Constant switching of battery status

Message

teefax · Post by **teefax** » Mon Mar 06, 2017 10:05 pm

Hello,

I'm having an issue with the battery status on my ThinkPad L430. If I'm disconnecting the power supply cord and then wait a few minutes until the battery level dropped to <90% and then reconnect the power supply, the status of the battery switches to "charging". So far, everything is fine. But as soon as the battery reaches 100% the status of the battery is constantly (every ~ 2 seconds) switching between "charged" and "charging".

This leads to constant switching of the energy savings profile in XFCE and a series of extraordinarily annoying notifications.

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~ > cat /proc/acpi/battery/BAT0/state
present:                 yes
capacity state:          ok
charging state:          charging
present rate:            7065 mW
remaining capacity:      36640 mWh
present voltage:         12266 mV
~ > cat /proc/acpi/battery/BAT0/state
present:                 yes
capacity state:          ok
charging state:          charged
present rate:            0 mW
remaining capacity:      36650 mWh
present voltage:         12513 mV

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~ > acpi_listen 
battery PNP0C0A:00 00000080 00000001
battery PNP0C0A:00 00000080 00000001
battery PNP0C0A:00 00000080 00000001
battery PNP0C0A:00 00000080 00000001

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~ > upower -m 
Monitoring activity from the power daemon. Press Ctrl+C to cancel.
[22:58:03.518]  device changed:     /org/freedesktop/UPower/devices/battery_BAT0
[22:58:04.118]  device changed:     /org/freedesktop/UPower/devices/battery_BAT0
[22:58:05.517]  device changed:     /org/freedesktop/UPower/devices/battery_BAT0
[22:58:05.517]  device changed:     /org/freedesktop/UPower/devices/battery_BAT0
[22:58:05.517]  device changed:     /org/freedesktop/UPower/devices/battery_BAT0
[22:58:05.517]  device changed:     /org/freedesktop/UPower/devices/battery_BAT0
[22:58:05.517]  device changed:     /org/freedesktop/UPower/devices/battery_BAT0
[22:58:05.517]  device changed:     /org/freedesktop/UPower/devices/battery_BAT0
[22:58:19.854]  device changed:     /org/freedesktop/UPower/devices/battery_BAT0
[22:58:19.854]  device changed:     /org/freedesktop/UPower/devices/battery_BAT0
[22:58:19.854]  device changed:     /org/freedesktop/UPower/devices/battery_BAT0
[22:58:19.854]  device changed:     /org/freedesktop/UPower/devices/battery_BAT0
[22:58:19.854]  device changed:     /org/freedesktop/UPower/devices/battery_BAT0
[22:58:19.854]  device changed:     /org/freedesktop/UPower/devices/battery_BAT0
[22:58:19.854]  device changed:     /org/freedesktop/UPower/devices/battery_BAT0
[22:58:21.519]  device changed:     /org/freedesktop/UPower/devices/battery_BAT0
[22:58:21.519]  device changed:     /org/freedesktop/UPower/devices/battery_BAT0
[22:58:23.518]  device changed:     /org/freedesktop/UPower/devices/battery_BAT0

Any idea on what could cause this? I've tried with the 4.10, 4.9 and 4.4 kernel series and got the same results.

saturnalia0 · Post by **saturnalia0** » Mon Mar 06, 2017 10:30 pm

Perhaps that's what is actually going on? It's probably easier to tune your notifications/energy profiles configs accordingly.

As a side note, with my Thinkpad it goes up to 100% with "charging", switches to "full", and eventually it stays at 90 something % with status "Unknown". The only thing that actually bothers me is that /sys/class/power_supply/BAT0 eventually has files named "charge_*" but other times it's "energy_*". I didn't try to reproduce it but it seems to change between suspends/shutdowns.

teefax · Post by **teefax** » Mon Mar 06, 2017 10:39 pm

Yeah, it just seems weird because this started a few weeks ago; until then the battery stopped charging at 100% and only started again at ~90%.
I now was able to change the charging thresholds using app-laptop/tpacpi-bat, that seems to solve that problem for me.