#!/bin/sh
#
# /etc/rc.d/rc.local:  Local system initialization script.
#
# Put any local setup commands in here:

# --> DELL i640m - power saving tweaks

# enable optimized process scheduling
echo 1 > /sys/devices/system/cpu/sched_mc_power_savings

# use ondemand cpufreq governor (both cpus)
echo "Powersave: switching to ondemand scaling governor."
echo -n ondemand > /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
echo -n ondemand > /sys/devices/system/cpu/cpu1/cpufreq/scaling_governor

# Fix dirty_ratio to avoid a possible stall with ck
echo 33 > /proc/sys/vm/dirty_ratio

# high pitch noise dirty fix
echo 2 > /sys/module/processor/parameters/max_cstate

# battery mode
AC=`cat /proc/acpi/ac_adapter/AC/state | grep -c 'off-line'`
if [ $AC -eq 1 ]; then
  echo "Powersave: AC adapter is off-line." 

  # switch to laptop mode (flush to hard disc every 10 minutes)
  echo -n 1 > /proc/sys/vm/laptop_mode
  echo -n 60000 > /proc/sys/vm/dirty_expire_centisecs
  echo -n 60000 > /proc/sys/vm/dirty_writeback_centisecs
  echo "Powersave: laptop mode enabled, sync timeout set to 10 minutes."

  echo "Powersave: activating hard drive spindown timeout and read-ahead."
  # the hd will spin down after two minutes; read 8MB ahead
  hdparm -S 6 -a 16384 /dev/sda
  # reduce pcm volume
  amixer set Master 42% > /dev/null

  echo "Powersave: mounting /tmp and KDE config directory in tmpfs."
  [ -d /home/jaguarwan/.kde-config-tmpfs ] && rm -rf /home/jaguarwan/.kde-config-tmpfs
  cp -a /home/jaguarwan/.kde /home/jaguarwan/.kde-config-tmpfs

  # mount /tmp and $HOME/.kde in tmpfs to avoid spurious hd spin-ups
  mount none -t tmpfs /home/jaguarwan/.kde
  mount none -t tmpfs /tmp
  chmod 1777 /tmp
  mkdir /tmp/.ICE-unix
  chmod 1777 /tmp/.ICE-unix
  mkdir /tmp/.iroha_unix
  chmod 1777 /tmp/.iroha_unix

  # copy the original files back and remove the additionnal backup
  cp -a /home/jaguarwan/.kde-config-tmpfs/* /home/jaguarwan/.kde
  rm -rf /home/jaguarwan/.kde-config-tmpfs
fi

# <-- DELL i640m - power saving tweaks

# Allow user access to the RTC
echo 1024 > /proc/sys/dev/rtc/max-user-freq

# --> Quircks 

# Add the 256MB video memory to MTRR for X.org
echo "base=0xc0000000 size=0x10000000 type=write-combining" >| /proc/mtrr

# Enable the 'home' special key from the front panel
setkeycodes e012 120

# Enable the Fn+F10 'eject' key
# -- seems to repeat indefinitely under X, so disable it for now
# setkeycodes e009 121

# Enable 1280x800 and 1280x1024
if [ -x /usr/sbin/915resolution ]; then
  /usr/sbin/915resolution 38 1280 800 24 > /dev/null
  /usr/sbin/915resolution 3a 1280 1024 24 > /dev/null
fi

# <-- Quircks

# Start music player daemon
if [ -x /etc/rc.d/rc.mpd ]; then
  /etc/rc.d/rc.mpd start
fi