powernow

#!/usr/bin/env bash
# powerdown - get energy usagei

if [[ $EUID != 0 ]]; then
    echo "[powerdown] must be run as root"
    exit 1
fi

source /usr/lib/powerdown-functions

lock
display_power
echo

echo '1500' > '/proc/sys/vm/dirty_writeback_centisecs'
echo 'auto' > '/sys/bus/pci/devices/0000:00:17.0/ata1/power/control'
echo 'auto' > '/sys/bus/pci/devices/0000:00:17.0/ata2/power/control'

# nmi_watchdog
dump /proc/sys/kernel/nmi_watchdog

# cpu
for i in /sys/devices/system/cpu/cpu*/cpufreq/scaling_governor; do dump "$i"; done

# aspm
dump /sys/module/pcie_aspm/parameters/policy

# kernel write mode
dump /proc/sys/vm/laptop_mode
dump /proc/sys/vm/dirty_ratio
dump /proc/sys/vm/dirty_background_ratio
dump /proc/sys/vm/dirty_expire_centisecs
dump /proc/sys/vm/dirty_writeback_centisecs


# disk
for dev in $(awk '/^\/dev\/sd/ {print $1}' /etc/mtab); do display_readahead "$dev"; done
for i in /sys/class/scsi_host/host*/link_power_management_policy; do dump "$i"; done

# sound card
dump /sys/module/snd_hda_intel/parameters/power_save
dump /sys/module/snd_hda_intel/parameters/power_save_controller
dump /sys/module/snd_ac97_codec/parameters/power_save

# net
for i in $(iw dev | awk '$1 == "Interface" { print $2 }'); do display_wireless "$i"; done

# screen
for i in /sys/class/backlight/*; do dump "$i/brightness"; done

# webcam
display_module videodev

# bluetooth
display_module bluetooth

# open source ATI
dump /sys/kernel/debug/vgaswitcheroo/switch
for i in /sys/class/drm/card*/device/power_method; do dump "$i"; done
for i in /sys/class/drm/card*/device/power_profile; do dump "$i"; done
for i in /sys/class/drm/card*/device/power_dpm_state; do dump "$i"; done

# i915
dump /sys/module/i915/parameters/i915_enable_rc6
dump /sys/module/i915/parameters/lvds_downclock
dump /sys/module/i915/parameters/i915_enable_fbc
for i in /sys/kernel/debug/dri/*/i915_max_freq; do dump "$i"; done