Laptop battery icon not updating

I recently upgraded from 10.04 to 12.04 Precise (first point release) on my laptop (an MSI machine).

I've resolved several minor issues but can't figure one out and have searched here and on google to no avail (hope I didn't miss a post somewhere).

For example, my battery is low at 15%, however, the icon indicates its at 79%, which was the percentage when I first booted into the OS.

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Please read the entire post & the comments first, create a System Restore Point before making any changes to your system & be careful about any 3rd-party offers while installing freeware.

The battery icon on the panel only changes when I restart or log-out then log back in.

It may show battery power for 3 hours remaining, but drains within 2 hours of use. It is a minor irritant and temporary in nature and sure to go away when you restart your laptop. You can also create a laptop battery full charge notification.

The accuracy of what the battery meter reports and what percentage of a full charge remains and how long you can use your laptop before you must plug it in, depends on several factors. Anand Khanse is the Admin of The Windows, a 10-year Microsoft MVP Awardee in Windows (2006-16) & a Windows Insider MVP.

Before we begin configuration on the OS, it’s recommended to have a check on the battery-related hardware and make sure there’s no problem with the device just in case you waste time on other useless computer operations. Right-click the Microsoft AC Adapter and select Uninstall device.5.