Ask Ubuntu is a question and answer site for Ubuntu users and developers. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

First of all my laptop is asus n55sf with ubuntu 13.10.

I've installed bumblebee and it's working quite good (I've tried e.g. optirun firefox and it's working fine).

Right now I have problem with power management. In windows 7 my battery lasted for at least 3 hours and in ubuntu is more or less only 1 hour.

I'm not so advanced ubuntu user, so I need your help. Do I need to change some settings or install some additional software?

share|improve this question

To preserve your battery install TLP from their ppa which can be found at on my ASUS i7 laptop, I get same life as on Windows 8

share|improve this answer
I've done that some time ago - I think it help a little bit, but it's still not the same time as on Windows. – Jot eN Oct 18 '13 at 11:00
Are you running all your programs with Optirun? In that case don't expect any battery life as the nvida card sucks good amount of power. – Arup Roy Chowdhury Dec 18 '13 at 11:15
No, of course not;) – Jot eN Dec 18 '13 at 11:44
Thats strange as you should be getting the same consumption as Windows, can you do a sudo tlp-stat and tell me whats the wattage when battery is ON. – Arup Roy Chowdhury Dec 18 '13 at 16:19
/sys/class/power_supply/BAT0/power_now = 18524 [mW] ... are You asking for this? – Jot eN Dec 18 '13 at 17:57
up vote 2 down vote accepted

One of things that helps exceed time on battery was to use Cpufreq Indicator. It can be used for changing the CPU frequency on-the-fly.

sudo apt-get install indicator-cpufreq
share|improve this answer

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.