Laptop Battery problem

Posted by sudhin on Ask Ubuntu See other posts from Ask Ubuntu or by sudhin
Published on 2012-06-16T10:51:01Z Indexed on 2012/06/17 3:24 UTC
Read the original article Hit count: 365

Filed under:

12.04

|

battery

|

compaq

My Compaq Presario CQ42 laptop battery is not working well with Ubuntu 12.04. But there is no problem in Ubuntu 10.04. Sometimes it shows percentage, sometimes remaining time, but charge reduces suddenly if I close the lid.

The battery's charge reduces as follows:

100% charged battery after two minutes shows 1hr:30min remaining
then after 2 minutes time remaining is 1hr:24min
after 10mins if i just close lid and opened then shows 64% remaining .....

How can I solve this problem?

© Ask Ubuntu or respective owner

Related posts about 12.04

Wipe 12.04/Windows 7 dual boot setup and start fresh new 12.04

as seen on Ask Ubuntu - Search for 'Ask Ubuntu'
I have an Asus u56e laptop running dual boot setup, Windows 7 and 12.04. I had Windows 7 first. I was wondering what's the easiest way possible to erase/format my drive (500GB) so that it deletes Ubuntu and Windows 7 so I can reinstall 12.04 onto my whole drive? Does the Ubuntu Live CD help make this… >>> More
In 12.04: Failed to load session 'ubuntu' [closed]

as seen on Ask Ubuntu - Search for 'Ask Ubuntu'
Possible Duplicate: There's an issue with an Alpha/Beta Release of Ubuntu, what should I do? I'm using 12.04 beta. Today I was prompted to install some updates, which I did, followed by a reboot. On reboot, X starts, but all I see is a single dialog window in the middle of the screen… >>> More
Will final version of 12.04 use the power management changes found in kernel 3.3

as seen on Ask Ubuntu - Search for 'Ask Ubuntu'
I have seen in some version of Ubuntu that instead of making a huge change to update to the latest kernel, they take some of the good stuff out of it, for the sake of stability and put it on a previous version. In this case, kernel 3.3 has seen some very good power management enhancements that are… >>> More
Wired PS/2 Keyboard and Mouse do not work in 12.04 Live CD or after fresh 12.04 install - Foxconn D270S Atom Motherboard

as seen on Ask Ubuntu - Search for 'Ask Ubuntu'
My Wired PS/2 keyboard and mouse do not work in 12.04, either in a fresh install or from the Live CD. A USB keyboard and mouse will work. The PS/2 keyboard and mouse will work using the same hardware and a fresh 10.04 Ubuntu install or a fresh Windows 7 install. The motherboard is a Foxconn D270S… >>> More
Difference between 12.04 and 12.04.1

as seen on Ask Ubuntu - Search for 'Ask Ubuntu'
I recently did a fresh install of Ubuntu 12.04 two days ago. Or at least I thought it was 12.04, but actually 12.04.1. Now I'm having errors popping up from the grub loader. Error: no video mode activated which was apparently resolved in this bug# 699802. However these workarounds are for 11.xx… >>> More

Related posts about battery

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

as seen on Ask Ubuntu - Search for 'Ask Ubuntu'
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 windows 7 on the same computer. Windows 7 gives a good few hours on a full charge indicating that it… >>> More
Ubuntu 12.10 is reading mouse battery as a laptop battery

as seen on Ask Ubuntu - Search for 'Ask Ubuntu'
I have a bluetooth mouse connected to my laptop. Much to my delight (I posted the suggestion!) the mouses battery is now displayed along side the laptop's battery. Unfortunately is is named simply "battery" in the drop down and "Laptop battery" once the power statistics windows is opened. The details… >>> More
The battery indicator& Power setting panel shows wrong battery state

as seen on Ask Ubuntu - Search for 'Ask Ubuntu'
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 in Ubuntu. However, there are some problems of the battery indicator's state. I'll list some information… >>> More
To have a long life with the battery it has to be separated from the Laptop after each use

as seen on Ask Ubuntu - Search for 'Ask Ubuntu'
To have a long life with the battery it has to be separated from the Laptop after each use Developing a Laptop and concern about it's battery life Don't be concerned follow this advice how to deal with your Laptop battery. A fresh power supply of your Laptop can be purchased in a very low charge… >>> More
How to Calibrate HP Laptop Battery

as seen on Ask Ubuntu - Search for 'Ask Ubuntu'
Calibrating the HP Laptop Battery This document pertains to HP Notebook PCs with Windows 7 and Vista. Calibrating the laptop battery Calibrating the battery means recharging the battery to its maximum capacity and resetting the battery gauge to display the level of charge accurately. The Windows… >>> More