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#!/bin/sh
# from https://geoff.greer.fm/2017/07/16/thinkpad-x62/
# Disable the NMI watchdog
echo '0' > '/proc/sys/kernel/nmi_watchdog';
# Runtime power management for I2C devices
for i in /sys/bus/i2c/devices/*/device/power/control ; do
echo auto > ${i}
done
# Runtime power-management for PCI devices
for i in /sys/bus/pci/devices/*/power/control ; do
echo auto > ${i}
done
# Runtime power-management for USB devices
for i in /sys/bus/usb/devices/*/power/control ; do
echo auto > ${i}
done
# Low power SATA
for i in /sys/class/scsi_host/*/link_power_management_policy ; do
echo min_power > ${i}
done
# Disable Wake-on-LAN on ethernet port
#ethtool -s wlan0 wol d;
#ethtool -s eth0 wol d
#Enable Audio codec power management
echo '1' > '/sys/module/snd_hda_intel/parameters/power_save';
# Low power wireless
iw dev wlan0 set power_save on
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