https://github.com/hjdskes/powersave

Linux power save settings, compatible with systemd
https://github.com/hjdskes/powersave

battery laptop linux powersave ssd systemd

Last synced: 8 days ago
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Linux power save settings, compatible with systemd

• Host: GitHub
• URL: https://github.com/hjdskes/powersave
• Owner: Hjdskes
• License: wtfpl
• Created: 2012-06-09T10:36:27.000Z (over 12 years ago)
• Default Branch: master
• Last Pushed: 2017-06-07T09:04:59.000Z (over 7 years ago)
• Last Synced: 2024-11-01T00:51:25.776Z (15 days ago)
• Topics: battery, laptop, linux, powersave, ssd, systemd
• Language: Makefile
• Homepage:
• Size: 52.7 KB
• Stars: 135
• Watchers: 11
• Forks: 21
• Open Issues: 1
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
Powersave

=========

These files enable power saving on Linux. Note that these settings are applied regardless of whether

the system is on battery or AC. Power saving is applied to:

* Audio card (`modprobe.d/99-powersave.conf`)

* Backlight brightness (`rules.d/50-powersave-brightness.rules`)

* Bluetooth (disabled completely: `modprobe.d/blacklist.conf`)

* NMI watchdog (`sysctl.d/99-powersave.conf`)

* Writeback times (`sysctl.d/99-powersave.conf`)

* Laptop mode (`sysctl.d/99-powersave.conf`)

* Network interfaces, both wired and wireless (`modprobe.d/50-powersave-net.rules`)

* Buses (ASPM, PCI, USB, SATA ALPM, `tmpfiles.d/powersave.conf` and `modprobe.d/50-powersave-[pci|usb|sata].rules`)

Power saving is *not* applied to:

* HDD, since it is replaced with an SSD. SSD power usage is simply ignored, since I have yet to look

into this (and I believe it isn't that high). Tips are welcome!

* CPU frequencies, since the default is fine (using the `intel_pstate` driver).

* Swappiness, since I don't use a swap partition.

You might also want to edit `/etc/fstab` to add `commits=` to the `options` column of your

partitions. See the [mount man page][man-mount].

It is fit for my own laptop (Lenovo Thinkpad Edge E130), which means that this script will **not**

work on every setup. Please **check** this before running it on your computer! Things might break

otherwise and I am **not** responsible for any damage that has been done.

TODO

----

* `git grep TODO`

* Test the suspend-on-low-battery udev rule (`rules.d/50-powersave-suspend.rules`)

* SSD powersaving?

  * Apply noop schedular in powersave instead of boot config?

Installation

------------

The script will need the following dependencies to run:

* iw

* ip

* ethtool

* udev

* systemd

Just run `make install` as root to install the whole set.

To enable the ASPM setting to work, append `pcie_aspm=force` to your kernel parameter list. However,

before doing so, verify that all PCIe hardware on your system support ASPM!

  [man-mount]: http://man7.org/linux/man-pages/man8/mount.8.html#FILESYSTEM-INDEPENDENT_MOUNT%20OPTIONS