upower reports wrong battery info

[Nikke]

Since some time (while running 14.10) I get strange estimates of remaining battery time, and the laptop dies with about 50-60% remaining.
I think the problem is related to the huge difference between energy-full and enegry-full-design (see attached upower.dump). The same numbers are reported by acpi -V.

The battery is a 55Wh (7300mAh) in a Samsung Ativ9 940X3G laptop (productID: AA-PLVN4AR).

I've:
- Tried booting a live-usb with an old ubunut (14.04) with the same result
- Run the "Smart battery calibration" from BIOS with no difference

Thanks,
Niklas

ProblemType: Bug
DistroRelease: Ubuntu 15.04
Package: upower 0.99.2-2
ProcVersionSignature: Ubuntu 3.19.0-20.20-generic 3.19.8
Uname: Linux 3.19.0-20-generic x86_64
ApportVersion: 2.17.2-0ubuntu1.1
Architecture: amd64
CurrentDesktop: Unity
Date: Sun Jun 14 18:34:00 2015
InstallationDate: Installed on 2015-04-24 (51 days ago)
InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422)
SourcePackage: upower
UpgradeStatus: No upgrade log present (probably fresh install)

[Daniel van Vugt (vanvugt)]

Thank you for reporting this bug to Ubuntu.
Ubuntu 15.04 (vivid) reached end-of-life on February 4, 2016.

See this document for currently supported Ubuntu releases:
https://wiki.ubuntu.com/Releases

We appreciate that this bug may be old and you might not be interested in discussing it any more. But if you are then please upgrade to the latest Ubuntu version and re-test. If you then find the bug is still present in the newer Ubuntu version, please add a comment here telling us which new version it is in and change the bug status to Confirmed.