#12766 HIGH Opportu: XO-1.75 not charging batteries

Zarro Boogs per Child bugtracker at laptop.org
Wed Apr 23 19:34:53 EDT 2014

#12766: XO-1.75 not charging batteries
           Reporter:  Quozl                |       Owner:  Quozl                   
               Type:  task                 |      Status:  new                     
           Priority:  high                 |   Milestone:  Opportunity             
          Component:  embedded controller  |     Version:  Software Build 13.2.0-13
         Resolution:                       |    Keywords:                          
        Next_action:  diagnose             |    Verified:  0                       
Deployment_affected:  ni                   |   Blockedby:                          
           Blocking:                       |  
Changes (by Quozl):

 * cc: dsd at laptop.org (added)


 Three units were further probed with digital multimeter; the first two
 units reproduce #12766, the last unit does not:

  * CHG_LX (PQ66.1 vs PQ67.1), 7.42V, 7.42V, ... 7.42V,
  * across PR185 (PQ66.1 vs PQ61.1), 0.01V, 0.01V, ... 0.01V,
  * across PQ61 (PQ61.1 vs PQ61.8), 1.79V - 1.82V, 0.96V, ... 7.38V.

 The last measurement is unbelievable.  It isn't clear what the state of
 BGATE, LGATE, UGATE, and the battery indicator were at the time.  The
 measurement process will be reviewed.

Ticket URL: <http://dev.laptop.org/ticket/12766#comment:3>
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