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

Zarro Boogs per Child bugtracker at laptop.org
Thu May 12 13:54:11 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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Comment(by wad):

 I would note that both laptops showing the problem have a VID of 0.750V,
 not 0.728V.

 When I removed PR56 and PR49, and tied PU3.2 to GND and PU3.3 to +3.3V,
 the problem stops happening.   This implies that it is some instability of
 PU3 in switching between the idle Vcore voltage 0.728V and the running
 Vcore voltage.

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Ticket URL: <http://dev.laptop.org/ticket/10858#comment:6>
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