Battery stastics information are incorrect

[Steve Online]

Asus UX21A laptop. Ubuntu 14.10. Gnome Flashback.

Note that I can boot the same computer in Windows 7, and power information seems accurate and predictable, leading me to believe the problem is with Ubuntu.

Symptom 1: Power cord has an indicator light that is green when battery is fully charged, and orange when still charging. When using Ubuntu, the power indicator on the cord will be green, indicating full charge, but the power indicator in the Gnome interface reports significant charging times. For example, even though the power cable indicator is green for fully charged, Ubuntu will say the battery is at 75% charge and forty minutes to complete charging.

Symptom 2: Computer powers off suddenly, without any indicator warnings. I watch the power statistics, and it will indicate 50% of charge left, but suddenly the power will go off. I will reboot, and immediately after logging into Ubuntu, the power indicator in the gnome panel is red, indicates less than 4% power, and takes action to power off the machine.

In short, the power indicators within Ubuntu seem to be inconsistent with what the actual charge of the battery is.

I have seen this problem reported in other bugs, but I opted to open a new bug because all bug reports I saw were from previous versions of Ubuntu, 13.10 and prior, had claimed in most cases to be fixed, or were several years out of date.

I hope this can be resolved. Please let me know if there is any further information I can provide.

Other information:

$ lsb_release -rd
Description: Ubuntu 14.10
Release: 14.10

$ apt-cache policy gnome-power-manager
gnome-power-manager:
  Installed: 3.8.2-1ubuntu2
  Candidate: 3.8.2-1ubuntu2
  Version table:
 *** 3.8.2-1ubuntu2 0
        500 http://ubuntutym.u-toyama.ac.jp/ubuntu/ utopic/main amd64 Packages
        100 /var/lib/dpkg/status