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https://www.thinkwiki.org/w/index.php?title=Save_power_with_Ubuntu_9.04_(Jaunty_Jackalope)_on_a_ThinkPad_T400&diff=44436
Save power with Ubuntu 9.04 (Jaunty Jackalope) on a ThinkPad T400
2009-09-29T18:13:44Z
<p>Afty: corrected spelling</p>
<hr />
<div>Hi<br />
<br />
// have to read wiki syntax to format correctly//<br />
<br />
==Basic information==<br />
<br />
I have Thinkpad T400 WC8......<br />
<br />
9 cell battery now 60% last 4.37 h<br />
<br />
Idle consumption after these tips: 11-13 watts, before the tips I used 30-35 watts<br />
<br />
I use the ATI Card with the fglrx drivers, unfortunately they have no option to save power.<br />
<br />
I use powernowd, Gudiance Power manager and KDE4.2 powerdevil.<br />
<br />
4 Gig RAM 2.26 GHz 250GB/5400<br />
<br />
Hibernate and suspend work (sometimes, crap fglrx driver)<br />
<br />
== Let's start: ==<br />
<br />
Stop daemons you don't need with rcconf<br />
<br />
Set wlan and bluetooth off (hardware switch)<br />
<br />
Deactivate the touchpad.<br />
<br />
== My Bios Settings: ==<br />
<br />
<br />
Bluetooth off<br />
<br />
Modem off<br />
<br />
Wake on lan off<br />
<br />
Flash over lan off<br />
<br />
Serial port off<br />
<br />
Always USB off<br />
<br />
CdromSpeed silent<br />
<br />
Virtualisation off<br />
<br />
Dockingstation off<br />
<br />
<br />
== Script to save power ==<br />
<br />
This script reduce the power consumption to 13-16 watts<br />
<br />
Save this script as '''/etc/rc.local''' and do chmod +x on it<br />
<br />
Then modify '''/etc/kde4/kdm/Xsetup'''<br />
<br />
and add:<br />
<br />
'''exec /etc/rc.local'''<br />
<br />
before exit 0<br />
<br />
The script:<br />
<br />
[http://de.pastebin.ca/1397527 think_powersave]<br />
<br />
== Modify the xorg ==<br />
<br />
Modify like this:<br />
<br />
Section "Device"<br />
Identifier "Configured Video Device"<br />
Driver "fglrx"<br />
......<br />
Option "DynamicClocks" "true"<br />
Option "PowerState" "1"<br />
BusID "PCI:1:0:0"<br />
EndSection<br />
<br />
and<br />
<br />
Section "Monitor"<br />
Identifier "aticonfig-Monitor[0]-1"<br />
Option "VendorName" "ATI Proprietary Driver"<br />
Option "ModelName" "Generic Autodetecting Monitor"<br />
Option "DPMS" "true" <br />
EndSection<br />
<br />
== Use powernowd==<br />
<br />
install powernowd<br />
<br />
Then modify '''/etc/default/powernowd'''<br />
<br />
with these parameters(add after -q with a space after q):<br />
<br />
-m 2 -l 20 -u 70 -s 300000<br />
<br />
==Powerdevil settings==<br />
<br />
Powersave Profile Settings:<br />
<br />
general:<br />
Disable Composite<br />
<br />
Dim after 1 min<br />
<br />
Idle for +20 min shutdown<br />
<br />
Lid: lock screen<br />
<br />
any Button: Show logout dialog<br />
<br />
screen:<br />
<br />
Screen Brightness 75 %<br />
<br />
enable display power management<br />
<br />
standby 3 min<br />
suspend 6 min<br />
power off 8min<br />
<br />
cpu:<br />
<br />
scaling: userspace<br />
scheme: powersave<br />
<br />
==Guidance PowerManager==<br />
<br />
Lock screen after resume<br />
<br />
Battery Powered:<br />
<br />
Brightness 75%<br />
<br />
drops below 10 min --> shutdown<br />
idle more than XXX do nothing<br />
cpu freq: dynamic (changed from powernowd then)<br />
Lid: lock screen<br />
<br />
==Blacklist==<br />
<br />
echo "blacklist pcmcia" >> /etc/modprobe.d/blacklist.conf<br />
<br />
echo "blacklist yenta_socket" >> /etc/modprobe.d/blacklist.conf<br />
<br />
Well good luck and have fun I think if you use the Intel card you can additionally save 3-5 watts</div>
Afty