Feel free to add your tweaks here:-)

Power Consumption

Use powertop (sudo apt-get install powertop) to find out ways to reduce powerconsumption

• Wifi powersaving is important (2W), enable with "sudo iwconfig wlan0 power on"

One way of reducing powersaving is to add entries to /etc/rc.local so they get loaded at boot.

Sample /etc/rc.local for Timeline Laptops

#
# rc.local
#
# This script is executed at the end of each multiuser runlevel.
# Make sure that the script will "exit 0" on success or any other
# value on error.
#
# In order to enable or disable this script just change the execution
# bits.
#
# By default this script does nothing.

/sbin/iwconfig wlan0 power on

exit 0

Using powertop to measure power consumption (only available when running on battery), for the 3810t, 8-9W should be achievable with wifi on and LCD at medium brightness. That yields more than 7 hours of battery life. 4810tz bios 1.28 Ubuntu 9.10 beta 45% brightness wifi on ~9.2w

"iwconfig wlan0 power on" doesn't seem to work anymore in 9.10 alpha 3!

cyberfish@cyberfish-laptop:~$ sudo iwconfig wlan0 power on
Error for wireless request "Set Power Management" (8B2C) :
    SET failed on device wlan0 ; Operation not supported.

Working again in 9.10 Beta but with no significant power saving. Enabled by default?

Upgrade Bios

Use this guide for upgrading the bios, no need for windows http://www.netbooktech.com/tag/acer-aspire-one-bios-update-instructions/