Diff for "AspireTimeline/Using"

Differences between revisions 5 and 6
⇤ ← Revision 5 as of 2009-10-07 19:59:21 →
Size: 1585
Editor: smtp
Comment:
← Revision 6 as of 2009-11-16 23:57:06 → ⇥
Size: 1736
Editor: bl11-126-52
Comment: added fix for wlan powersave
Deletions are marked like this. Additions are marked like this.
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"iwconfig wlan0 power on" doesn't seem to work anymore in 9.10 alpha 3! If the above command gives you the following output:
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cyberfish@cyberfish-laptop:~$ sudo iwconfig wlan0 power on
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It's likely that you're using a version of the driver that disabled that setting.
To upgrade to a new one, if you're on Karmic, try running:
{{{
sudo apt-get install linux-backports-modules-karmic-generic
}}}
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Working again in 9.10 Beta but with no significant power saving. Enabled by default? [[https://bugs.launchpad.net/ubuntu/+source/linux-backports-modules-2.6.31/+bug/405158|Source]]

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

If the above command gives you the following output: 

Error for wireless request "Set Power Management" (8B2C) :
    SET failed on device wlan0 ; Operation not supported.

It's likely that you're using a version of the driver that disabled that setting. To upgrade to a new one, if you're on Karmic, try running: 

sudo apt-get install linux-backports-modules-karmic-generic

Source

Upgrade Bios

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

AspireTimeline/Using (last edited 2009-11-16 23:57:06 by bl11-126-52)