутер переводится в режим 802.11 n/b скриптом 802.11.bgn (требуется expect).
23/07/2011. Переработал структуру скрипта. Обеспечил работу для Ubuntu 11.04 на Thinkpad x220 4290RW1.
10/12/2011. Протестировал на Ubuntu 11.10.