Save power with Ubuntu 9.04 (Jaunty Jackalope) on a ThinkPad T400
Hi
// have to read wiki syntax to format correctly//
Contents
Basic information
I have Thinkpad T400 WC8......
9 cell battery now 60% last 4.37 h
Idle consumtion after this tipps: 11-13 watts
I use the ATI Card with the fglrx drivers, unfortunatelly the have no option to save power.
I use powernowd, Gudiance Power manager and KDE4.2 powerdevil.
4 Gig RAM 2.26 GHz 250GB/5400
Hibernate and suspend work (sometimes, crap fglrx driver)
Let's start:
Stop deamons you don't need with rcconf
Set wlan and bluetooth off (hardware switch)
Deaktivate the touchpad.
My Bios Settings:
Bluetooth off
Modem off
//have to look up other things//
Script to save power
This script reduce the power consumtion to 13-16 watts
Save this script as /etc/rc.local and do chmod +x on it
Then modify /etc/kde4/kdm/Xsetup
and add:
exec /etc/rc.local
before exit 0
The script:
Modify the xorg
Modify like this:
Section "Device"
Identifier "Configured Video Device" Driver "fglrx"
......
Option "DynamicClocks" "true" Option "PowerState" "1" BusID "PCI:1:0:0"
EndSection
and
Section "Monitor"
Identifier "aticonfig-Monitor[0]-1" Option "VendorName" "ATI Proprietary Driver" Option "ModelName" "Generic Autodetecting Monitor" Option "DPMS" "true"
EndSection
Use powernowd
install powernowd
Then modify /etc/default/powernowd
with this parameters(add after -q with a space after q):
-m 2 -l 20 -u 70 -s 300000
Powerdevil settings
Powersave Profile Settings:
general: Disable Composite
Dim after 1 min
Idle for +20 min shutdown
Lid: lock screen
- Button: Show logout dialog
screen:
Screen Brighness 75 %
enable display power management
standby 3 min suspend 6 min power off 8min
cpu:
scaleing: userspace sheme: powersave
Gudiance PowerManager
Lock screen after resume
Battery Powered:
Brightness 75%
drops below 10 min --> shutdown idle more than XXX do nothing cpu freq: dynamic (changed from powernowd then) Lid: lock screen
Blacklist
echo "blacklist pcmcia" >> /etc/modprobe.d/blacklist.conf
echo "blacklist yenta_socket" >> /etc/modprobe.d/blacklist.conf
Extend battery life
Let only charge your battery if the level goes under 12 % stops charge at 92% Does not load at any value between these two.
WARNING: you have to uncomment these lines in the script because i thaught they are permanent but they don't
echo 12 > /sys/devices/platform/smapi/BAT0/start_charge_thresh
echo 92 > /sys/devices/platform/smapi/BAT0/stop_charge_thresh
Well good luck and have fun i think if you use the intel card you can additionally save 3-5 watts