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.launchpad.net/ubuntu/+question/197436
I updated the kernel from 3.2 to 3.4 precise. I have ubuntu 12.04, on 64 bit machine, dell E6400.
chawla@chawla-laptop:~$ sudo apt-get install indicator-power Reading package lists... Done Building dependency tree Reading state information... Done indicator-power is already the newest version. 0 upgraded, 0 newly installed, 0 to remove and 71 not upgraded.
but nothing works, anyone have the idea about it?