#11793 NORM 12.1.0: Battery light flashes red on 100% charge

Zarro Boogs per Child bugtracker at laptop.org
Tue Apr 30 14:34:22 EDT 2013

#11793: Battery light flashes red on 100% charge
           Reporter:  tonyforster          |       Owner:  pgf          
               Type:  defect               |      Status:  reopened     
           Priority:  normal               |   Milestone:  12.1.0       
          Component:  embedded controller  |     Version:  not specified
         Resolution:                       |    Keywords:               
        Next_action:  never set            |    Verified:  0            
Deployment_affected:                       |   Blockedby:               
           Blocking:                       |  

Comment(by peasthope):

 Replying to [comment:7 rsmith]:
 > Did you do this while the led was flashing?

 No.  Forget the 0 error.  It was after removing and inserting the battery.

 > What state is the battery in when you plug it up?

 Almost fully charged.

 > Please attach your power log(s).
 > Also if you can duplicate this easily then in a terminal please run
 olpc-pwr-log before you do your test and just let it log.  olpc-pwr-log
 records most of the same thing as what is in your power log but it logs
 every 20 seconds.

 The sequence leading to flashing red has a few more steps than described
 originally.  Start the sound application and leave it running.  Unplug
 external power.  Eventually the system shuts down automatically but I have
 yet to witness the automatic shutdown.  Later, when finding the system
 down, plug in external power and restart it.  Then in some cases the red
 light will be flashing.  To stop the flashing red, shut down, cycle the
 battery and start up.  With external power connected the light will change
 from yellow to green after 5-10 minutes.

 [olpc at xo-53-1d-bb ~]$ cat /sys/class/power_supply/olpc-battery/error
 [olpc at xo-53-1d-bb ~]$ olpc-pwr-log
 Checking/waiting for a battery
 Found one.
 Reading eeprom data.
 Starting log pwr-130428-051813-35421314000000c2.csv


 Isn't logging suspended when the screen goes black after an idle time.
 I don't know what to call the state.  Hibernation, suspended,
 quiescent?  Is there a time stamp encoded in the log?

 Wouldn't automatic shutdown before the red light be preferable
 to shutdown after the flashing red has begun?

 Regards,           ... Peter E.

Ticket URL: <http://dev.laptop.org/ticket/11793#comment:9>
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