Power Status (was Re: Because LC can't do two things at once.)

Mark Wieder mwieder at ahsoftware.net
Thu Mar 5 11:27:51 EST 2015


Wednesday, March 4, 2015, 5:10:53 AM, you wrote:

>> and what I see on my Thinkpad running linux Mint 17 is status returns one of
>> three states:
>> Unknown if the laptop is plugged into the AC adapter
>> Discharging if running off the battery power
>> Charging if it's (wait for it) charging the battery.

> Please clarify: "Unknown" if using the AC adapter, and "Charging"
> if it's charging the battery. How could you be charging the battery
> if you're not using the AC adapter?

> Is "Unknown" reserved for when you're plugged in and the battery is
> fully charged?

Yes. The battery is in place but neither charging nor discharging. I
do see that the "Unknown" description is ambiguous there.

>> If I remove the battery and run the laptop off AC power there is no BAT0
>> directory.

> OK, so a test for "no such file" is called for.

Yes, there are four possible states. And then I guess in Richard's
case you'd also have to check for BAT1.

-Mark Wieder
 ahsoftware at gmail.com

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