OK guys, I want to get in a quick blog before dinner. The “checking battery state” problem seems to affect a large amount of Ubuntu users, usually after an upgrade of some sort. Basically the computer boots fully but gets stuck on “checking battery state”. This happens on both desktops and laptops alike. There is many reports of this problem online (some dating back to around 2008) but few (if any) solutions.
The problem has to do with Xorg and not with some sort of “battery state” issue. I had this problem before and was forced to reformat my machine and was faced with it again last week. The fix is surprisingly simple. Press ctrl+alt+f1 to drop to a shell prompt, and type:
sudo apt-get install gdm