Trim power hog on laptop: Thinkpad T400 with Linux

The following are ideas to remove power hogs in my laptop plus prolong its lifetime.

On Thinkpad T400 with Debian system (currently: Wheezy), do the following:

1) install laptop-mode-tools
Set the hard drive hdparm parameters to

BATT_HD_POWERMGMT=225
LM_AC_HD_POWERMGMT=254
NOLM_AC_HD_POWERMGMT=254

in /etc/laptop-mode/laptop-mode.conf.
Also set the hard disk spindown timeout to:

LM_AC_HD_IDLE_TIMEOUT_SECONDS=600
LM_BATT_HD_IDLE_TIMEOUT_SECONDS=120
NOLM_HD_IDLE_TIMEOUT_SECONDS=7200

This is needed for balance between battery life and your hard disk life.

2) disable wake-on-lan:

a) disable it on bios
b) install pm-utils hook blacklist  in /etc/pm/config.d/disable-wol-tweaks:

HOOK_BLACKLIST="disable_wol"

3) (TODO) disable wake-on-USB

4) install tp-smapi-dkms and add these entries in /etc/sysfs.conf:

devices/platform/smapi/BAT0/start_charge_thresh = 67
devices/platform/smapi/BAT0/stop_charge_thresh = 100

(Ref: http://www.thinkwiki.org/wiki/Tp_smapi)


If you have any more ideas, let me know.