Concerning the related blueprint: "Integration of the laptop-mode-tools
package with the rest of the default system".

 * It looks less like integration and more like droping plus
reimplementation and repeating errors. laptop-mode-tools is a very well
maintained package widely used on debian laptops. Mangling the three
tasks of power management (https://wiki.ubuntu.com/PowerManagement) into
one (acpi-support) already failed miserably once. Use small tools
specialized for its task. Why not adeqately calling the laptop-mode-
tools script from pm-utils so that they do not trip over each other.
(possibly deactivating/changing and properly commenting some of the
laptop-mode-tools options) But dropping laptop-mode-tools from the
distribution really does not look like a solution at all, much more if
crucial laptop_mode (disk idleing) gets no support.

 * Deliberately buffering disk writes with laptop-mode-tools of course
means loosing data on crashes (but not on battery run out). A reason not
to touch (disk idleing / laptop_mode) with pm-tools but make laptop-
mode-tools work in a pm-tools environment.

 * ext4 is supported by laptop-mode-tools since 1.47-1.

-- 
don't have any laptop-mode-tools settings in /etc/default/acpi-support
https://bugs.launchpad.net/bugs/244838
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