#9430 NORM 1.5-CTe: battery LED flashes red when powered up with full charge

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#9430: battery LED flashes red when powered up with full charge
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           Reporter:  thomaswamm           |       Owner:  rsmith       
               Type:  defect               |      Status:  new          
           Priority:  normal               |   Milestone:  1.5-CTest    
          Component:  embedded controller  |     Version:  not specified
         Resolution:                       |    Keywords:               
        Next_action:  code                 |    Verified:  0            
Deployment_affected:                       |   Blockedby:               
           Blocking:                       |  
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Changes (by rsmith):

  * next_action:  diagnose => code
  * milestone:  Not Triaged => 1.5-CTest


Comment:

 Replying to [comment:2 thomaswamm]:
 > I found some relevant documentation at:
 >
 [http://wiki.laptop.org/go/XO_Troubleshooting_Battery#The_battery_light_is_flashing_red]
 >
 > so I did the full reset (shutdown, removed battery for a few minutes,
 re-installed, powered-up).  The symptom is now gone (battery LED is now
 normal steady dark).  My Battery is at 0:44 remaining (26%).
 >
 > I do not know the cause of the problem, or if it persists, or was a one-
 time transient weirdness.  I will leave this ticket open to see if any
 experts can derive clues from the logs.

 Highly likely it was error 02.

 http://wiki.laptop.org/go/XO_Troubleshooting_Battery#Common_Error_Values

 The error has 2 flavors one thats transient and one that can can get re-
 written back into the battery's EEPROM.  Its a known (to EC folk at least)
 problem and the fix involves a fairly invasive change in the 1-wire code
 that talks to the battery.  Its on the list of stuff to happen for XO 1.5
 and then can get back ported to XO 1.

 > The XO itself knew it had a problem. If this is a common problem, maybe
 a user interface extension is justified to tell the owner what to do.  Or
 maybe the XO should try to fix itself?  I spent a couple hours poking and
 diagnosing, and I needed net access to the Wiki knowledgebase.

 If the problem does not go away with a full reset then it requires
 unlocking the XO and batman.fth to find and correct what value the EC is
 unhappy with or diagnose that the battery is faulty.  So other than
 perhaps making sugar show an error icon for the battery there is very
 little you can do via the UI.

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Ticket URL: <http://dev.laptop.org/ticket/9430#comment:3>
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