I'm on an Thinkpad x220, Ubuntu 12.10, kernel 220.127.116.11, recently updated BIOS (1.37) : today out of nowhere, my computer shuts down immediately when I unplug it, even though the battery is present, recognized and charged.
It won't go beyond 66% charged though. In power statistics, the battery is recognized as having a 37.2wh charge and as being healthy. The 'time to full value' however, is 0.
Power statistics: Device: battery_BATO Technology: Lithium Ion Vendor: LGC Model: 42T4865 Serial number: 10189 Present: yes Rechargeable: yes State: charging Voltage: 11.9 V Energy: 37.2 Wh Energy (design) 62.2 Wh Percentage: 66.2% Capacity: 90.4% Time to full: 0 seconds Time to empty: 0 seconds
I have tried unplugging the battery, reboot, replugging the battery, reboot as described in the answer here:
and I have tried adjusting the settings of dconf Editor (In org > gnome > settings-daemon > plugins > power I changed the value of critical-battery-action to nothing. I have also unchecked the option notify-perhaps-recall), as described here:
tp_smapi, as described here: when opening
/sys/devices/platform/smapi/BAT0 (there is also a folder for
BAT1), I saw that the threshold for stopping charging was 100. When opening
start_charge_thresh , I am unable to open the file. In terminal I get this error:
(gedit:3617): WARNING **: Hit unhandled case 0 (Error reading from file: No such device or address) in parse_error.
all to no avail, unfortunately.
Is this a broken battery? Or something else? How can I find out?
UPDATE: the battery no longer shows in the system tray. I can however still find its specs and status with: upower -i /org/freedesktop/UPower/devices/battery_BAT0