Questions about battery usage and issues in Ubuntu.

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117
votes
22answers
94k views

Tips to extend battery life for laptops and notebooks

This question is present as a matter of historical interest. While you are encouraged to help maintain its answers, please understand that "big list" questions are not generally allowed on Ask ...
29
votes
5answers
20k views

Why does my computer get less battery life with Ubuntu compared to Windows?

Last year I purchased a Dell Inspiron 5315 laptop shipping with Windows 7 preinstalled. I installed Ubuntu 10.10 alongside it with dual-booting. On upgrading to Ubuntu 11.10, I was upset to find I now ...
67
votes
14answers
88k views

How to check battery status using terminal?

I would like a command that check the battery status through the terminal
31
votes
6answers
31k views

How can I limit battery charging to 80% capacity?

I just learned that some Lenovo laptops include a utility that offers to limit battery charging capacity to within 0–80% in order to slow the attenuation of the battery lifespan: How can I do this ...
10
votes
0answers
4k views

Battery drain on ubuntu is fast [duplicate]

My battery drain on win7 is less than that of ubuntu (around 45 min of difference). Can you advice me something to get best battery performance on my laptop? when I decrease the brightness it remains ...
12
votes
2answers
7k views

How to get the correct battery status?

At this moment, ever since I installed Ubuntu on this machine, the battery status says: not present. Looking at this answer, however, I find that /proc/acpi/battery/BAT1/info (sometimes its ...
17
votes
0answers
10k views

Battery life decreased after upgrade to 11.04 [duplicate]

Possible Duplicate: Why does my computer get less battery life with Ubuntu compared to Windows? After upgrading from Ubuntu 10.10, my battery life has decreased dramatically. There was a ...
6
votes
5answers
5k views

Battery indicator is stuck on “estimating”?

After installing Ubuntu 10.10, the battery indicator worked fine (both percent remaining and estimation on time). I then installed and configured some software (Skype, Pidgin, Thunderbird, removed ...
3
votes
4answers
9k views

The battery indicator in Unity panel not showing up

I installed Ubuntu 12.04 with Wubi. Well after being completely dazzled with the amount of free content in the Software Centre, I decided to go deeper and start messing with settings. Well after ...
16
votes
1answer
7k views

How to change critically low battery value?

I would like my laptop to hibernate itself when the battery level is 10% to be sure it has enough power to complete the operation properly. Actually if I don't pay attention my laptop informs me it ...
7
votes
2answers
2k views

Laptop immediately suspends when going onto battery power

I've got an MSI Wind, model U100 that's been running Ubuntu without trouble for a long while. After upgrading to 10.04 a few months ago, I've had this strange problem. As soon as I unplug the laptop ...
17
votes
4answers
8k views

Laptop battery life drastically decreased compared to Windows 7 [duplicate]

Possible Duplicate: Why does my computer get less battery life with Ubuntu compared to Windows? I am running Ubuntu 10.10 on my Dell Studio XPS 1640 and have about one hour of battery life ...
5
votes
5answers
9k views

Is Ubuntu Battery Management Better Than Windows?

Is Ubuntu battery management better than Windows ? I have noticed that in Windows 7 a fully charged battery shows 3:30 minutes but in Ubuntu it shows 2:00 hours ... !!! so what is the power ...
8
votes
1answer
4k views

How can I get notification when my laptop battery gets fully charged?

Sometimes my charger remains plugged into laptop even after charging is complete. Is there a way to get a pop-up message/notification when my battery gets full due to charging or is there any ...
5
votes
8answers
24k views

12.04 hangs at “checking battery state”

My 12.04 system hangs at "Checking battery state". At this stage, no commands work eg: Ctrl+Alt+f1, or Alt+f5. I ran recovery mode, and ran the following commands: sudo mount -o remount, rw / sudo ...
6
votes
1answer
936 views

Always be 100% bright when I'm using battery

When I'm using battery only - Ubuntu turns in some mode, when If I do not use my PC for about 5-10 seconds - the screeen becomes darker. Where do turn this option off? Because I often need to read ...
3
votes
3answers
4k views

“On battery” is not recognized

I have just bought a lovely ThinkPad Edge 11 which have ~6 hours of surfing in Windows 7. But unfortunately, a clean Ubuntu 10.10 give me max 4 hours which is not satisfactorily. Therefore I have ...
0
votes
1answer
509 views

Lenovo Y510P: Battery wont charge past 60%

On my y510p, I set Lenovos battery software to "Optimize battery health" while I was in Windows 8.1. I forgot to change it before overwriting that partition with Ubuntu, and now my battery in Ubuntu ...
13
votes
2answers
9k views

How to charge the battery till 60-80% only?

