Questions about battery usage and issues in Ubuntu.

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4
votes
2answers
4k views

Change screen brightness automatically on AC connection/disconnection

I want to keep the screen brightness at minimum level when its unconnected to power and at maximum level when it's connected On Ubuntu 11.04 it was possible, through this config screen: However on ...
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 ...
1
vote
1answer
1k views

battery backup issues on acer timeline 3830tg

I recently bought Acer timeline 3830tg for my studies and installed ubuntu 11.10 and currently using gnome-shell. I also have changed by graphics mode from hybrid to integrated mode to increase ...
1
vote
2answers
1k views

How do I fix the problems I'm having with Xfce and Xubuntu?

I booted into a Xubuntu session and when the splash disappeared it left behind artifacts on the desktop. I went into Desktop to change the background but it stayed completely gray. Not only that, ...
3
votes
2answers
2k views

My Laptop Battery Does Not Charge

I am using a HP Pavilion and Ubuntu 11.10. I have been using Ubuntu for about a year. Recently (in Nov or there about), I noticed my battery never charges fully no matter how long it has been ...
0
votes
1answer
389 views

Reduced computer performance when AC power is plugged in on a Dell Latitude 5420

i have Dell Latitude 5420 laptop and yesterday i have istalled 11.10 Ubuntu. All instalation process was done on battery power, so there was no problem on performance. Today i have plugged in my ...
0
votes
2answers
1k views

How can I improve battery life on an Eeepc 1015 PEM? [duplicate]

Possible Duplicate: Tips to extend battery life for laptops and notebooks I own an Asus Eee PC 1015 PEM. I've decided to fully shift to Ubuntu, I've been using it on other systems since the ...
4
votes
1answer
935 views

Why is Ubuntu so power-inefficient? [duplicate]

Possible Duplicate: Battery drain on ubuntu is fast I'm currently getting 7–8 hours of battery life whilst using Windows, but I only get about 3 hours in Ubuntu? Why the big gap? Some ...
2
votes
0answers
293 views

Show battery as percentage, not time? [duplicate]

Possible Duplicate: Is there a tweak to show a percentage in the battery icon? I just recently installed Ubuntu 11.10 (I've used older versions, but I'm still a noob), and (almost) everything ...
4
votes
1answer
2k views

How can I make the battery icon appear in my gnome-3 panel only when charging or discharging?

I am using ubuntu 11.10. There was an option for the same in 11.04. I found a suggestion listed here. Unfortunately, it does'nt work. $ GSETTINGS_BACKEND=dconf gsettings set org.gnome.power-...
2
votes
0answers
746 views

Fast battery consumption on Samsung PABAS024 [closed]

I have a Lenovo 3000 N100 and my battery gets low real fast (sorry for bad English) i read somewhere to execute cat /proc/acpi/battery/BAT1/info and check out design and last full capacity if they ...
1
vote
0answers
379 views

Battery Monitor Not Showing on boot up of Ubuntu 11.10 [duplicate]

Possible Duplicate: No battery status icon When I boot up Ubuntu 11.10, my battery monitor does not show up, it only does when the battery is low, or I plug in my power cord. I want it to come ...
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 ...
0
votes
0answers
128 views

Battery monitor only showing up on laptop when power cord is plugged in [duplicate]

Possible Duplicate: Battery status not showing My battery monitor is only showing up on laptop when power cord is plugged in. I have tried this answer here but no luck, it always says that the ...
2
votes
1answer
380 views

Giant battery consumption with dual graphics solution (only i-gpu working)

I use a Laptop with Intel Core i7 SandyBridge and integrated Intel HD3000 graphics as well as a Nvidia Geforce GTS 555M. So far, I got the impression my Laptop was running with the Nvidia graphics ...
8
votes
3answers
2k views

System shows “Battery Critically low”

I am using Ubuntu 11.10 on VAIO . Whenever I unplug the charger from my laptop, there comes a dialog showing "battery critically low" and system suspends, even when the charge is 100%.
0
votes
1answer
416 views

Battery life is getting shorter and it longer to charge

Just installed Ubuntu on my laptop. What is weird is that my battery life has become shorter, and when I try to charge it, it said that my battery will be full in 8:30 hrs. While on my Windows, it ...
3
votes
2answers
2k views

Performance while on battery - Ubuntu 11.10

First time on battery after installing Ubuntu 11.10. What I immediately notice is poor graphics performance and overall poor system responsiveness. If I plug in the power chord, it's all good. I am ...
2
votes
2answers
2k views

Acer Timeline X 3830TG Battery life

i'm running ubuntu 11.10 and i'm interested in getting more life out of my battery, I see a lot of people adding extra lines to their /etc/default/grub file after "quiet splash". For instance one ...
2
votes
2answers
1k views

Reduced battery life in my netbook

I notice my battery is getting empty quickly while using Ubuntu 11.10. When I am using Windows 7 with the same power settings and usage, I get a back up of around 3 hours whereas in Ubuntu it is half. ...
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 ...
0
votes
1answer
137 views

Hibernating even though I plugged in the power cord

I have this problem where if my battery runs low Ubuntu shows a dialog warning me the computer will soon hibernate, and if I close the lid and then plug it and open the lid to resume my work, Ubuntu ...
0
votes
1answer
410 views

