After upgrading my battery isn't detected, and the indicator doesn't show. Worked fine in 12.04 I added acpi=force to grub didn't help.
closed as off topic by Jorge Castro, Mik, Ringtail, devav2, jokerdino♦ Oct 31 '12 at 6:13
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While upgrading, indicator-power could not be properly configured or installed. You can try to reinstall by giving
code. I also recommend you to install acpi package.
to get proper information from your battery.