I just got my laptop's battery replaced and read a bit about how to prolong it's life. Most people say that the best choice is not to charge it will 100%, but rather to 60-80%. My battery is quite ...
8
votes
9answers
18k views

display brightness problem with ubuntu 13.04

I have a Dell Inspiron 5520 with intel core i7 and AMD Graphics card. It used to work fine with Ubuntu 12.04 and Ubuntu 12.10. Now I tried to install Ubuntu 13.04 but i can't change display ...
9
votes
3answers
3k views

Kernel patch that solves battery issues when for ubuntu ? [closed]

http://www.phoronix.com/scan.php?page=news_item&px=MTAxNDM When will this come for ubuntu ? I am getting tired with my 11.10 dieing at little over 50 minutes of battery when at the most extreme ...
7
votes
2answers
2k views

Battery icon changed?

I don't know what happened, but today when I logged in to Ubuntu 12.04, the battery icon looked strange (when unplugged): When it's plugged, the icon looks as always been, the problem is when it's ...
7
votes
3answers
5k views

Battery Critically Low at 85%?

I, along with many others, have been experiencing a problem with our Ubuntu 11.10 installations on our battery-powered laptop devices: The computer misreads information from the battery, so it thinks ...
6
votes
3answers
16k views

How to enable laptop-mode?

Laptop-mode is said to be one of the energy efficiency boosters for Linux. Now, sources I found say that to activate you need to: install laptop-mode-tools append LAPTOP_MODE_ENABLED=true (if it ...
5
votes
2answers
1k views

How to stop turning off sequence when power manager says that battery is too low and want to power down?

According to this thread I can disable this thing altogether but this battery-critical-power-down not always happens. Is there a way or terminal command that can stop the power manager shutting down ...
8
votes
2answers
401 views

How can I play a custom sound when my battery is low?

I want my computer to play a custom sound file when my battery is low (say 10%). How can I do this? Thanks
5
votes
2answers
3k views

Battery not detected

As the title say my laptop battery is not detected in maverick. I'm using ubuntu since ever and I've never come across this problem. I have a msi ms-171f vr705 series and everything is working fine ...
1
vote
3answers
3k views

Why does my laptop overheat and discharge faster in Ubuntu than Windows? [duplicate]

I am new to Linux. I have a Dell Inspiron 15 with a 1st generation Intel Core i3 and Ubuntu 12.10. My laptop gets heated quickly which doesn't happen on Windows. Also the battery is discharged faster ...
12
votes
6answers
13k views

Can I set the power indicator to show battery percentage instead of time remaining?

It's great that the indicator applet tells me I have 2 hours and 12 minutes of battery left, or that it will be charged in 1 hour 8 minutes, but I might well change my pattern of usage during that ...
7
votes
5answers
3k views

Application to display battery info

First of all, I am not sure the title of this question is the most appropriate however this is what I meant to say, There are many ways to extend the life of a laptop battery. One way is by not ...
3
votes
2answers
5k views

Regardless of battery charge, when unplugged Ubuntu displays critical battery message and hibernates

Regardless of battery charge, when unplugged Ubuntu displays critical battery message and hibernates. I can only seem to change it to either shutdown or hibernate. This does not happen when using ...
8
votes
3answers
8k views

Is there any utility to check whether my laptop battery is in healthy condition or not?

Is there any utility available on Ubuntu to check whether laptop battery is in healthy condition or not?
5
votes
2answers
2k views

Where do I set use_time_for_policy?

