Ask Ubuntu is a question and answer site for Ubuntu users and developers. It's 100% free.

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'm new to Ubuntu, and I've just installed Ubuntu 11.10, and I must say I really like it a lot. I'm getting used to Ubuntu faster than I thought but the only issue I'm having is the power consumption.

I have a " dell 15R with BIOS a07" and I uninstalled Ubuntu 11.04 because of some glitches I hated. None of those appear on this Ubuntu but now my computer discharges way too quick. when I check the power icon, it states that I have like 3:45 min remaining, which is fairly the same as what win7 and Ubuntu 11.04 used to tell me but 15 min later I check again and it gives me only 1:15 min remaining. Also, my computer seems to get a lot hotter than it used to.

Is there more options to control the power usage on my laptop?

share|improve this question

closed as off topic by Bruno Pereira Feb 19 '12 at 1:28

Questions on Ask Ubuntu are expected to relate to Ubuntu within the scope defined by the community. Consider editing the question or leaving comments for improvement if you believe the question can be reworded to fit within the scope. Read more about reopening questions here.If this question can be reworded to fit the rules in the help center, please edit the question.

I have exactly the same problem, plus that it feels like it produces more noise than before. – user32459 Nov 10 '11 at 1:42
Same problem here and from what I have gathered it seems there is a bug or something wrong with the Linux Kernel 3.0 on some models and since Kernel upgrades are normally implemented only in releases we are pretty much stuck with this over heating issue until 12.04 is released – Mysterio Nov 10 '11 at 8:03
Welcome to Ask Ubuntu! This question should instead be filed as a bug report, and as such is off-topic, thanks! Bug #760131 – Bruno Pereira Feb 19 '12 at 1:28

UPDATE: Heres solution How do I solve this super 11.10 heating problem

Old post: That's cause its using processes for showing that unity and effects.

I tried on netbook 11.10 and 10.04.3 but found best results with Ubuntu Netbook Remix witch last version is made in 10.04 LTS and LTS on every Ubuntu version coming out witch means that its sub-version made just a month ago.

Take Ubuntu Netbook Remix 10.04.03 from here.

You can learn about LTS here .

Believe me it will be faster. Also I recommend my "clean installation 1st time one liner" command witch sets better performance and less useless programs and it will later be more longer with more speed up settings.

share|improve this answer
It is highly unlikely that the power usage have anything to do with Unity, since it doesn't consume much resources at all. (Which is why it runs great on ten year old hardware). There are other issues, however. For instance there are some new fixes in Linux that are necessary because of bad hardware, but do consume lots of power. But you are right that these issues were not present in 10.04. That isn't because it is an LTS. – Jo-Erlend Schinstad Nov 10 '11 at 7:08
BTW it does and its laggy and slow. And it lags a lot even on 5y old HW and also even on 1/2 ago released netbook. – Kangarooo Nov 12 '11 at 20:41
How did you confirm that this was about Unity and not Linux or other parts of Gnome? This seems like pure assumption to me. I'm not saying Unity is perfect, but I don't understand how it could possibly have a major impact on your battery life. – Jo-Erlend Schinstad Nov 13 '11 at 2:25
Thats a great assumption about 10y old HW yourself.. Is there still gnome with Unity also? Well i saw that unity responds really slowly with freezing. And since it needs more power to make graphics work faster- it consumes electric and in case using battery then electricy from battery. The more beeing used the more hotter computer gets. – Kangarooo Nov 13 '11 at 13:42
Yes, Unity is an app for Gnome. More precisely, it's a Compiz plugin. I weren't assuming anything. I was just saying that it isn't safe to make assumptions based on visual appearance. There are many things in your system that can consume lots of power. The fact that Unity is nice looking, doesn't prove that it requires lots of resources. Have you tried switching to Unity 2D, for instance? If the resource usage drops dramatically, then you'll know it's Compiz that causes it. If it doesn't, then it's something else in your system that causes it. – Jo-Erlend Schinstad Nov 14 '11 at 6:20

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