#10901 BLOC Not Tri: 1.75 A3 fails to boot OFW

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#10901: 1.75 A3 fails to boot OFW
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 Reporter:  wad       |                 Owner:  wad          
     Type:  defect    |                Status:  new          
 Priority:  blocker   |             Milestone:  Not Triaged  
Component:  hardware  |               Version:  not specified
 Keywords:  1.75      |           Next_action:  diagnose     
 Verified:  0         |   Deployment_affected:               
Blockedby:            |              Blocking:               
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 On two occasions now, my 1.75 A3 prototype (#39, fully packaged into a
 laptop) has failed to boot from a cold start.

 It is running OFW Q4A13h, and the EC firmware built by Mitch on 5/19 which
 staggers the SD card turn-ons.

 The first time, the message printed on the screen was:
 "Data Abort", followed by the ok prompt (nothing else was printed).
 The second time, the message printed was "Software Interrupt<cr>ok
 Software Interrupt<cr>ok" (where <cr> is a carriage return).

 In both cases power cycling the laptop resulted in a complete boot.  It is
 impossible to duplicate without letting the laptop sit powered down for
 many minutes.

 One postulate is that this is due to a switching transient on one of the
 power rails, as devices are first turned on by OFW.

 (Can we please get a 1.75-A3 hardware selection added to "Version" ?)

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Ticket URL: <http://dev.laptop.org/ticket/10901>
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