Where do i find the "use_time_for_policy" fix in ubuntu 11.10 Oneiric Ocelot? This post fixed it before. Laptop immediately suspends when going onto battery power I installed dconf-tools ...
3
votes
5answers
16k views

Battery indicator missing, ubuntu 12.04 [duplicate]

There is a closed , question at Battery Indicator Missing. But I have the problem and have not found any solution yet. Also asked a question about it on Launchpad but no replies again. ...
3
votes
1answer
2k views

Battery Time To Empty Incorrectly Estimated

My laptop battery is getting a old but it still gives me approx one hour [ 1½ hours on Windows]. The problem is that when I disconnect the power cord [or log on without the power cord ], the estimated ...
3
votes
1answer
974 views

Lenovo Y460 won't boot most of the time unless plugged in

My laptop won't boot Natty beta 2 unless it is plugged in most of the time (like 2 out of 3 times). After it is booted I am able to unplug it and let it run on battery power with no problems. ...
2
votes
3answers
8k views

How to reduce the fan noise and how to increase battery life?

I have a brand new Sony Vaio S series laptop.(VPCSA2DGX) It came factory installed with Windows 7 professional Edition 64bit. Runs Intel core i5, 500 GB HDD , 4GB Ram. First I installed ubuntu 11.10 ...
0
votes
1answer
282 views

Disable AMD graphic card to save battery

I just bought a dell inspiron 5537 (which already comes with ubuntu 12) and I removed the ubuntu and installed Ubuntu 14.04 alongside a windows 8.1. After struggling with the system is running low on ...
-1
votes
2answers
305 views

How to write a script to “listen” to battery status and alert me when it's above 60% or below 40%?

I want to make a tool that alerts when battery is below 40% or above 60% so I can start/stop charging accordingly. I know some tools alert when battery is low, that's not enough. Is there a tool ...
8
votes
1answer
10k views

Battery indicator missing in gnome classic

I had upgraded to ubuntu 12.04 from Ubuntu 11.10 and I am also using gnome classic. But the Battery indicator is Missing in the taskbar. So i followed the link ...
5
votes
0answers
2k views

Is there a tweak to show a percentage in the battery icon? [duplicate]

Possible Duplicate: Can I set the power indicator to show battery percentage instead of time remaining? I'm use to not having to click on the battery icon to see what my battery percentage ...
5
votes
2answers
2k views

Battery status not showing

How do I keep the battery status on as to see how much life is left in my battery? I configured this to be on all the time in the power management but it only shows the amount left when I am charging ...
4
votes
2answers
6k views

boot stuck on “checking battery state [ok]”

loaded ubuntu 12.10 but during boot gets stuck at checking battery state [ok]. It appears its some kind of loop where this message keeps repeating. Any idea on how to fix?
1
vote
0answers
173 views

Hibernate dialog apears but doesn't hibernate?

Followed this Question and now whenever I press the button hibernate it just take me to the login screen. For critical battery I wanted it to hibernate on specific battery % and for that I followed ...
1
vote
2answers
8k views

Specific short battery life problem with Sony VAIO laptop

(I'm using Ubuntu 12.04 LTS 64 Bit) I have some problems with my laptop's (Sony VAIO VPC-F22S1E) battery . It's fullly charging about 3-4 hours (while using) and 2-3 hours (when shutdowned) . And ...
1
vote
1answer
964 views

How do I get rid of double battery monitor status? [duplicate]

Possible Duplicate: Two battery indicator symbols, how do I get rid of one? It seems there is a bug that displays an extra battery monitor in Oneiric. From what I found, it is not right in ...
1
vote
1answer
655 views

Battery Indicator Error. D-Bus

So I installed the detailed Battery Indicator that was shown on OMGUbuntu, and it worked fine for a few days. Now, every time I login I get this: I tried to go back to the old indicator, but it ...
0
votes
1answer
725 views

Timed Shutdown - shutdown after 30 minutes [duplicate]

I am running Xubuntu 13.04, I got in the habbit of closing my Acer Netbook and forgetting about it for a week+. I open it up to find it has still been running. How do I set it to shutdown after 15 ...
11
votes
3answers
10k views

Increase screen idle dim timeout

On Ubuntu 11.10, when on battery, the screen dims after 10 seconds of inactivity. This is annoying because it is too short. Is there anyway to increase this timeout? I know I can disable it, but ...
8
votes
2answers
6k views

Do 'Tunables' in 'PowerTop' help on battery life?

I installed PowerTOP 1.97 and i got many Bad in Tunables, I know i can press enter to toggle but does it really change anything? and if it does will it still be changed when i reboot? If i get ...