Ubuntu – 14.10: Battery indicator stuck on 64%

batteryindicatorpower-management

Yesterday I saw that when I plugged my laptop the battery indicator still showed me that I was on battery life instead of direct power. The percentage was 65% and after a few hours on power the percentage stucks on 65%.

When I unplug and replug the power the battery indicator is not changing. It never gets to 100% and never goes down if I stay on power.

Any ideas how to resolve this issue?

Some information:

Linux mva-laptop 3.16.0-31-generic #43-Ubuntu SMP Tue Mar 10 17:37:36 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux

Distributor ID: Ubuntu
Description:    Ubuntu 14.10
Release:    14.10
Codename:   utopic

description: Notebook
product: N56JN (ASUS-NotebookSKU)
vendor: ASUSTeK COMPUTER INC.
version: 1.0

EDIT 1

I have followed the instruction given in the comments and this is the output of upower command:

  native-path:          BAT0
  vendor:               ASUSTeK
  model:                N56--52
  power supply:         yes
  updated:              wo 18 mrt 2015 22:26:26 CET (10 seconds ago)
  has history:          yes
  has statistics:       yes
  battery
    present:             yes
    rechargeable:        yes
    state:               discharging
    energy:              52,968 Wh
    energy-empty:        0 Wh
    energy-full:         54,21 Wh
    energy-full-design:  56,628 Wh
    energy-rate:         0 W
    voltage:             10,89 V
    percentage:          97%
    capacity:            95,73%
    technology:          lithium-ion

EDIT 2
I just discovered that when I connect my Bluetooth mouse The percentage is dropping to 64%. Which still feels odd, because these are the statistics of the Bluetooth mouse. The statistics of my laptop battery aren't changed.

  native-path:          hid-6c:5d:63:29:b2:7f-battery
  model:                Rapoo 6610
  power supply:         no
  updated:              vr 20 mrt 2015 08:27:41 CET (4 seconds ago)
  has history:          yes
  has statistics:       yes
  battery
    present:             yes
    rechargeable:        yes
    state:               discharging
    energy:              0 Wh
    energy-empty:        0 Wh
    energy-full:         0 Wh
    energy-full-design:  0 Wh
    energy-rate:         0 W
    percentage:          30%
    capacity:            100%

If I understand it correctly it seems that my Bluetooth mouse has 30% battery left. And my laptop battery has 97% left. So why is it displaying 64%? And why is it saying my laptop is discharging when I have the power adapter plugged in?

Best Answer

Try the following: 

upower --enumerate

...and detect the battery canonical name. After that, you can issue: 

upower -i /org/freedesktop/UPower/devices/battery_BAT0

(change with your name). This will give you the full statistics of the battery. If it's old, you can have a maximum capacity different form 100%: 

energy-full:            44.69 Wh
energy-full-design:     47.52 Wh

...and that means that the battery is "old" and had loose (in my case about a 10%) part of its capacity. If the battery is three-four years old, losing a 35% could be a normal thing.

EDIT: Given the new data on the question, this seems a bug of the power indicator; it is averaging the battery of your bluetooth and the main one. You can check http://bugs.launchpad.net/ubuntu/+source/indicator-power to see if you find it, or posting a new one; but it is probably related to https://bugs.launchpad.net/ubuntu/+source/indicator-power/+bug/850728.

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