GNU/Linux Desktop Survival Guide by Graham Williams
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Power Management

20190512 Power management is a critical feature of any modern operating system. Through appropriate power management the unnecessary consumption of energy can be reduced and for laptop devices battery drain is reduced.

The current battery charge is provided through:

$ cat /sys/class/power_supply/BAT0/capacity
93

Subsections

• TLP
• APM Advanced Power Management
• Sleep Modes
• Laptop Remains on When Lid Closed
• Always On Power Management
  • Ignore Lid Closing