View difference between Paste ID: G0ujEsw0 and N7kxFndG

 #!/bin/sh
 # A script to enable laptop power saving features
 
 # List of modules to unload, space seperated. Edit depending on your hardware and preferences.
 modlist="uvcvideo"
 
 # Bus list for runtime pm.
 buslist="pci spi i2c"
 
 # Enable some power saving settings while on battery
 
 case "$1" in
     true)
 
 #hdparm settings
 hdparm -B 1 -S 60 /dev/sda
 
 # Intel audio power saving
 echo Y > /sys/module/snd_hda_intel/parameters/power_save_controller
 echo 1 > /sys/module/snd_hda_intel/parameters/power_save
 
 #Enable multi core power savings
 echo 1 > /sys/devices/system/cpu/sched_smt_power_savings
 
 #Enable laptop mode
 echo 5 > /proc/sys/vm/laptop_mode
 
-#Keep dirty writes in memory – non scrive sul disco finchè il 90% della memoria è piena: la #predefinita di pm-utils è 60 noi la settiamo a 90
+#Keep dirty writes in memory – non scrive sul disco finchè il 90% della memoria è piena: la predefinita di pm-utils è 60 noi la settiamo a 90
 echo 90 > /proc/sys/vm/dirty_ratio
 
 # Keep dirty writes out of cache – Quando arriva al valore impostato sopra, svuota la cache fino al valore impostato qui
 echo 1 > /proc/sys/vm/dirty_background_ratio
 
 # Writeback 10 min – ogni quanto si attiva il demone per scrivere su disco se la memoria non si riempie mai al valore impostato a dirty_ratio
 echo 60000 > /proc/sys/vm/dirty_writeback_centisecs
 
 #Imposta la frequenza dei processori su conservative
 cpufreq-set -r -g conservative
 
 #Fa in modo che i programmi che hanno un bassa priorità non causino l'incremento della frequenza  vale solo se la policy è conservative o ondemand, cioè con frequenza variabile. Con powersave che tiene sempre il processore al minimo non serve.
 echo 1 > /sys/devices/system/cpu/cpufreq/conservative/ignore_nice_load
 
 # Set backlight brightness
 echo 1 >  /sys/class/backlight/acpi_video0/brightness
 
 # wireless powersave
 iwconfig wlan0 power on
 iwconfig wlan0 power timeout 500ms
 
 # disable ethernet on battery
 ifconfig eth0 down
 
 # i915
 #echo 1 > /sys/module/i915/parameters/i915_enable_rc6
 #echo 1 > /sys/module/i915/parameters/i915_enable_fbc
 #echo 1 > /sys/module/i915/parameters/lvds_downclock
 
 # Disable nmi watchdog
 echo 0 > /proc/sys/kernel/nmi_watchdog
 
 # Swappiness
 echo 9 > /proc/sys/vm/swappiness &
 
 
 # USB powersaving
         for i in /sys/bus/usb/devices/*/power/autosuspend; do
             echo 1 > $i
         done
 for i in /sys/bus/usb/devices/*/power/level; do echo auto > $i; done
 
 # SATA power saving
         for i in /sys/class/scsi_host/host*/link_power_management_policy; do
             echo min_power > $i
         done
 
 #Disable hardware modules to save power
         for mod in $modlist; do
             grep $mod /proc/modules >/dev/null || continue
             modprobe -r $mod 2>/dev/null
         done
 
 # Enable runtime power management.
         for bus in $buslist; do
             for i in /sys/bus/$bus/devices/*/power/control; do
                 echo auto > $i
             done
         done
 
  ;;
     false)
 
  #Return settings to default on AC power
 
 hdparm -B 128 -S 0 /dev/sda
 echo N > /sys/module/snd_hda_intel/parameters/power_save_controller
 echo 0 > /sys/module/snd_hda_intel/parameters/power_save
 echo 0 > /sys/devices/system/cpu/sched_smt_power_savings
 echo 0 > /proc/sys/vm/laptop_mode
 echo 10 > /proc/sys/vm/dirty_ratio
 echo 5 > /proc/sys/vm/dirty_background_ratio
 echo 500 > /proc/sys/vm/dirty_writeback_centisecs
 cpufreq-set -r -g ondemand
 echo 0 > /sys/devices/system/cpu/cpufreq/conservative/ignore_nice_load
 echo 13 >  /sys/class/backlight/acpi_video0/brightness
 iwconfig wlan0 power off
 ifconfig eth0 up
 #echo 0 > /sys/module/i915/parameters/i915_enable_rc6
 #echo 0 > /sys/module/i915/parameters/i915_enable_fbc
 #echo 0 > /sys/module/i915/parameters/lvds_downclock
 echo 1 > /proc/sys/kernel/nmi_watchdog
 echo 60 > /proc/sys/vm/swappiness
 for i in /sys/bus/usb/devices/*/power/autosuspend; do
             echo 2 > $i
         done
 for i in /sys/bus/usb/devices/*/power/level; do echo on > $i; done
 for i in /sys/class/scsi_host/host*/link_power_management_policy
             do echo max_performance > $i
  done
 
 for mod in $modlist; do
             if ! lsmod | grep $mod; then
                 modprobe $mod 2>/dev/null
             fi
         done
 
          for bus in $buslist; do
             for i in /sys/bus/$bus/devices/*/power/control; do
                 echo on > $i
             done
         done
     ;;
 esac
 
 exit 0