Laptop Power Management?
location: ubuntuforums.com - date: April 16, 2013
Hey guys, I've largely restricted using Ubuntu to my desktop as it is my main PC, but now I have installed it on my laptop as well for use when I am not at home. I plan to use my laptop exclusvely in the future so wanna get it all setup. Basically, it will be docked 50% running on full AC power and at full performance, but the other 50% of the time I will be traveling with it so battery life is important to me. I did a stock install of Ubuntu 12.04 LTS (x64) and basically, what tips/tricks/applications do you guys recommend to optimize battery life? Juniper is appearently dead(?) so I shouldn't use it and Ubuntu does have some built in power management options but I don't know effective they are at extending battery life...
Laptop specs = Intel Core i5, 8GB DDR3, 128GB SSD, Intel 4000 HD graphics, etc.
Laptop Power management
location: ubuntuforums.com - date: April 25, 2008
Running 8.04 - looking for something to throttle my cpu from 800mhz, to 1600mhz..?
I used to use a PANEL to control it, but that panel is not compatible w/ 8.04.
Any ideas? What do you use?
Sorry if this has been asked a lot.. but searching "Laptop power management" come up empty for 8.04.
Laptop power management?
location: ubuntuforums.com - date: April 22, 2009
After installing Ubuntu and using it for a couple weeks now, my only real issue is the power consumption.
My notebook is constantly running VERY hot, and there's no way I can switch to a "power saver" mode to fix that.
Normally in Windows I would switch to 15-25% CPU power, lower screen brightness, and various other power tweaks to conserve power (I live off-grid, so the less power usage the better), and to keep the laptop cooler when I'm just web browsing.
In Ubuntu, this isn't really possible. The other day I was in town all day, and due to this heavy power usage, I only got about an hour and a half battery time, compared to the 5.5 hours I would get with a custom "power saver" plan in Windows.
What are my options for power management? I installed Kpowersave, but it's disappointing, as it lacks power plan customization, and it's power saver plan is still very power-intense, only cutting the CPU to 50%.
Acer laptop power management
location: ubuntuforums.com - date: October 26, 2008
My question is more of an informative one.
Since in windows acer has its one power management application and you can setup what kind of efficiency you need to get from your machine i am wondering whats happening in linux.
For example in windows i have balance mode when running on AC, to use maximum cpu, graphics and when im on batterys to use less in order to preserve energy.
So i am wondering whats the default for linux. I am having maximum performance when on AC or its like i am on batteries.
laptop power management and disable devices
location: ubuntuforums.com - date: April 5, 2010
Is it possible to disable devices to increase battery life? I am looking for ways to incrase battery life with my install of 8.04.4 Desktop LTS install.
Need Help w/ Laptop power management
location: linuxquestions.com - date: February 9, 2006
ok, i have found quite a bit on the topic of power management for laptops. however, i am still a noob and need instructions broken down barney-style. I found this:
however, i know it's late but i can't seem to find directions for the step by step. this is very frustrating. as much as i like ubuntu i am not going to keep it if i can't setup my battery situation better than this. as always, help is appreciated.
p.s. typing 'laptop-mode start' doesn't do anything. and i did install the latest version of laptop-tools. it says that it is installed but not activated.
"Laptop Power Management not available"
location: linuxquestions.com - date: July 8, 2003
I just installed SuSE 8.2 and I get a red X over the battery icon in the system try. If I run the mouse over it, it says "Laptop Power Management not available."
If I right click and click "Configure KLaptop" I get:
Your computer seems to have a partial ACPI installation. ACPI was probably enabled, but some of the sub-options were not - you need to enable at least 'AC Adaptor' and 'Control Method Battery' and then rebuild your kernel.
comprehensive laptop power management toolset for slackware
location: linuxquestions.com - date: December 30, 2007
anyone know where i can get a comprehensive power management system for laptops running slackware? lesswatts.org is a hodgepodge and confusing.
Power Management on HP Laptop with Ubuntu 9.10
location: ubuntuforums.com - date: January 6, 2010
Whilst not a brand new user, I only occasionally get the time to look under the hood (away from actually using Ubuntu for work) to configure and optimise my set up.
Ubuntu 9.10 on an HP Pavillion DV6700 (AMD Turion 64 x2) 3GB RAM
I am trying to improve the meagre 2 hour battery life i get when on battery power. (I did achieve double this with Vista, but Vista is not worth using IMHO)
So after time reading forums (various) and web searches it would seem that the laptop-power-tools are the thing to use. I do have the CPU Freq scaling monitor set to OnDemand. This sets the 2GHz proc to 800MHz for normal use.
My usage is mostly on AC power (say 70% of time) but when I am on battery I want it of course to last as long as possible.
I conclude that I should use the spin down & lcd dim properties of the laptop-mode-tools but I cannot get the mode to enable on its own..have tried setting the acpi-support file entry to TRUE for enable_laptop_mode and reboot perfor
Ubuntu Server | MDADM | Power Management
location: ubuntuforums.com - date: January 26, 2013
I run Ubuntu server 12.04.1 LTS with mdadm and two RAID-1 SAta HD.
I wish to set this server that if there is no access to the HDs it will go into power saving so that I can save electricity.
I use this server as a NAS but there are long hours of inactivity during the 24h. Sometimes, I do not access it even in 2 days.
Can someone please instruct me on how to implement this? Internet references, step by step, is also welcomed if needed.
My BIOS handles Power managment as well as my HDs being two Seagate 1.5TB HD ST31500341AS
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