Questions about battery usage and issues in Ubuntu.

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42
votes
6answers
66k 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 ...
1
vote
3answers
5k views

Battery recognized and 100% charged but not working [closed]

I'm stumped. Brand new to Linux, the battery became disabled while I had Vista running on my Lenovo Z61t. It worked fine until Vista demanded I buy another license, I imagine the disabling of the ...
6
votes
1answer
981 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
1answer
2k views

Low-battery-power action without gnome-power-manager

I'm running the openbox WM and would like to avoid loading the gnome stack. One of the lingering issues I have to resolve is avoiding abrupt system crashes due to depleted battery power. Is there a ...
3
votes
3answers
4k views

AMD Radeon HD 4250 - Fan noise and driver choice [duplicate]

I have the Asus Eee-pc 1015T - this is an AMD based netbook and it comes with a great AMD Radeon HD 4250 vga. With Windows 7 it can play 1080p HD video smoothly and during normal usage the average ...
4
votes
1answer
2k views

ext[34] `commit` option and filesystem integrity

I'm running a fairly fresh and vanilla 10.10 install, built from scratch about a month ago on an Acer Aspire 5742 laptop. I use openbox as my window manager and run neither the KDE nor Gnome desktop ...
6
votes
3answers
911 views

laptop-mode-tools and harddrive spinoff

So I wanted to extend my laptop battery life. After googleing a lot I found many tips and tricks. Some even in this site as well. Then I found this package in synaptic as well laptop-mode-tools. Now I ...
10
votes
2answers
2k views

Where are the battery graphs?

Once upon a time, when I went to the battery icon on my netbook, I could get it to show me interesting graphs of the battery state, and how it had changed over time. Nowadays, in this time of decay, ...
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 ...
2
votes
2answers
328 views

Screen Saver Does Not Show When On Battery

I use gnome-screensaver on my system, and it operates near my expectations. One question. Is there a way to get the screensaver to show up when the system is operating on battery power only? Right ...
5
votes
1answer
1k views

My Thinkpad X201 battery is draining extra fast. What can I do?

I got a new Thinkpad X201 last week with the 6 cell battery, which is advertised to work for 5 hours. I installed Ubuntu Maverick on this machine right away. My battery life is only around 2 hours. Is ...
1
vote
1answer
683 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 ...
6
votes
3answers
13k views

Brand new battery is 100% charged but at 0% capacity

I just bought a brand new battery to replace one that had seemingly died. I followed the instructions that came with the battery and charged it overnight, then ran my computer on battery until it was ...
3
votes
1answer
5k views

GNOME Shell Battery Icon missing [closed]

I am just wondering..... Why is there no battery icon? It's hard to work without any battery status around. I am using Maverick, and the GNOME3 files came from git.
2
votes
2answers
2k views

What happened to sched_mc_power_savings

My laptop's battery performance is awful. I can get about an hour and a half out of it, so I've been looking for some ways to boost the power efficiency of my laptop. I saw the tip to enable this: ...
3
votes
1answer
4k views

How to enable the CONFIG_PM_ADVANCED_DEBUG kernel configuration option [duplicate]

Possible Duplicate: What is kernel configuration? I'm trying to save the battery power. For that i'm using powertop and one suggestion is "Enable the CONFIG_PM_ADVANCED_DEBUG kernel ...
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 ...
14
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 ...
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 ...
6
votes
2answers
2k views

How to prevent battery from charging while on UPS

I'm running on UPS power and would like to prevent the laptop's battery from charging, to increase the amount of power available to other devices. Is there a way to do this? update The machine is a ...
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
4answers
2k views

Battery loading state on commandline?

Sometimes the energy status applet on my gnome panel suddenly disappears. Is there a simple command to print loading state of the battery at commandline?
2
votes
0answers
609 views

Workaround for misbehaving Battery Notifier (always estimating) [duplicate]

Possible Duplicate: Laptop's battery is stuck on “estimating”? I know this is a known bug which has been asked before but I hope that until now there might be a fix or ...
2
votes
1answer
1k views

Battery life greatly depreciated in 64-bit when compared to 32-bit

I have a Dell E6400 and have been using Ubuntu on this machine for just over a year. Previously I used 9.10 on 32bit. When I upgraded to use 10.04 I remained on 32bit and battery life seemed just ...
2
votes
2answers
1k views

Is there a way to permanently set the brightness level [duplicate]

Possible Duplicate: How to make GNOME remember brightness setting For the sake of long battery life I decrease my laptop's brightness as soon as I log in but when I reboot the laptop. The ...
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 ...
3
votes
2answers
3k views

Booting ubuntu desktop into command prompt

I use ubuntu desktop 10.10 on a netbook. Quite often I use it as a proxy server (squid3) and file server (samba) for my network. So when I am using it as a network server, is it possible to boot into ...
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 ...
4
votes
1answer
966 views

Laptop works fine with ac adapter, hangs after login screen using battery [closed]

I did an Ubuntu 10.10 Desktop Edition clean install (amd64 version) on a notebook Medion Akoya E1311. With AC adapter everything works fine, but using battery, it hangs after login screen. I can ...
5
votes
2answers
4k 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 ...
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 ...
6
votes
0answers
1k views

Can not estimate remaining battery time? [duplicate]

Possible Duplicate: Laptop's battery is stuck on “estimating”? After updating to Ubuntu 10.10 from 10.04 Ubuntu can not estimate both the battery time and the percentage ...
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
1answer
449 views

Is there a way to force a specific file to exist in RAM only?

I like this suggestion of mounting a tmpfs at /var/log in order to reduce disk writes. Is there any way to do something similar for just a single file such as ~/.xsession-errors? My incentive for ...
4
votes
2answers
2k views

mouse stuck after resumption from suspend

I'm using Ubuntu 10.04 on a Gateway TA1 convertable tablet PC. After I suspend by closing the lid, and resume by reopening the lid, I cannot use my trackpad mouse anymore. How can I fix this? ...
13
votes
6answers
15k 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 ...
142
votes
22answers
145k 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 ...
4
votes
3answers
2k views

Netbook Edition battery life - Ubuntu vs. Kubuntu?

I've been running UNR on my eee 1000 pretty much since it came out over a year ago (I was using easy-peasy before that), but I'm curious about the new Kubuntu netbook edition. Ultimately, KDE is ...