Laptop drains of quickly with battery
- by Shyam
I am a user since years in ubuntu and I have not come across this problem with ubuntu till date.
My battery drains off immediately after I unplug my AC power.
The options I tried:
1) checked the battery state with : cat /proc/acpi/battery/BAT0/state
present: yes
capacity state: ok
charging state: charged
present rate: 0 mA
remaining capacity: 392 mAh
present voltage: 12476 mV
Initially it was showing charging state: charging after 5mins it started displaying as charged. ! Based on that if I remove my AC Power it shows low battery notification.
2) When I run acpi : acpi -b
Battery 0: Unknown, 9%
The battery state shows as unknown. But initially when we plug-in to AC adapter
acpi -b
Battery 0: Charging, 9%, 13:04:00 until charged
3) When the check the same with :
upower -i /org/freedesktop/UPower/devices/battery_BAT0
native-path: /sys/devices/LNXSYSTM:00/device:00/PNP0A08:00/device:02/PNP0C09:00/PNP0C0A:00/power_supply/BAT0
vendor: HP
power supply: yes
updated: Thu Nov 1 16:06:40 2012 (20 seconds ago)
has history: yes
has statistics: yes
battery
present: yes
rechargeable: yes
state: charging
energy: 4.2336 Wh
energy-empty: 0 Wh
energy-full: 33.1128 Wh
energy-full-design: 33.1128 Wh
energy-rate: 5.6052 W
voltage: 12.474 V
time to full: 5.2 hours
percentage: 12.7854%
capacity: 100%
technology: lithium-ion
Is the power stats output, It says 5hrs to charge completely, If I charge it even more than 5hrs and unplug the AC power, It again cribs stating LOW BATTERY !!
The same thing does not happen with Windows7.
Any suggestions/ help will be greatly appreciated.