#12738 NORM Future : XO-4 battery capacity test: shutdown after discharge

Zarro Boogs per Child bugtracker at laptop.org
Thu Aug 22 13:23:57 EDT 2013


#12738: XO-4 battery capacity test:  shutdown after discharge
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           Reporter:  pgf           |       Owner:  pgf                               
               Type:  defect        |      Status:  new                               
           Priority:  normal        |   Milestone:  Future Release                    
          Component:  not assigned  |     Version:  Development source as of this date
         Resolution:                |    Keywords:                                    
        Next_action:  reproduce     |    Verified:  0                                 
Deployment_affected:                |   Blockedby:                                    
           Blocking:                |  
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Comment(by rsmith):

 Replying to [ticket:12738 pgf]:

 > Looking at the logs I have a theory.  The laptop is getting shutdown
 > before the test would normally stop.  The test is set to stop at a
 > battery voltage of 5.2V but none of the test runs get that low. Most of
 > them stop at close to 6.0V with an SOC of 1%.

 My theory has hole.  I realized today that 0% never happens.  The battery
 system on XO-4 only marks the battery as 0% _after_ the critical shutdown
 voltage is reached (which powers off the laptop). powerd won't ever see a
 0%.

 The problem also seems intermittent since the last set of logs sent from
 quanta appear normal modulo things that can be attributed to file copy
 problems (1 missing file).

-- 
Ticket URL: <http://dev.laptop.org/ticket/12738#comment:2>
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