According to the ACPI, the battery socket is detected, but the battery itself is not. Also, the AC adapter is not detected as plugged in. The problem is solved by modifying the DSDT file. There is a link in the second post on the link provided below. The bug was first reported in launchpad. https://bugs.launchpad.net/ubuntu/+source/linux/+bug/871594
*** This bug has been marked as a duplicate of bug 15707 ***