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

I use an inspiron 7520; i7 3rd generation, AMD Radeon HD 7730m w/ intel 4000hd

I have noticed that my batttery life radically change when I awake my computer from sleep. When I just boot yp my computer, I have close 4 hours battery life, then if i awake the computer I have 2 hours. Weird eh?

oh by the way! I am using Jupiter to help.

share|improve this question
up vote 1 down vote accepted

There are two types of "sleep", one where it retains memory and trickles power and the other thats saves the memory to hard disk and totally shuts down.

Might be the reason? Using wrong "sleep"?

share|improve this answer
At the moment, I am using the suspend "sleep", so I should go hybrid? But how can I change it? – Jeff Labonte Mar 13 '13 at 18:09
Try the commands one t a time and see the effect. But Id try the pm-hybernate one first to see if your battery doesnt loose so much charge – Meer Borg Mar 13 '13 at 18:15
I tried, it is the hybrid hibernate that works best – Jeff Labonte Mar 13 '13 at 18:16
Good, a solution, now to test it long term – Meer Borg Mar 13 '13 at 18:19
I did. how can I switch the pm setting? – Jeff Labonte Mar 13 '13 at 18:24

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.