#10858 BLOC Not Tri: Rev L motherboard on XO 1.5 hangs

Zarro Boogs per Child bugtracker at laptop.org
Tue May 10 19:44:43 EDT 2011


#10858: Rev L motherboard on XO 1.5 hangs
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           Reporter:  saadia        |       Owner:  wad          
               Type:  defect        |      Status:  assigned     
           Priority:  blocker       |   Milestone:  Not Triaged  
          Component:  not assigned  |     Version:  not specified
         Resolution:                |    Keywords:  1.5          
        Next_action:  diagnose      |    Verified:  0            
Deployment_affected:                |   Blockedby:               
           Blocking:                |  
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Changes (by wad):

  * status:  new => assigned


Comment:

 Saadia reported that this problem only occurred when running from battery,
 not an adapter.

 When the CPU freezes and VCORE rises, there is no change to CPURST# or
 CPUPWRGD.
 A scope trace showing the CPUSTP# toggling and then VCORE rising when the
 CPU freezes is available at: http://dev.laptop.org/~wad/10858.png  In that
 trace, yellow is VCORE, blue is VRDSLP, and magenta is CPUSTP#.

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Ticket URL: <http://dev.laptop.org/ticket/10858#comment:4>
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