Gnome Shell - Battery only charges to about 90-91%

In Gnome Shell, I am charging my battery but it won't go past 91% at the most. It sometimes gets stuck at 90 as well. Its very annoying and I want to know if there is a fix for this...
2
votes
3answers
3k views

Lubuntu battery monitor always says 100%

While using lubuntu-desktop I added the battery-monitor to the panel. It seems to be essentially useless as the only information I get from it is whether the power cable is plugged in or not because ...
1
vote
1answer
2k views

My battery is not charging after power outage

I just emerged from 6 days power outage and now my MSI U100 is not charging the battery. Clicking on the battery indicator says 0% in spite of having been plugged in for 30+ minutes. If I unplug it, ...
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 ...
2
votes
1answer
2k views

How to keep a bright screen with battery power? [duplicate]

Possible Duplicate: Always be 100% bright when I'm using battery It would seem that one would go to the power settings, and adjust the amount of time before the screen becomes dim, but ...
4
votes
1answer
3k 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
3k views

Laptop battery not charging after update? [closed]

It shows I have 30 minutes left. The update involved kernels. I just don't know. I don't know if I'll have power or not in a half hour. Is there any way to roll back changes. What to do?
2
votes
2answers
498 views

2000+ processor wake ups..?

I have dell xps 15 with nvidia 525 with optimus. I use ironhide for optimus support. Under normal conditions I can see 2000+ processor wake ups. As a result of which my battery dries up rapidly. In ...
2
votes
3answers
1k views

Powertop is reporting 0 wakeups/second - can this be right? [closed]

I'm investigating tweaking my power consumption performance on Ubuntu. When I run Powertop, the output seems strange, and not much like any of the screenshots I see on the web. That might be ...
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 ...
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, ...
1
vote
1answer
222 views

How to set Fn+F2 to show battery's status throug OSD and not power statistics?

In natty pressing Fn+F2 on my Samsung NC10 opened a new notification with the remaining battery power. After upgrading to Oneiric, it opens the power statistics. Is the a way to revert this change? ...
2
votes
2answers
687 views

Is there a specific way to extend battery life in a Toshiba netbook?

I'm using Lubuntu 11.10 on a Toshiba NB-500. The new Kernel 3.0 partially solved some issues related with overheating and absence/or/unstable wi-fi connection. But I see no improvements in power ...
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
2
votes
0answers
276 views

Too many battery-indicators in gnome-shell [closed]

For some reason I get more than one battery indicator in my panel. This has the unfortunate side-effect that my PC closes down (only one of them is correct, the rest has 0% battery left).
0
votes
1answer
528 views

How can I tell if I'm affected by “The 11.10 Battery Power Drain”?

I've seen hints at some kernel power bug affecting battery life if updating to 11.10 -- as for example here. I relation to this, I have three questions: How can I tell if my machine is affected ...
2
votes
0answers
357 views

Despite running without problems, my battery indicator says “(not present)” still - what can I do about this? [duplicate]

Possible Duplicate: How to get the correct battery status? Every time I restart me computer I have to go into system settings to turn the brightness on my screen back up to full and the ...
5
votes
3answers
2k views

How can I see more battery info when using Gnome shell?

I've been using Gnome Shell on Ubuntu 11.10 and I've been fairly satisfied. One thing that I really wish was different though is the battery icon. I can't tell by glancing at it what my battery ...
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
2answers
2k views

Why does my laptop think my battery is dead?

I've got about a 3 or 4 hour battery life on my laptop. I've had Ubuntu 11.04 on it for a week or so now, and yesterday, it started telling my I had a critically low battery (.3%), and suspends. When ...
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 ...
7
votes
1answer
2k views

How to check charged percentage of battery and to adjust its thresholds?

I was wondering how to check the current charged percentage of battery on my Lenovo T400? I forgot which program I used to control the battery to stop charging at 60% and start charging at 40%. Now I ...
4
votes
3answers
690 views

ACPI 30k+ interrupts per second

My computer is currently doing something like 30k+ interrupts per second. This causes battery issues as well as the CPU being always stuck at the highest speed, making it very hot (overheating.. 75C ...
6
votes
3answers
2k views

how can I run my script automatically on ac switching

So, I wan't to run it when start work on AC and this or better other script when start work from battery I tried /etc/acpi/power.sh adding symlink to /etc/laptop-mode/battery-start It seems to ...
7
votes
2answers
804 views

How can I increase time of working from my battery?

Usually I am not even able to watch film from start to end. I use Acer Aspire 5930 OS is Ubuntu 11.04 I use Classic Ubuntu desktop (AFAIK it really means GNOME2) I know, that: I can decrease ...
2
votes
1answer
552 views

Battery starts discharging after charge

In Ubuntu 10.10 and 11.04 my Dell mini 9 starts to discharge and run off of battery very soon after it is fully charged while it's still plugged into the the power adapter. If I restart it still doesn'...
4
votes
2answers
3k views

Is there any way to check the battery percentage of Apple wireless peripherals?

I have an Apple Wireless Keyboard and a Magic Trackpad, and I was wondering if there is a way to monitor the battery life remaining/percentage like there is in OSX.
1
vote
0answers
229 views

Laptop Battery message estimating forever or appears twice [duplicate]

Possible Duplicate: Battery indicator is stuck on “estimating”? My Dell stays at estimating forever and sometimes appears twice mentioning the same problem!. It does not change to ...