Public bug reported:
Binary package hint: pm-utils-powersave-policy
The kernel's laptop-mode setting will attempt to conserve power by
shutting down unused subsystems. Systems with laptop-mode enabled have
significantly longer batter life. It should definitely be enabled on all
laptops, and should probably even be enabled on desktop systems.
Under Jaunty, the laptop-mode-tools package was responsible for setting
the kernel's laptop-mode. It was disabled by default, but easy to
enable. Under Lucid, laptop-mode-tools is no longer installed by default
and has been replaced by pm-utils-powersave-policy, which does not offer
a simple way to enable laptop-mode. This package should enable laptop-
mode by default.
The current state of laptop-mode can be queried with the command
cat /proc/sys/vm/laptop_mode
And can be set by writing to the same file.
** Affects: pm-utils-powersave-policy (Ubuntu)
Importance: Undecided
Status: New
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laptop-mode is not enabled by default, resulting in poor battery life
https://bugs.launchpad.net/bugs/610267
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