#8010 HIGH 8.2.0 (: joyride-2301: My Battery (status in frame) rarely updates when discharging, then falls off cliff.

[Zarro Boogs per Child]

#8010: joyride-2301:  My Battery (status in frame) rarely updates when
discharging, then falls off cliff.
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   Reporter:  thomaswamm    |       Owner:                                   
       Type:  defect        |      Status:  new                              
   Priority:  high          |   Milestone:  8.2.0 (was Update.2)             
  Component:  not assigned  |     Version:  Development build as of this date
 Resolution:                |    Keywords:  My Battery status blocks?:8.2    
Next_action:  diagnose      |    Verified:  0                                
  Blockedby:                |    Blocking:                                   
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Comment(by rsmith):

 I've had a chance to look at machines with this same problem in the past
 and the the issue has been an incorrect mask setting for the EC SCI mask.
 Sugar's battery monitor is event driven.  The EC has 1% ticks that it
 sends up via an SCI.  During suspend these events are masked.  If they are
 not unmasked properly then the battery status will not update.  The 14%
 low jump is due to the battery empty SCI which causes the system to
 update.

 I've seen that when the mask is incorrect that a suspend/resume cycle will
 generally fix it because the mask is updated in a suspend/resume cycle

 When you saw the bug do you know if your machine had autosuspend enabled?
 Or or put it into suspend by closeing the lid or pressing the power
 button?

 cjb: We should get deepak to add a read mask sysvar so that the mask can
 be checked via userspace.

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Ticket URL: <http://dev.laptop.org/ticket/8010#comment:3>
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