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Linux - Laptop and Netbook Having a problem installing or configuring Linux on your laptop? Need help running Linux on your netbook? This forum is for you. This forum is for any topics relating to Linux and either traditional laptops or netbooks (such as the Asus EEE PC, Everex CloudBook or MSI Wind).

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Old 07-24-2010, 10:02 PM   #1
john_f_somers
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Registered: Mar 2006
Location: Hadley, MA
Distribution: Slack, Ubuntu, Suse
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Best Battery Life on Lenovo Thinkpad t500?


Hello,

I am wondering how to get the best battery life on a Lenovo Thinkpad T500 running Ubuntu 10.04. I recently purchased this system from LinuxCertified.com. I usually have installed Linux myself when I have purchased a new system. However, given the fact that I wanted the system soon and Lenovo said it would take three weeks, I figured I would give support to a company based around Linux. In any event, I am quite pleased with the laptop but would like to know if anyone has any helpful advice concerning Linux and laptop batteries. I am aware of the general things one should and should not do with batteries. However, I would like to get the most efficient use of the battery possible, a life comparable to that I would get in Windows XP Pro. (For the record, I prefer Linux to Windows on every count except this one. Having had Linux on several laptops, I have always seemed to notice that this is the one area in which Windows seems to outperform Linux. I would love to correct this problem.)

John
 
Old 07-25-2010, 09:42 AM   #2
Laurens73
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Registered: Aug 2009
Location: Zeewolde, Flevoland NL
Distribution: Debian squeeze (Gnome) on netbooks; Debian Lenny on servers and Debian wheezy (XFCE) on new laptops
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Ubuntu provides packages wich can be installed with your favourite package manager. Make sure the following packages are installed:

cpufreqd, cpufrequtils, libcpufreq0, acpi-support,

If you're using Gnome:
gnome-applets, gnome-power-manager

If you're using XFCE):
xfce4-cpufreq-plugin, xfce4-power-manager, xfce4-power-manager-plugins


After installing, add the extension to your panel, or acces the settings via the Gnome / XFCE menu. There should be a menu item with the power settings when running on batteries to lower the cpu frequency and monitor brightness saving your batteries.
 
Old 07-25-2010, 06:38 PM   #3
john_f_somers
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Thanks and Follow Up

Thank you. I have done all of the above. Within the power-manager applet, the only thing that you've mentioned that I do not see is a way to lower the cpu frequency. I do not mean to be obtuse, but, would mind directing me to a screenshot or something? If you cannot, no big deal, you have helped me with much of what I wanted to do anyway. :-)

JS

Quote:
Originally Posted by Laurens73 View Post
Ubuntu provides packages wich can be installed with your favourite package manager. Make sure the following packages are installed:

cpufreqd, cpufrequtils, libcpufreq0, acpi-support,

If you're using Gnome:
gnome-applets, gnome-power-manager

If you're using XFCE):
xfce4-cpufreq-plugin, xfce4-power-manager, xfce4-power-manager-plugins


After installing, add the extension to your panel, or acces the settings via the Gnome / XFCE menu. There should be a menu item with the power settings when running on batteries to lower the cpu frequency and monitor brightness saving your batteries.
 
Old 07-25-2010, 07:42 PM   #4
Laurens73
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Registered: Aug 2009
Location: Zeewolde, Flevoland NL
Distribution: Debian squeeze (Gnome) on netbooks; Debian Lenny on servers and Debian wheezy (XFCE) on new laptops
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Sure, no problem I'm also using a laptop, so it's quite easy to show. I'm using XFCE and within XFCE the settings can be obtained as shown in this file. I linked it as a normal url cause my laptop has a full-HD screen (1920x1080) and could get a lot of people into trouble when posting it as an image. Cause my system is half english, half dutch I'll put the menu structure in words for you: XFCE Menu >> Settings >> XFCE Settings manager >> Power Manager >> Extended [CPU Frequency Control].

I hope you're an XFCE user too, cause I don't know where the position is in Gnome.
 
Old 07-25-2010, 08:07 PM   #5
john_f_somers
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Registered: Mar 2006
Location: Hadley, MA
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Thanks...

It is curious...the Gnome version of the program is seemingly the same in every respect save the cpu frequency option. I greatly appreciate your help with this. As with all things Linux, this program must be a front-end for a program that I could run in the terminal so perhaps I will do some research about adjusting the cpu frequency that way.

Failing that, I guess I will have to use XFCE, at least when running off the battery.
:-)

Cheers,

JS

Quote:
Originally Posted by Laurens73 View Post
Sure, no problem I'm also using a laptop, so it's quite easy to show. I'm using XFCE and within XFCE the settings can be obtained as shown in this file. I linked it as a normal url cause my laptop has a full-HD screen (1920x1080) and could get a lot of people into trouble when posting it as an image. Cause my system is half english, half dutch I'll put the menu structure in words for you: XFCE Menu >> Settings >> XFCE Settings manager >> Power Manager >> Extended [CPU Frequency Control].

I hope you're an XFCE user too, cause I don't know where the position is in Gnome.
 
Old 07-25-2010, 08:38 PM   #6
john_f_somers
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Registered: Mar 2006
Location: Hadley, MA
Distribution: Slack, Ubuntu, Suse
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Solved.

I have found the solution. It would seem that GNOME puts CPU frequency scaling in a separate applet in the panel. So, I added this applet to the panel and then was able to adjust the cpu frequency at will! Thanks for your help. :-)

JS
Quote:
Originally Posted by john_f_somers View Post
It is curious...the Gnome version of the program is seemingly the same in every respect save the cpu frequency option. I greatly appreciate your help with this. As with all things Linux, this program must be a front-end for a program that I could run in the terminal so perhaps I will do some research about adjusting the cpu frequency that way.

Failing that, I guess I will have to use XFCE, at least when running off the battery.
:-)

Cheers,

JS
 
Old 07-25-2010, 10:02 PM   #7
Laurens73
Member
 
Registered: Aug 2009
Location: Zeewolde, Flevoland NL
Distribution: Debian squeeze (Gnome) on netbooks; Debian Lenny on servers and Debian wheezy (XFCE) on new laptops
Posts: 144

Rep: Reputation: 23
You're welcome
 
  


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