Forked from @vodik. TODO: Edit these configurations to work with my Samsung NP530U4BL
Included here is a systemd service file, various config-lets and a few utilities to set or control certain power saving features. I set as much as I can statically on boot; I think its silly to increase power consumption simply because I'm on AC power.
Also look at my backlight utilities. The lightd daemon
is useful to automatically manage/dim the backlight.
A PKGBUILD is included as a convenience.
Enable power_save=1 for snd_hda_intel
- disable NMI watchdog
- set laptop mode
- increase the dirty writeback time
Set the powersaving features on network devices that must be enabled by 3rd-party commands. For every detected device:
ACTION=="add", SUBSYSTEM=="net", KERNEL=="eth*", RUN+="/usr/sbin/ethtool -s %k wol d"
ACTION=="add", SUBSYSTEM=="net", KERNEL=="wlan*", RUN+="/usr/sbin/iw dev %k set power_save on"
NOTE: this assumes modern Linux wireless drivers. There's no guarantee about naming of devices.
Enable pci powersaving features:
ACTION=="add", SUBSYSTEM=="pci", ATTR{power/control}="auto"
Enable sata powersaving features:
ACTION=="add", SUBSYSTEM=="scsi_host", ATTR{link_power_management_policy}="min_power"
Enable powersaving and autosuspend on usb ports:
ACTION=="add", SUBSYSTEM=="usb", TEST=="power/autosuspend", ATTR{power/autosuspend}="1"
ACTION=="add", SUBSYSTEM=="usb", TEST=="power/control", ATTR{power/control}="auto"