desktop-powersave

An ansible role to enable power saving features on laptops with mostly Intel components.

• disable watchdogs which keep the laptop awake
• delay flushes to disk which let disk sleep longer
• disable Wake On Lan for the ethernet card
• enable power saving features of the:
  • PCI devices
  • SATA disks
• enable the power saving features of the Intel:
  • graphics chip
  • sound chip
  • wifi card

The role should run fine on machines without Intel components, it just won't have as much effect.

---
- hosts: localhost

  roles:
    - groks.desktop-powersave

Run powertop after a reboot to verify progress.

Requirements

An installation of Fedora on an Intel laptop.

Role Variables

Wait 15 seconds before flushing disk buffers:

vars:
  - desktop_powersave_dirty_writeback_centisecs: 1500

Dependencies

None.

License

BSD