This is probably going to sound like a rookie question, but I have never ever experienced such issue. I had Ubuntu 11.10 without Unity installed on my old laptop Thinkpad Z60m. Few days ago, I got notification that 12.04 LTS is outside and that I should upgrade. As it is my old laptop, with nothing important on, I decided to go for it. All fine and well. Except, now, Ubuntu behaves like I am not using a laptop. There is no battery indicator and I cannot enable it via Power settings (setting doesn't get stored). Also, power consumption is enormous, so it is now hardly usable running only on battery. Thing is 11.10 worked fine. Also, my battery held up to 3 hours.
So, I guess my question is, is there anything I can do to fix this, or do I need a reinstall?