Questions about battery usage and issues in Ubuntu.

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146
votes
22answers
169k 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 Ubuntu ...
33
votes
5answers
28k 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 ...
149
votes
16answers
202k views

How to check battery status using terminal?

I would like a command that check the battery status through the terminal
53
votes
6answers
79k 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 ...
34
votes
2answers
15k 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 ...
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 ...
18
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 bug ...
6
votes
5answers
6k 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 ...
12
votes
2answers
9k 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 /proc/...
3
votes
4answers
12k 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
2answers
11k 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 ...
10
votes
2answers
5k 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 ...
6
votes
1answer
994 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 (...
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 in ...
8
votes
3answers
10k 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?
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 ...
5
votes
2answers
2k 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 ...
3
votes
2answers
491 views

How to monitor battery condition and pop-up notification?

Essentially, I would like this comment into a working answer. I know how to extract the battery percentage from How to check battery status using terminal?: upower -i $(upower -e | grep BAT) | ...
1
vote
1answer
147 views

Automatically reduce brightness on battery in Ubuntu 15.10?

How can I automatically reduce brightness when I unplug the AC in Ubuntu 15.10? I tried modifying dconf-editor settings as suggested here, http://askubuntu.com/a/312619/511925, but there are no ...
4
votes
3answers
5k 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 ...
1
vote
2answers
10k 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 it'...
17
votes
3answers
19k views

Battery indicator has disappeared from Gnome panel

I'm using Gnome Flashback (still the best!) on Ubuntu 14.04. In the Indicator app, it used to always show the battery level indicator. Now, it's missing entirely: I've looked in the power settings ...
5
votes
5answers
10k 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 ...
13
votes
7answers
16k 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 ...
12
votes
2answers
8k 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 ...
10
votes
10answers
21k 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 brightness:...
8
votes
4answers
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 ...
6
votes
3answers
29k 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 ...
4
votes
5answers
21k 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. https://answers....
3
votes
2answers
7k 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 ...
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 ...
8
votes
3answers
6k 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 ...
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 ...
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 (dconf-...
2
votes
4answers
5k views

Ubuntu 12.04 Battery problem

I have my laptop ( Dell Inspiron 14R) on dual boot with Ubuntu 12.04 and Windows 7. While using Windows 7, I used to get about 2.5-3 hours on battery fully charged (with my cellphone connected for 3g ...
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 ...
1
vote
1answer
1k views

Lenovo Y560 won't boot unless it's on AC power

I have a Lenovo Y560 and have installed Ubuntu 11.04 (64 bit) via Wubi. When I start the notebook on battery, Ubuntu hangs before the login screen. Any workarounds?
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 (http://askubuntu.com/questions/78979/...
6
votes
2answers
5k 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 ...
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 is, ...
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 ...
1
vote
2answers
734 views

Battery indicator ALWAYS says Using Battery Power - even when plugged in - ASUS laptop

I have an ASUS N550JK laptop (BIOS version 204) running Ubuntu 14.04 (3.13.0-43-generic kernel). My issue is that the battery indicator ALWAYS shows that it's using battery power - even when plugged ...
1
vote
2answers
4k 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 ...
1
vote
1answer
972 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 the ...
0
votes
1answer
1k 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 ...
12
votes
3answers
13k 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 ...
7
votes
4answers
2k views

Suspend when critically low power 11.10

Is there a way to suspend when Ubuntu is at critically low power. The only option in Ubuntu 11.10 power setting is to shutdown or hibernate. I run my battery all the way down till it suspends then i ...
5
votes
2answers
12k views

The battery indicator& Power setting panel shows wrong battery state

My laptop is Thinkpad E420 with Ubuntu 12.04 64-bit installed, the kernel version is 3.2.0-33-generic. I have set the battery threshold as 60% via windows7. It seems that the threshold auto effected ...
3
votes
3answers
1k views

How to play a sound when laptop gets unplugged?

My laptop unplugged stands 1 minute. Previous week my laptop cable, started not connecting good with the laptop. I would like to play a certain sound everytime it gets's unplugged so I can hurry and ...
2
votes
3answers
4k 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 that ...